BHIⅠ. INTRODUCTION BHI HydroRam Hydraulic Hammer, designed and built to provide durable operation under any working conditions, has been developed by BHI's excellent engineers with accumulated technology and experiences for many years. Job applications are as below. This Manual contains safety, operation and routine maintenance instruction. It does not contain disassembly for service. Do not operate the hammer unless the following safety instructions have been thoroughly read and understood. Read this Manual before installing, operating or maintaining the equipment. Construction sites: Concrete demolition, General construction, Rock breaking including trenching. Mines & quarries: Primary breaking and secondary breaking Ⅱ. SAFETY PRECAUTION Please familiarize yourself with the operating instructions and appropriate regulations before starting to work with the hydraulic hammer. Safety notices in Operation Manual follow ISO and ANSI standard for safety warning. Notices indicate an imminently hazardous situation which, if not avoided, will result in death or serious injury. Notices indicate a portentially hazardous situation which, if not avoided, could result in death or serious injury. Notices indicate a portentially hazardous situation, which, if not avoided, may result in minor or moderate injury. notices in BHI Operaton Manuals are an BHI standard to alert the reader to situations which, if not avoided, could result in the equipment damage. WARNING and BASIC OPERATION INSTRUCTIONS decals are included with each BHI hammer and operation kit. Decals must be installed on the hammer bracket. BHI 1. Safety Decals Sticker Description Instruction 1 Head protection wearing, ear Use hearing protection 2 Operation Manual Service Manual Read the manual before use 3 Warn a danger nearby job sites. Keep away the breaking area while the hammer works 4 Grease Injection Inject grease 5 Caution Gas Pressurized Container 6 Lifting Holder Position HydroRam 4) Keep linkage and pin holes clear when installing the hydraulic hammer. HydroRam . 7) The hydraulic system to the carrier must be checked by the authorized service engineer before first operation and after any modifications. If the carrier is too light. check the pressure and oil capacity. the relief valve on the hydraulic system.efficiency of the pump. Make sure that pressure of the hydraulic hammer. Do not touch any parts when the boom is moving. it may become unstable and fall over. 3) The hydraulic hammer should be installed to the carrier with sufficient load capacity. which secures high pressurized It must have been approved by the relevant authority.BHI 2. 6) Operation of the hydraulic hammer requires the installation of hydraulic pipe lines exclusive use of the hydraulic hammer. Model Unit HK10 HK20 HK30 HK40 HK45 HK60 Check accumulator. i. 2) Only lifting equipment like crane should be used for transporting the hydraulic hammer. Installation of Hammer 1) When installing the hydraulic hammer. must be understood and agreed on beforehand. etc. to the maximum permissible operating HK80 Relief 2 Setting Kg/cm [psi] Pressure 150[2133] 150[2133] 150[2133] 150[2133] 150[2133] 170[2420] 190[2700] HK130 HK220 HK250 HK280 HK330 HK380 HK500 180[2560] 210[2985] 210[2985] 210[2985] 210[2895] 210[2895] 210[2985] * The above Relief Setting Pressures are subject to change . 5) Collect any oil which leaks out and dispose of it correctly. Never use your fingers to check the alignment of the linkage. the pressure of relief valve has been set correctly. an assistant is required who must be instructed by the carrier operator. for 8) After installation of hydraulic pipe lines.e. All directions and signals. BHI 9) Check the connections of the hydraulic hammer and the hammer hoses. 3. 10) The connecting threads must be undamaged and free of sand or similar foreign body. especially in winter to reach the oil temperature to 30℃ ～ 40℃. Tool Replacement 1) Always wear the protective glasses and helmet when fitting/removing the tool since metal chips may fly off when the retaining bar is hammered out. Optimum oil mperature is 50℃～ 80℃. Right: low pressure (return pressure) line te sec 5. Also if it is contaminated.6 times by the hand grease pump. 3) Check for looseness of threads of hose. 2) Make sure the shut-off valve is completely open. 4. 2) Never use your fingers to check the alignment of the recession in the tool to the oblong holes for the locking bars. 5) Warm up the engine of carrier for five and ten minutes before hammer operation. HydroRam . please fill up the same oil and never mix up oils from di fferent manufacturers. Serial number marking position and Hose connection High & Low pressure Left: high pressure(supply pressure) line. Before operation 1) Check the level and contamination of hydraulic oil in the hydraulic oil tank of the carri er. In case oil is not sufficient. all kinds of bolts and nuts and re-tighten urely. drain it and fill up with new one. 4) Grease the shank bore 5 . tool. the machine operator and any other workers in the noise area must wear personal noise protection gear. adjustment or servicing to either the carrier or the hammer. 3) The hydraulic hammer should be operated only from the driver's seat and should not be put into operation until both carrier and hammer are in the correct position. 7) Check the oil temperature constantly to ensure it does not exceed 80℃. 10) Do not operate the hammer in the underwater and mud without proper equipment. eye and breast protection appliance must be used at all time. 12) Do not operate the carrier if you are under the influence of drugs or alcohol. 4) Shut off the hydraulic hammer immediately if anyone moves in the danger area.BHI 6. . ․ All accumulators are subjected to recurring tests by experts. Defective accumulators must be replaced. 13) Remove hammer from carrier before the transport. Personal protection equipment must be used. Never pry with the tools. . which is much larger for hammer operation than for carrier operation due to the risk of flying debris. 5) When working with a hydraulic hammer. 11) Stop the engine before attempting to make any repairs. the critical cases . operation of the carrier is governed by carrier manufacturer's safety regulations. always lower the boom and insure the carrier is stable. 8) Flying debris from the hammer.the critical noise level of 90 dB(A) is reached or exceeded. ․ Release all pressure prior to servicing or disassembly. Do not open without reading the Manual or consulting the authorized service man! Unauthorized repair work on the accumulator is forbidden. If higher temperatures are measured in the tank. 14) Before leaving the carrier. an oil cooler must be fitted. 15) Never leave the carrier with the engine running. rock or other material may cause serious or injury to the operator. at the latest after 5 years. ear. Hammer Operation 1) Close the front screen and splinter protection apparatus on the cab to prevent possible injury from flying debris during the hammer operation. 9) When operating the hammer. 2) In normal operation. 6) The hydraulic hammer is only suitable for the applications described. fatal Danger of Explosion ․ N₂gas cylinder should be used for charging gas into the accumulator and head cap. Spring Pin. fluids or tools: . Backup Ring. O-Ring. Insufficient greasing may cause abnormal wear of the chisel holder Bushing and tool. damage or defective condition due to: . Buffer Ring.corrosion or failure to protect from adverse environmental conditions: .use of unauthorized parts. .10 times. Wear parts are : Diaphragm. The use of other hydraulic fluids is only permissible after consulting with our service station. At temperature lower than -20℃. alteration or adjustment made to BHI hammer or its parts: .BHI All hydraulic oil brands used in the carrier units are suitable for operating. the hydraulic hammer should not be put into operation.overloading. Please read and understand this Operation Manual!!! Ⅲ. The following are not covered by warranty. WARRANTY Warranty period is six(6) month. it is recommended that oils with a viscosity of category H-LP 36 or higher be used. 1. Injury or death can result from improper operation or maintenance. Seal Kit sets. Stop Pin. use or operation which is not accordance with BHI's published instructions or its authorized distributors: . negligence or improper installation. clean and grease the shank bore.Normal wear and tear of the hammer and any part thereof . using hand grease pump. In summer and in regions with high temperatures. and tool breakage. Round Bushing. When changing tool.Failure.improper repair. Retainer Pin. Pumping is 5 . These parts are not covered by the warranty. Below parts are wear parts.faulty or improper condition of the carrier in which the BHI hammer was installed: HydroRam . Tool. Apply grease at least once a day. but it should be confirmed in writing by BHI in advance. Grease the tool bit at least every 2 or 3 hours more often if the tool becomes dry or material is extremely dusty or abrasive. Tool Holder Bushing. The change of warranty condition is possible by individual contract. the claim application under warranty form should be filled out and mailed to BHI. When it is not done and hammer is broken down.BHI 2. we are going to charge for the needed parts. 3. . make sure that it is installed correctly and a copy of Delivery Record with all signature should be mailed back to BHI. During under warranty In case during under warranty you have problem with your hammer. After installalation of the Hydraulic Hammer After installing the Hydraulic Hammer. Eumsung-kun Choongbook-do. Hydraulic oil: 7. Clean :C. Standard tools: 8. Refill gas :G Lubricate :L. Tighten :T. Not remedied :X 1.BHI Best Hammer Industries 5-91. Korea E MAIL: sales@bhice. Disassembly :D. Purchaser signature: ______________________Date: ____________________ Distributor: _____________________Serviceman: _______________________ HydroRam . Carrier pump: 6. Bracket Frame: 3.com Tel: (82-43) 532 . Instructed proper operation and maintenance procedures. The owner's signature below acknowledges that the hammer above mentioned was delivered to him in a satisfactory condition and he has received proper instruction about the operation and maintenance. Checked on the following items: Symbol for inspection Normal :V. Daeso-myun. Piping: ☐ Pins lubrication ☐ Fully opened shut-off valve ☐ Relief valve set pressure ☐ Pins lubrication ☐ Caution at operation sticker ☐ Performance ☐ Deterioration 4. Controls: 5. Manuals: B.com DELIVERY RECORD To: ______________________________ Owner: _____________________________________ Address: ______________________________________ Distributor: _______________________________ Address: ______________________________________ Service Shop: ______________________________ Address: ______________________________________ Model of Hammer: _____________________Serial No. Repair :M. Hammer body: ☐ Accumulator gas pressure ☐ Head cap gas pressure ☐ tool Holder lubrication ☐ Rubber plugs ☐ Bolt looseness ☐ Tightening of fittings ☐ Oil leakage ☐ Adjustment of control cable ☐ Engine throttle lever position ☐ Characteristics ☐ Quantity of oil ☐ Contamination ☐ Quantity ☐ Operation manual & Parts list ☐ Operating pressure ☐ Operating sound ☐ Oil leakage 2. Daepoong-ri. Replace :R.bhice. Fax:(82-43)532-1372 Website : www. Adjust :A.1370~1.: _______________ Delivery Date: ___________ Model of Carrier: __________________________________________________________________________ A. 1370~1.: 1) Manufacturer & Model 2) Oil supply(gpm) 4) Return Pressure 3) Working Pressure 5) Relief setting 2.BHI Best Hammer Industries 5-91. Dealer name: Address: Completed by: Dealer Customer's name and address: Completed by: Customer ---------------------Customer's Signature Date of repair: Parts used for repair: Part No.bhice. Date of Installation : 3. Daeso-myun. Fax:(82-43)532-1372 Website : www. Daepoong-ri. Eumsung-kun Choongbook-do. it is essential that complete and proper hydraulic adjustments have been verified at the time of the installation. 1 -------------Date ---------------------Dealer's Signature Details of Failure: --------------Date Part Name Q'ty 2 3 HydroRam .com Tel: (82-43) 532 . Refer to your operation manual for the methods of performing these tests and record the readings that you find on this card. Carrier: To insure efficient operation. Korea E MAIL: [email protected] CLAIM APPLICATION UNDER WARRANTY 1. Model & Serial No. Failure to supply this information or to use BHI parts and tools may result in forfeiture of warranty coverage. lbs joules 2205~ 3748~ 5512~ 6173~ 7716~ 13228~ 22046~ 26455~ 5512 7055 8378 8818 13228 28660 35274 44092 300 145 No 253 343 No 362 490 No 542 735 No 687 932 No 1013 1373 No 1808 2452 No 2749 3727 No Impact Energy Class Installed Accumulator in Power Cell * Specifications may be changed without Prior notice.0] HK30 181 [399] 1493 58.5 53 [20.1] Operating Pressure Blows Tool Diameter Hose Diameter kgf/㎠ [psi] b.68] 1/2 2.95] 1/2 3.8] 30~45 [7.2] 45~80 [11.9~ 13.54] 3/4 6~13 100 [3.9] HK40 287 [633] 1609 [63.81] 1/2 1.28] 1/2 2.72] 1 12~20 Applicable Carrier lbs ft. If you do not technical staff.2] ℓ/min 20~33 25~35 [gal/min] [5.3~8. Standard Specifications 1) Top Mounting Bracket Item Operating Weight Overall Length Oil Flow Required Unit Kg [Lbs] mm [inch] HK10 118 [260] 1152 [45.1~ 39.8] 1/2 1.BHI IV.4] HK60 523 [1153] 1835 [72.p.5~3.8~ 21.1] HK80 870 [1918] 2345 [92.94] 3/4 10~16 120 [4.6~9.7~3. You must consult an authorizied.7] [6.3] 30~50 [7.9~ 11.8~4.6] 29.5~ 18.0~2.2] HK45 342 [754] 1788 [70.4] HK20 152 [335] 1295 [51.m mm [inch] inch ton 100~130 100~130 100~130 100~130 80~130 130~150 150~170 150~170 [1422~ [1422~ [1422~ [1422~ [1137~ [1849~ [2133~ [2134~ 2418] 2418] 2133] 1848] 1848] 1848] 1849] 1848] 700~1300 600~1300 600~1200 440~1200 400~1200 440~850 450~750 410~700 46 [1.5~6 90 [3.1~ [21. * Operating Weight : Working Weight (Including Tool and Mounting bracket).4] 40~70 [10.3] HK130 1254 [2765] 2597 [102.2 58 [2. The hammer may have major problems.5 75 [2. TECHNICAL DATA 1. HydroRam .2] 80~110 110~150 [29.8 68 [2. * When You Want to use incorrect carrier which is beyond our recommended range. m mm [inch] inch 1 1¼ 1¼ 1¼ 1¼ 1¼ ton Applicable Carrier 20~28 44092~ 61729 3399 4609 22~30 48502~ 66139 3870 5247 25~35 61729~ 77162 5208 7061 29~36 70548~ 79366 7088 9611 34~42 74957~ 92594 10488 14220 40~65 88185~ 154324 11016 14936 lbs Impact Energy Class ft. The hammer may have major problems. TECHNICAL DATA 1. You must consult an authorizied.lbs joules Accumulator Installed in Power Cell Yes Yes Yes Yes Yes Yes * Specifications may be changed without Prior notice.5~76.6] [63.3] 160~180 [2276~ 2560] 250~400 158 [6.4] [55.4] ℓ/min 120~180 [gal/min] [31.7~47.3] HK250 2310 [5093] 2978 [117.p.9] HK500 3780 [8333] 3592 [141.0] 170~240 [45~63. * Operating Weight : Working Weight (Including Tool and Mounting bracket).09] Operating Pressure kgf/㎠ [psi] Blows Tool Diameter Hose Diameter b. If you do not technical staff.BHI IV.10] HK330 3010 [6636] 3302 [130.4] 160~180 [2276~ 2560] 320~450 155 [6.2] 140~190 [37~50. * When you want to use incorrect carrier which is beyond our recommended range. HydroRam .43] 180~250 210~290 240~320 [47.0] HK380 3345 [7374] 3478 [136.5~63.4~84.2] 160~180 [2276~ 2560] 300~450 145 [5. Standard Specifications 1) Top Mounting Bracket Item Operating Weight Overall Length Oil Flow Required Unit Kg [Lbs] mm [inch] HK220 1790 [3946] 2802 [110.69] 160~180 [2276~ 2560] 250~350 180 [7.22] 160~180 [2276~ 2560] 220~380 170 [6.6] 160~180 [2276~ 2560] 370~460 138 [5.7] HK280 2710 [5975] 3225 [127. * Operating Weight : Working Weight (Including Tool and Mounting bracket).m mm [inch] inch ton lbs ft.3] [inch] ℓ/min 20~33 25~35 30~45 30~50 40~70 45~80 80~110 [gal/min] [5.54] 3/4 6~13 13228~ 28660 1013 1373 100 [3.0~2. Standard Specifications 2) Silent Mounting Bracket Item Operating Weight Overall Length Oil Flow Required Operating Pressure Blows Tool Diameter Hose Diameter Unit Kg [Lbs] HK10S 115 [254] 1152 [45. TECHNICAL DATA 1.7] HK60S 540 [1190] 1829 [72.2 3748~ 7055 253 343 58 [2.p.5 2205~ 5512 300 145 53 [20.4] HK20S 148 [326] 1295 [51.95] 1/2 3.8] 1/2 1.81] 1/2 1.2] [7.9] [7.94] 3/4 10~16 22046~ 35274 1808 2452 Applicable Carrier Impact Energy Class Accumulator Installed in Power Cell No No No No No No No * Specifications may be changed without Prior notice.5~18.6~9.4] [11.1] kgf/㎠ [psi] b.BHI IV. * When you want to use incorrect carrier which is beyond our recommended range.7] HK40S 298 [657] 1600 [63.9~13.9~11.7~3. The hammer may have major problems.8~21.3~8.0] HK30S 192 [432] 1492 [58.28] 1/2 2. You must consult an authorizied.2] [10.8~4. If you do not technical staff.1] [21.5~3.1~29.0] HK45S 352 [776] 1795 [70. HydroRam .0] HK80S 890 [1962] 2395 [94.8 5512~ 8378 362 490 68 [2.68] 1/2 2.5 6173~ 8818 542 735 75 [2.5~6 7716~ 13228 687 932 90 [3.7] [6.lbs joules 100~130 100~130 100~130 100~130 [1422~ [1422~ [1422~ [1422~ 1848] 1848] 1849] 1848] 700~1300 600~1300 600~1200 440~1200 80~130 [1137~ 1848] 400~1200 130~150 [1849~ 2133] 440~850 150~170 [2133~ 2418] 450~750 46 [1. Standard Specifications 2) Silent Mounting Bracket Item Operating Weight Overall Length Oil Flow Required Operating Pressure Blows Tool Diameter Hose Diameter Applicable Carrier Impact Energy Class Unit kg [Lbs] mm [inch] HK130S 1295 [2855] 2695 [106.10] 1¼ 25~35 61729~ 77162 5208 7061 Yes 250~400 158 [6. You must consult an authorizied.BHI IV.4] HK330S 3025 [6669] 3295 [129.lbs joules 180~250 210~290 [47. * When you want to use incorrect carrier which is beyond our recommended range. The hammer may have major problems.m mm [inch] inch ton lbs ft.9] 140~190 [37~50.0] 170~240 [45~63.69] 1¼ 34~42 74957~ 92594 10488 14220 Yes 250~350 180 [7.6] kgf/㎠ [psi] b.p. * Operating Weight : Working Weight (Including Tool and Mounting bracket). If you do not technical staff.1] HK220S 1860 [4101] 2892 [113.2] HK280S 2780 [6129] 3251 [128.1] HK500S 3865 [8521] 3654 [143.5~63.6] 150~170 160~180 160~180 160~180 160~180 160~180 160~180 [2134~2418] [2276~2560] [2276~2560] [2276~2560] [2276~2560] [2276~2560] [2276~2560] 410~700 120 [4.9] 240~320 [63. HydroRam .7] 1¼ 22~30 48502~ 66139 3870 5247 Yes 320~450 155 [6.9] HK250S 2350 [5181] 2945 [115. TECHNICAL DATA 1.09] 1¼ 40~65 88185~ 154324 11016 14936 Yes Accumulator Installed in Power Cell * Specifications may be changed without Prior notice.72] 1 12~20 26455~ 44092 2749 3727 No 370~460 138 [5.7] HK380S 3355 [7397] 3482 [137.5~76.4~84.43] 1 20~28 44092~ 61729 3399 4609 No 300~450 145 [5.1~39.3] ℓ/min 110~150 120~180 [gal/min] [29.7~47.4] [55.22] 1¼ 29~36 70548~ 79366 7088 9611 Yes 220~380 170 [6.6] [31. piston (E) reciprocates. Principles of Operation The relation between the area(A2) affecting the pressure from the upper chamber of the piston and the area(A1) affecting the pressure from the lower chamber of the piston is A2>A1 and high pressure applies to A1. 2) Valve Shift When the area (A1) of the lower chamber of the Piston(E) reaches to the chamber of the Cylinder Converting Port(P2). Cylinder Converting remains Port(P2) communicates with Valve Converting Port(B4) and delivers the high pressure oil. the high pressure N2 gas and gas energy stored in the upstroke of the piston (E) 1) Upstroke of Piston As high pressure always applies to A1 and A2 changes to low pressure. applies and upward it is to Valve until it reaches the to gas Cylinder Converting Port(P2). Valve(K) with Upper moves upward and shifts. When A2 changes from high to low pressure or vice versa. the force affects the Piston(E) upward. When the area(V1) of the Valve Converting Port(B4) applies to high Pressure pressure. Valve(K) remains in the down position. the chamber of the Cylinder Converting Port becomes and high pressure. Inside of head cap is charged with effectively acts on the piston (E) during the impact. As high Pressure Port(B4) Converting converts to low pressure. HydroRam .BHI 2. While Piston(E) moves pressure Port(B1.B2) compressing Valve High contained in the head cap chamber. Then Valve High Port(B2) communicates Port(P4) of the Piston and oil being pressurized is admitted to Upper Chamber of the Piston. B1 : Valve High Pressure Port B2 : Valve High Pressure Chamber B3 : Valve Low Pressure Port B4 : Valve Converting Port V1 : Valve Converting Area Gas : N2 gas Chamber K : Valve P1: Cylinder High Pressure Port P2: Cylinder Converting Port P3: Cylinder Low Pressure Port P4: Upper Port of the Piston H: Tool E: Piston .BHI 3) Power Stroke The difference of the area A1<A2 makes the Piston(E) move downward until Cylinder P2 Port communicates with P3 Port. Piston starts to move upward again. After that. 4) Impact Kinetic energy obtained by the Piston during the power stroke is transmitted to the tool(H) and then impact energy required to break is transmitted to the rock. its descending speed is accelerated by the pressure of gas in the Upper Chamber of the Piston. When the Piston(E) comes down. External Dimension .BHI 3.Power cell and Top Bracket HydroRam . Construction .Excavator & Hammer Bracket ․ Top mounted and silence bracket on excavator must connect with hydraulic pipe lines.BHI 4. . BHI 5. A direction => turn it clockwise HydroRam . Hex Head (Mounting Bolt) Part Name [Units: kg․m/N.m] Model HK10 HK20 HK30 HK40 HK45 HK60 HK80 HK130 HK200 HK220 HK250 HK280 HK330 HK380 HK500 All Model HK220 HK250 HK280 HK330 HK380 HK500 Torque 30/294 30/294 28/274 28/274 28/274 28/274 70/686 130/1274 130/1274 130/1274 230/2255 230/2255 230/2255 230/2255 230/2255 30/294 85/834 85/834 85/834 85/834 100/980 85/834 Accumulator Cover Bolt Grease Nipple 6. B direction => turn it counterclockwise In case of slower than basic turn. Blow Speed Control 1) Standard turn initially set at the factory means turning the adjuster counterclockwise after being completely locked. Torque Chart Part Name Model HK10 HK20 HK30 HK40 HK45 HK60 Tension Bolt HK80 HK130 HK200 HK220 HK250 HK280 HK330 HK380 HK500 HK200 HK220 HK250 HK280 HK330 HK380 HK500 All Model Torque 30/294 30/394 35/343 40/392 50/490 55/539 150/1471 150/1471 189/1853 280/2746 350/3432 400/3923 400/3923 480/4707 480/4707 35/343 35/343 35/343 32/314 32/314 32/314 32/314 10/98 Set Bolt Part Name Model HK10 HK20 HK30 HK40 HK45 HK60 HK80 HK130 HK200 HK220 HK250 HK280 HK330 HK380 HK500 HK200 HK220 Accumulator Assembly Bolt HK250 HK280 HK330 HK380 HK500 Torque 30/294 30/394 35/343 40/392 40/392 40/392 150/1471 150/1471 250/2452 250/2452 330/3236 400/3923 370/3628 400/3923 400/3923 100/980 100/980 100/980 100/980 100/980 100/980 100/980 Middle Block Belt Gas Valve Bolt. 2) Initial (standard) turn [Initial turn/(Total turn)] Model Turn HK130 1/(12) HK220 1/(10) HK250 1/(10) HK280 1/(11) HK330 1/(14) HK380 1/(11) HK500 1/(12) In case faster speed is needed than basic turn. It is especially important to follow this rule when using the hydraulic hammer so that it can correctly test the hardness of the material. Also after 10 minutes working start is recommended. it is recommended that the Hammer is run in vertical position at about 250~300 blow per minute for one hour.BHI Ⅴ. During that time avoid Hammering in inclined condition. 2) Applied Pressure All hammers must have sufficient pressure against the tool to allow the transmission of energy. or the shock wave to flow through the tool to the material being broken. Hammer 1) Proper Positioning The hammer must be positioned perpendicular to the material. the impact is high. When installing a new Hammer. OPERATION AND HANDLING OF HYDRAULIC HAMMER 1. dipper and attachment controls so that the hammer follows the tool. applied pressure is continuously adjusted by using a combination of the boom. it could respond as though it was working in light material and remain in a high frequency. If the frequency is fast. When it is properly aligned. impact created by the piston is not transmitted to the rock as a shock wave but is absorbed by the hammer and excavator causing abnormal structural fatigue. . If the frequency is slow. If it is improperly aligned. it selects best frequency impact combination for maximum performance with that material at that particular time. As the tool moves through the material. Applied Pressure Must be Correct If applied pressure is insufficient. the impact is low. the tool will dance around on the material rather than sending energy into the rock. low impact mode. When this happens. Takes small bits and do not work on one spot for more than 30 seconds. power cell and excavator. So it is important to properly size the hammer to the carrier. It is wiser to start from the edge and work towards the center. If the hammer is too heavy for the carrier. HydroRam . do not attempt to break them from the center. 3) Secondary Breakage of Boulders " Short Bursts = Production = Long Tool Life " When breaking large rocks. It is more efficient if breaking is done from the edge. As the hammer breaks through the material. the resulting damage will be worse. 4) Surface Rock Demolition Do not try to break too much at one time. This method will increase your productivity and cause less wear and tear on your equipment. the excavator will drop suddenly and harmful shock loads will be transmitted to the tool.BHI Applied pressure should not lift the carrier high off the ground. These collisions create a disorganized mass of energy. Then 2. remove the marks from the tool and bushing or replace clean and lubricate the shank for installation of the tool. Stop the hammer immediately and repair the accumulator. Rules to Remember 1) Avoid Blank Hammering At All Times. meeting other waves coming down the tool in violent collisions. the piston will strike the tool shank with full impact. And since there is no material to absorb the energy. causing extensive wear and tear to the tool and other hammer components. tension bolts and the hammer itself. If this happens. tool retainers. forcing the tool against the retainers and causing premature wear and failure to the tool. Tighten it properly or replace it. chuck housing. piston. Remove the tool and check the bushing. on the of seizing as necessary. ․The Tool Does Not Drop. Abnormal nitrogen surging accumulator means is the empty. If the visible length of the tool does not change. . the shock waves will bounce back up the tool. You can tell if it is broken or loose by tapping bolt and listening for a distinctive high pitched sound. it usually means the tool has seized in the bushing. If obvious signs are present. ․ Tension Bolt is Loose Or Broken.BHI Stop Immediately When ․The Hydraulic Hoses Jerk Violently. 3) Do not use the tool or hammer space as a lifting device. but also it can cause damage to the hammer. tool and bushings. Prying is the most common cause of tool breakage. 4) Do Not Pry Under Any Circumstances. Prying inhibits of the shock wave through the tool and creates heat buildup in the bushing area. HydroRam .BHI 2) Never Use A Hammer For Activities For Which It Was Not Designed. Insure hook or your some hammer type features of this capacity are normally fitted with a rock protective structure around the chuck housing. It also causes damage to other hammer components as well as reducing productivity. Not only this is dangerous. . suspend the hammer in the air (with the tool extended) to activate the automatic stop. During 6) Do Not Allow Cylinders To Reach The End Of Their Stroke They will not tolerate the hammer vibrations in this position. store the tool inside.BHI 5) In Cold Weather. Always Warm Your Equipment Up Properly Before Operating After the carrier is warmed up. extremely low temperatures. Activate the control to circulate the oil and warm the hammer. Warm the tool bit by operating at slow speeds for five to ten minutes. 11) Do not open Accumulator bolt Accumulator is a high pressurized N2 gas container. HydroRam . 8) Moves The Tool to New Positions Often. 9) Do not immerse the hammer into water or mud. often to avoid this effect. heat resulting in loss of tool strength and wear resistance. please contact us. When components except tool are immersed in water and mud. During hydraulic hammer operation. A power can build up under the tool and dampen the shock wave travelling through the tool and into the material.(option) 10) Do not touch the tool and hammer body. it can reach high temperatures. piston and other components may be rusted and become damaged at an early stage. Move the tool * For under water operation. Even 30 seconds can be too long for large Hammers. long causes Working in one spot too buildup in the tool.BHI 7) Never Let The Hammer Strike On The Same Spot More Than 30 Seconds. tool and boom. (1) In the bracket cap (2) In the charging valve (3) In the accumulator (4) In the side plates (5) In the tool Holder pin (3) The tool retainer pins When replacing tool retainer pins always replace them in sets and rotate then equally. (2) Check for loose nuts and bolts. Operator's routine maintenance 1) Lubrication Grease the tool and bushings every two four hours of operation. grease. rear. more than in dusty or severe conditions. .BHI 3. to often with five to ten pumps of good quality. Check welds for possible cracks on the bracket cap. (4) Excessive oil leakage down the tool This is an indication of worn or damaged seals that need to be replaced. high temperature 2) Inspection Points: (1) Visual Inspection. Twisting action caused by the flat edge of the tool against the tool and retainers. HydroRam . 3) Check wear on tool holder bushing Replace tool. Cracks and chips could indicate that: (1) Lubrication is insufficient (2) Grease type is not appropriate (3) Blank hammering and side loading is occurring and hammer is being operated improperly. Periodic Maintenance (Every 100 hours) 1) Remove the tool and all grease from the tool holder bushing Do not use a pressure washer. including the lubrication port. or solvents as they damage the seals. 5. If they are worn or deformed. This could cause the tool to overheat and mushroom. Factors of Tool Life 1) The type of work ( Twisting action ) Breaking reinforced concrete. rotate or replace as required. 2) The type of rock A particularly abrasive rock will wear the tool out faster than less abrasive material. causing premature hammer failure. Certain types of rock turn to powder which cushions the impact. 2) Check wear on tool pin Examine the shoulders and side surface. for instance. Some Bushings are grooved to provide even grease distribution. tool holder Bushing or both where the combined wear exceeds 5mm.BHI 4. is more detrimental to tool than concrete without rebar. Excess tool holder Bushing wear causes tool misalignment to the piston. steam. 4) Replace damaged or worn parts Then wipe all components clean. Replace the Bushings when the grooves are worn through. Hand grease the tool shank and inside the chuck bushings before placing it back into the hammer. Check for chips or cracks inside the housing and on the bushing surfaces. sharpen the t ip.BHI 3) Blank hammering will chip tool on the top and in the retainer area. ․ Rapid cooling by submersing in water. These chops accelerate wear and tear on the tool. ․ Excessive wear on bushings and retainers ․ Machine movement ․ Blank hammering ․ Prying ․ Drilling ․ Tool deflection ◈ Replacement of Tool : When a tool bit is worn out. it is liable to slip. not it will make the heat treatment har dened with a new tool. ․ Push out both of the bolt pin by hammering and pick out tool. The difference gap is over 9 mm. The tool is heavy. ․ Reverse disassembly procedures to install a replacement of the tool. Grinding the tip many times to sharpen the edge. then replace tool holder together with the tool. ․ Use the steel bar and hit the bolt pin on the opposite side by hammer. retainer pins. so caref ul attention is required. Lack of lubrication will increase the temperature in the bushings and tool shank which ultimately causes deterioration of these components. 4) Proper lubrication at all times. . ◈ COMMON TOOL ABUSE ․ Side loading ․ Improper warm-up ․ Unstrained operator ․ Heat build-up from working in one spot. round Bushing. ◈ REPLACEMENT OF tool ․ Put the steel bar supplied as a standard part into the hole of spring pin and hit the spring pin on the opposite side by hammer. and the piston. Then. (4) Fix the cap of gas charging adapter after turning it clockwise. ◈ Head cap & Accumulator Optimum Nitrogen Gas Pressure [kg/㎠(psi). (3) Connect the gas charging adapter with gas valve. Lay down the hammer and let the tool extend fully. ․ Gas pressure changes according to the position of the tool. so that gas pressure inside head cap is indicated on the pressure gauge.BHI 6. (2) Turn the handle of gas charging adapter counterclockwise until it stops. at20℃] Model Head Cap Model Head Cap Accumulator HK10 HK20 HK30 HK40 HK45 HK60 HK80 15~18 15~18 15~18 17~18 17~18 17~18 16~17 (213~256) (213~256) (213~256) (242~256) (242~256) (242~256) (228~242) HK130 HK220 HK250 HK280 HK330 HK380 HK500 17~18 17~18 17~18 16~17 17~18 18-20 17~18 (242~256) (242~256) (242~256) (228~242) (242~256) (256~284) (242~256) 55~60 55~60 55~60 55~60 55~60 55~60 (782~852) (782~852) (782~852) (782~852) (782~852) (782~852) HydroRam . it should be set according to the chart as below. N2 gas pressure maintenance 1) Inspection of N₂Gas Pressure Inside Head Cap ( same as the Accumulator ) (1) Remove the cap from the gas valve. (5) Turn the handle. ․ If it is not optimum gas pressure. (5) Open the main valve of gas charging cylinder slowly counterclockwise again to refill the gas up to optimum gas pressure. Tighten the cap at the optimum pressure. the gas pressure will become lower. (2) Next procedures are same as removal procedures of gas charging adapter. (2) Remove the cap of the gas charging adapter and connect to charging hose. close the main valve of gas charging cylinder by screwing clockwise. (3) Remove the gas charging adapter from the gas valve and fit the cap of gas valve. (3) Open the main valve of gas charging cylinder counterclockwise to reach the pressure gauge to optimum pressure. Close the cap clockwise to stop the gas filling. (1) Connect the charging hose to N₂gas cylinder. Remove the gas charging adapter finally.BHI 2) Removal of gas charging adapter (1) Turn the handle of gas charging adapter counter clockwise until it stops. (2) Unscrew the cap and release the gas inside the gas charging adapter. (4) Turn the handle of gas charging adapter clockwise and stop when the pressure gauge indicator moves. Turn the handle clockwise to tighten. . Also turn the handle of gas charging adapter counterclockwise not to leak out. 4) Filling N₂Gas Take the following procedures after of Inspection of N₂gas pressure inside head cap mentioned above. (6) When the optimum gas pressure is obtained. 3) How to set the gas pressure (1) If you loosen the cap slowly after taking the above procedures. reading the gauge indicator. Nitrogen Gas Charging Pressures Table Depend upon AMBIENT Temperature 1) N2 GAS CHARGING KITS PART LIST No 0 1 2 3 4 Part No D4698000 DA698000 13105900 16802000 13105910 13105930 13105920 Part Name N2 GAS CHARGING KITS N2 GAS 3-WAY VALVE ASSEMBLY N2 HOSE N2 COUPLING KIT N2 GAS CYLINDER Q‘ty 1 1 1 1 1 1 1 HK10~HK60 HK80~HK500 Remarks HK10~HK60 HK80~HK500 HydroRam . ◈ Pressurized container! Do not open without reading the Operation Manual or consulting the authorized service personnel! 7. it means that accumulator does not work.BHI 5) Inspection of accumulator If there is a big tremor on the hose of high pressure line. Stop the operation and inspect the accumulator. 7~21.1 13.0~57.BHI 2) Head Cap Part ( Low Pressure) Model Temp °C 70 60 50 40 30 20 10 0 -10 -20 °F 158 140 122 104 86 68 50 32 14 -4 238~285 233~279 228~273 223~267 218~261 213~256 208~249 203~243 198~237 193~231 HK10~HK30 HK80.0~17.6 14.2 .3 2 3) Accumulator Part ( High Pressure ) Temp °C 70 60 50 40 30 20 10 0 -10 -20 Model °F 158 140 122 104 86 68 50 32 14 -4 PSI 925~1009 896~978 868~947 839~915 810~884 782~852 753~822 724~790 696~759 667~728 HK220 ~ HK500 kg/cm 2 65.7~16.7 13.4~20.1 16.1~16.2 19.0 61.8 16.4~16.7 14.3 HK10~HK30 HK80.7~18.7 18.3 15.4~19.0 14.7 16.6~14.1~21.8 15.2 55.0~18.6 49.4 15.2~15.6~16.0~64.3~17.5~20.6 59.4 17.0~60.4 57.1~21.6 18.4 47.5~15.3~19.7~18.9 20.0~51.6~17.9 17.1~69.0~62.0 53.3~17.1~71.1 18.9~20.0~18. HK280 HK40~HK500 PSI 285~303 277~294 269~286 260~277 252~268 227~241 219~232 210~224 202~215 194~206 303~321 294~312 286~302 277~293 268~284 241~256 232~246 224~237 215~227 206~218 16.0~53.1 13.8 15.5 21.8 51.0~66.7~20.3~22.3 14.0 15.3~18.3 19.8~19.0 14.0~55. HK280 HK40~HK500 kg/cm (≒bar) 20.9~16.6 15.0~18.6 20.0 63.0 16.8~15. Contaminated oil should be changed without delay. If higher temperatures are measured in the tank. it must be selected the application. Maintenance of oil filter Contaminated oil results in malfunctions of the hammer as well as carrier and cause damage to parts. Replacement of filter: first 50 hours and every 100 thereafter. When changing oil. An oil filter must be fitted in the return line of the hydraulic system with a mesh of no greater then 50 micrometers and a magnetic separator. an oil cooler must be fitted. Minimum viscosity Optimum viscosity 32 cSt 46-68 cSt Check the oil temperature constantly to ensure it does not exceed 80℃.2 Shell Alvania EP2 Lithan EP2 Mobilplex 48 When using oil at a extremely cold or hot weather. Replacement of hydraulic oil: every 500 hours. 9. cylinder and pipes. Pay special attention to oil contamination. Hydraulic oil & grease 1) Hydraulic oil The following working materials are required to operate the hydraulic hammer. according to HydroRam . Cleaning or replacing oil filter also requires check for contamination. thoroughly wash oil tank. Contact us or the service shop. Use of other hydraulic fluids is subject to approval. oil hours Only approved hydraulic oils should be used. 2) Grease : NLGI No. All hydraulic oils recommended by the excavator manufactured are suitable for hammer operation.BHI 8. bracket pin part .Tension Bolt . Mounting Bolt part ․Tighten screw . Nitrogen Gas leakage ․Change Seal in every 6 months ․Change Pads in Silent Housing in every 6 months 6 Every 6months . Hose Adapter part .Bracket: Pin part .bracket set bolt part .Power cell: Tension Bolt. Maintenance Checking Schedule Item Inspection ․Lubricate the working steel 2 to 5 times per shift (depending on the conditions) ․Check the Bolts 1 During the shift .BHI 10.power cell tension bolt part ․Tighten screw connections ․Hydraulic hose & piping leaks 2 Daily ․Pipe clamps still fit correctly ․Check bracket cracks ․Check spring pin & rubber plug ․Tighten screw connections ․Adapter & fitting for wear 3 Weekly ․Check spring pin & rubber plug ․Check impact surface of working steel for chips ․Check tool for crack ․Check pressure accumulator & head cap ․Working steel for wear ․Check Tool Holder Bushing for wear ․Check Tool Holder Round Bushing for wear 4 Every 2 weeks ․Check Bracket for wear ․Tighten screw .Set Bolt and Every bolt 5 Every month ․Check wear & damage of Retainer Pin ․Check wear & damage of Bracket ․Overplus wear point ․Hydraulic Fluid.Bracket : Set Bolt. all 4 bolts are to be checked. Adjust the oil pump Connect to oil cooler Replace with new relief cartridge HydroRam . In case of the extension bolt of accumulator.BHI Ⅵ. but hammer is not connected to oil cooler Defective relief valve Required action Refill hydraulic oil Reduce the speed of the engine. Required action Connect them correctly Open shut-off valve Readjust nitrogen gas pressure Damaged screw couplings are blocking pressure or Replace with new one return lines Defective electric system for hammer operation. If the tension bolt is broken. TROUBLE SHOOTING Dismantle the hammer after releasing the gas from head cap. Defective magnet of valve switch Operating pressure too low Lack of hydraulic oil Call authorized service man Replace magnet Inspect the engine speed of carrier and readjust the operating pressure. all 4 bolts are to be checked for tight fitting. Fill hydraulic oil ․High frequency and low blow power Cause 1 2 No gas in head cap: Defective ring of the upper seal O-ring is damaged Required action Replace seal ring Replace o-ring ․Working temperature is high. Cause 1 2 3 4 Oil is not sufficient Oil flow of the carrier to the hammer is excessive Oil temperature is high. too. ․ Hammer does not start Cause 1 2 3 4 5 6 7 8 Pressure and return lines have been mixed up Shut-off valve or return lines are close Gas pressure in head cap too high. replace with new pressure relief cartridge. Open it fully Charge the gas and adjust the pressure. 11 Lots of tremor of the hose can make damage at the entrance of hammer! 12 Hydraulic oil pressure is low ․Oil leakage Cause 1 2 3 Shut-off valve is not open completely Defective couplings of hydraulic pipe lines Poor main pump performance Required action Open shut-off valve Replace couplings defected Call authorized service man ․Reduced blow power and frequency Cause 1 2 3 Loose screw connection. repair with grinder Check and refill the hydraulic oil Wash or replace oil filter and cooler Replace return line more than 25mm of inner diameter Check the pressure Return line must be connected directly to the oil tank or filter Replace the diaphragm Check the pressure and if it is red.BHI ․Low blow frequency Cause 1 2 3 4 5 6 7 8 9 Oil flow insufficient Couplings of hydraulic pipe lines are loose Shut-off Valve is partially close. Defective O-Ring Loose extension bolt of accumulator Dust seal is worn Required action Tighten screw connection. Replace with new one Replace O-ring and Back-up ring. Check the surface of the Tool and Round Bushing. Defective diaphragm of accumulator. Tighten extension bolt Replace seal and grease the tool every 2 or 3 hours during operation . If the tool is seizing. 10 Return line connects to control valve. Pressure in head cap is low tool shank is seizing or tool dose not work smoothly Oil temperature exceeds 80°C Flow resistance of oil filter and oil cooler are high Inner diameter of return line is small Return pressure is high Required action Adjust the speed of engine Tighten. Tool Bit Type and Code List * Tool Bit Code List Type HK10 HK20 HK30 HK40 HK45 HK60 HK80 HK130 HK220 HK250 HK280 HK330 HK380 HK500 HydroRam A (CONE) DI000690 DJ000400 D3000250 D4000090 D5000060 D6000060 D7000080 D8000060 DA000060 DB000230 DC000060 DD000060 DE000140 DF000090 B C D (FLAT) DI000280 DJ000440 D3000240 A0100080 D5000090 D6000090 A3100090 D8000070 DA000090 DB000260 DC000090 DD000070 DE000130 DF000100 E (MOIL) DI000700 DJ000410 D3000210 A0100050 D5000050 D6000050 A3100050 D8000050 DA000050 DB000220 DC000050 DD000050 DE000120 DF000060 F (SPADE H-WEDGE) DI000780 DJ000460 D3000260 A0100100 D5000100 D6000100 A3100100 D8000100 G (SPADE V-WEDGE) DI000790 DJ000470 D3000270 A0100110 D5000110 D6000110 A3100110 D8000110 - (V-WEDGE) (H-WEDGE) DI000720 DJ000430 D3000230 D4000070 D5000080 D6000080 D7000070 D8000080 DA000070 DB000240 DC000070 DD000090 DE000110 DF000080 DI000710 DJ000420 D3000220 D4000060 D5000070 D6000070 D7000060 D8000080 DA000080 DB000250 DC000080 DD000080 DE000100 DF000070 . ACCESSORY PARTS LIST 1.BHI Ⅶ. O-ring Adapter Code List HOSE SIZE 1/2 3/4 1 1¼ O-RING ADAPTER PF*PF 13008830 13008850 130087870 13008890 PF*JIC 13009330 13009340 13009360 13009380 . Union Cap Code List HOSE SIZE 1/2 3/4 1 1¼ PF TYPE 13007110 13007130 13007150 13007170 UNION CAP JIC TYPE 13007600 13007610 13007620 13007630 ORFS TYPE 13007420 13007440 13007450 13007460 3. Hose Plug Code List HOSE SIZE 1/2 3/4 1 1¼ PF TYPE 13006530 13006550 13006570 13006590 PLUG.BHI 2. HOSE JIC TYPE 13008400 13008410 13008420 13008430 ORFS TYPE 13008220 13008240 13008250 13008260 4. Base Cover Plate Dimension (1) Top Bracket MODEL HK10 HK20 HK30 HK40 HK45 HK60 HK80 HK130 HK220 HK250 HK280 HK330 HK380 HK500 A 310 310 352 352 352 400 495 570 570 660 704 704 730 760 B 350 350 366 366 366 456 502 630 630 780 810 810 832 896 C 25 25 18 18 18 30 45 40 40 40 40 40 40 60 D 100 100 110 110 110 132 136 180 180 220 235 235 251 258 E 100 100 110 110 110 132 140 190 190 260 260 260 250 260 F 100 100 110 110 110 132 136 180 180 220 235 235 251 258 G 25 25 26 26 26 30 30 35 35 35 40 40 40 60 H 80 80 100 100 100 118 145 165 165 185 200 200 220 220 I 100 100 100 100 100 104 145 170 170 220 220 220 210 200 [unit:mm] DIA 21 21 18 18 18 20 26 32 32 38 38 38 38 38 HydroRam .BHI 5. BHI (2) Silence Housing Bracket MODEL HK10S HK20S HK30S HK40S HK45S HK60S HK80S HK130S HK220S HK250S HK280S HK330S HK380S HK500S A 310 310 320 320 320 378 495 520 520 660 704 704 730 760 B 350 350 400 400 400 495 590 680 680 780 810 810 832 896 C 25 25 23 23 23 24 35 40 40 40 40 40 40 60 D 100 100 115 115 115 149 170 200 200 220 235 235 251 258 E 100 100 124 124 124 149 180 200 200 260 260 260 250 260 F 100 100 115 115 115 149 170 200 200 220 235 235 251 258 G 25 25 23 23 23 24 30 40 40 35 40 40 40 60 H 80 80 137 137 137 100 145 127 127 185 200 200 220 220 I 100 100 130 145 186 186 220 220 220 210 200 unit[mm] DIA 21 21 18 18 18 20 26 32 32 38 38 38 38 38 HydroRam . please contact to us. UNDERWATER KIT(OPTION) The hydraulic hammer should never be left in or under water with the compressed air supply switched off. the cylinder will fill up with water.BHI Ⅷ. Without the compressed air supply. which will then result in serious damage. * For under water operation.(option) HydroRam . BHI Ⅸ. AUTOLUBE KIT(OPTION) . 7) Claim can not be made in case of excessive abrasion of Tool. 1) When damage occurs in the part where tool meets with Piston. 3) Free replacement can not be made when damage occurs below Retainer Pin. 6) When problem occurs. which is below Tool Holder Bushing. 4) The Serial Number of tool must be checked in order to make a claim. damage can occur by the different hardness caused by different heating treatment(process). 2) Tool will be replaced with no charge in case damage occurs in aperture of Retainer Pin. WEAR PARTS AND JUDGMENT .Horizontal cuts . In case Piston and tool are not genuine parts. the damaged area as well as the Serial Number must be photographed and the damaged part must be collected and kept for evidence .Tool Tool is a wear parts and can also have various problems. 5) The Serial Number is on the side of aperture for Retainer Pin. the degree of abrasion on tool Holder Bushing and Round Bushing must be checked.BHI Ⅷ.Vertical cuts . since it is considered user's fault such as prying.Flatness of hitting parts HydroRam . Free replacement will be made when choice goods are used in standard condition. .Breakage of hitting parts . BHI (1) Charged Repair Damage caused by using non genuine Piston or tool Horizontal cuts below the joint with Retainer Pin Wear around the End Taper Damage occurring after using Flat type Tool more than 45mm of wear Damage occurring after using Moil. V-Wedge Type more than 75mm of wear In case Tool is pushed in by continuous hitting on hard rocks Damage to upper part of Tool by excessive abrasion of Tool Holder Bushing (2) Free Repair Breakage or flatness of upper hitting part of tool in normal usage condition Damage to joint of Retainer Pin Vertical cuts in Tool . H-Wedge. 5 444. WEAR LIMIT DIMENSIONS FOR REPLACEMENT PARTS 1) Piston Stroke part length as a new part A mm 140 154 192 195 195 244 275 303 326 319 405.559 7.803 16.118 35.5 435.520 15.795 12.889 14.795 32.5 391.787 11.913 27.567 10.323 28.087 18.835 12.843 9.023 7.874 7.717 19.387 6.874 9.929 12.945 mm 200 200 200 250 250 250 250 250 400 450 500 500 500 500 Usable length A at reject limit A' inch 7.756 27.449 18.5 393 434 446 inch 5.843 9.500 Model HK10 HK20 HK30 HK40 HK45 HK60 HK80 HK130 HK220 HK250 HK280 HK330 HK380 HK500 2) Tool Model HK10 HK20 HK30 HK40 HK45 HK60 HK80 HK130 HK220 HK250 HK280 HK330 HK380 HK500 Effective length A as a new part A mm 302 376 411 432 367 466 578 709 694 721 833 816 892 913 inch 11.BHI Ⅸ.511 6.062 7.559 15.472 17.965 15.346 22.827 11.874 7.413 17.008 14.5 Stroke part length A at reject limit A' inch 5.638 7.181 17.386 32.638 9.843 15.677 7.843 9.028 17.748 17.126 35.843 9.850 12.685 HydroRam .685 19.886 15.346 mm 139 153 191 194 194 243 274 301 325 318 403.606 10.519 7.685 19.677 9.685 19. 693 7.102 1.669 5.071 3.831 2.677 2.669 0.937 4.921 5.134 4.575 2.811 2.071 3.086 2.023 0.692 7.677 2.929 7.740 4.165 1.457 6.457 6.339 6.709 6.756 mm 14 11 26 22.724 5.220 1.614 2.5 27 31 41 55 48 43 55 49.433 5.772 1.220 6.102 6.047 1.709 6.945 1.087 inside diameter A at reject limit mm 48 55 60 70 78 94 105 125 144 151 161 164 176 186 inch 1.889 2.5 24 28 38 52 45 40 52 46.165 2.724 5.283 2.937 4.953 3.953 3.496 2.283 2.433 5.945 6.338 6.362 2.543 3.949 2.5 70 inch 0.063 1.433 1.220 6.906 0.322 Thickness a new part C mm 17 14 23 19.543 3.087 Reject limit of bore(A) mm 55 60 70 78 95 105 125 144 151 161 164 176 186 inch 2.756 3.890 1.323 4) Round Bushing Model Bore(A) of new part mm HK10 HK20 HK30 HK40 HK45 HK60 HK80 HK130 HK220 HK250 HK280 HK330 HK380 HK500 53 58 68 75 90 100 120 138 145 155 158 170 180 inch 2.693 2.5 73 inch 0.921 5.134 4.795 3.BHI 3) Tool Holder Bushing Model HK10 HK20 HK30 HK40 HK45 HK60 HK80 HK130 HK220 HK250 HK280 HK330 HK380 HK500 inside diameter A as a new part mm 46 53 58 68 75 90 100 120 138 145 155 158 170 180 inch 1.551 0.945 6.701 4.669 5.768 0.886 1.165 2.362 2.165 1.102 6.047 1.874 Reject limit Thickness ø A .929 7.551 0.086 2. 701 3. Tears.866 1.504 3.504 3.181 1.819 4.543 3. Hardening or Inverting of Seal Kit Charged Repair Oil leaks due to excessive use of Seals without replacement Hardening of Seals due to excessive rise of oil temperature ( over 80℃ ) Discoloration of Seals to dark brown Scratches on Seals due to inflow of particles Damage caused by not carrying on warming ups in the beginning of operating Hammer Inverted Seals Free Repair Oil leaks or Gas leaks when Piston and Cylinder are normal HydroRam .055 Reject limit of dimension(A') A' mm 22 28 28 28 28 34 57 86 87 86 94 94 94 99 inch 0.897 6) SEAL KIT : Oil Leaks. Cuts.386 3.181 1.102 1.425 3.102 1.181 1.944 1.819 3.362 3.386 3.244 3.457 2. Abrasion (Scratches).BHI 5) Retainer Pin Model HK10 HK20 HK30 HK40 HK45 HK60 HK80 HK130 HK220 HK250 HK280 HK330 HK380 HK500 Dimension(A) of new part A mm 24 30 30 30 30 37 60 89 90 89 97 97 97 103 inch 0.102 1.701 3.819 3.701 3.334 2.181 1.102 1.