AW50-40.AW50-42

AW 50-40, 50-42, 50-42LE: AF 14, 20, 22Transmission Identification Plate 1208 818 Example: 50-42LE = Transmission designation 1208818 = Volvo P/N 95 = Year of manufacture F = Manufactured in June (A=January and so on. NOTE! The letter I is not used.) W = Transmission 50-42LE* 8 = Transmission manufactured for Volvo 1243 = Manufacturing number, starting with 0001 each month. *) LE indicates that the transmisson has the lock-up function and is electronically controlled. This transmission is an AW50-42, manufactured in June 1995. 50-42 95 F W 8 1243 POSITION S1 S2 C1 C2 C3 B1 B2 B3 B4 F1 F2 F3 Applied Elements B2 = Intermediate Clutch B3 = Low & Reverse Clutch B4 = Underdrive Brake Band C1 = Forward Clutch C2 = Direct Clutch C3 = Underdrive Clutch F1 = Intermediate Sprag F2 = Low Sprag F3 = Underdrive Sprag S1 = Shift Solenoid A S2 = Shift Solenoid B P R N Parking Reverse Neutral 1st 2nd D 3rd 4th 1st 3 2nd 3rd L 1st 2nd Caution: This kit contains a Duraprene valve body cover gasket. This gasket is intended to be used on covers that are not used in conjunction with a transmission mount. The torsional loads placed on the gasket surfaces will result in a leak on this application. It is recommended to use a sealer in place of the gasket. 94659 31 -2- .035" Line Pressures At idle (800 -850 rpm): 60 .. Measure length of piston stem protruding from case..2300 765 .. Underdrive Clutch Underdrive Brake Band Procedure: Install piston in reverse order of disassembly.Pressure Control Resistance between the solenoid pins 0 (32) 20 (68) Oil Temperature Sensor Temperature °C (°F) 40 (104) 80 (176) 100 (212) 150 (302) Resistance between the solenoid pin and the solenoid cover/ transmission housing Remarks Resistance ( ) 300 .15 10 .15 10 .276" with 4 plates with 3 plates with 4 plates with 3 plates with 4 plates with 3 plates At stall: 170 . Line pressures for all engine models..143 64 .074" ..216" ..276".095" .058" Underdrive Brake Band . Apply air to servo and re-measure length of piston stem. Adjust as needed.216" .15 2-6 1700 .074" .058" . Resistance for Components Component Engine Speed RPM Sensor Solenoid A Solenoid B Solenoid Lock-up Solenoid .045" . All pressure readings taken in Drive or Reverse.073" .057" .Clutch Clearances Overrun Clutch Intermediate Clutch Low/Reverse Clutch Forward Clutch . Specification is ..058" .015" .85 psi at idle.045" ..600 10 .074" Direct Clutch .86 23 .023" ..460 107 .060" ..060" .256 psi. The difference is the piston stroke length.1035 340 .045" .060" ..074" . Notes: Stall speeds vary with engine model..045" . End Play = . 4 / 0. the seal should be pressed in until it bottoms in the bore. but not all.4 / 0.6 (85 / 57) 0.Checking System Pressure Depress brake pedal. Toyota pumps feature a deep lead-in chamfer on the pump seal bore. Checking Kickdown Switch Resistance The ohmmeter should read approx.6 (85 / 57) 0. To ensure proper contact between the seal and the seal bore. This may result in the seal being installed below the top of the pump bore face.6 (85 / 57) 0.6 (85 / 57) B5202 B5204S 800 D/R B5254S1 8501 D/R B5252S 850 D/R B5234S 850 D/R Checking Oil Temperature Sensor Resistance Connect an ohmmeter between the transmission connector terminals 12 and 13 (transmission side).4 / 0.4 / 0.4 / 0. model years 1992-1993 Correct Installation Lead In Chamfer Pump Seal Installation Some. B5234T 850 D/R 1) 800 rpm.6 (85 / 57) 0. Move gear selector into the various positions and record system pressure. 0 Ω with the accelarator pedal (AP) fully depressed and infinite resistance in all other positions. Full Contact Between Metal Case and Pump Bore Pump Body Rubber Nose on Seal Full Contact Between Rubber Nose and bottom of Bore Incorrect Installation Lead In Chamfer Poor Contact Between Metal Case and Pump Body Pump Body Rubber Nose on Seal No Contact Between Rubber Nose and bottom of Bore -3- .6 (85 / 57) 0. This should be standard procedure on all seals that use a nose gasket for bore sealing.4 / 0. AW TCM 50-42 System Pressure Engine Idling Speed Gear Position Line Pressure (rpm) (MPa) (psi) 850 D/R 0. Table. "Front" Side Large Filter Screen 4 Small Filter Screens Requires Four Rubber Checkballs 5.0mm (.Speed Sensors Volvo/Saab AW50-42LE "Rear" Valve Body.197" In Diameter Copyright © 1998 ATSG Copyright © 1998 ATSG -4- . "Rear" Side Pressure Relief Valve and Spring Check Valve and Spring Volvo/Saab AW50-42LE "Center" Valve Body. 197" In Diameter Copyright © 1998 ATSG -5- . "Rear" Side Check Valve Assembly Bypass Valve and Spring If the spacer plate has only one small hole over either location DO NOT install a checkball This checkball can go in either location indicated by the arrows. Requires Four Rubber Checkballs 5. Check Valve and Spring If the spacer plate has one large and one small hole over location INSTALL a checkball.0mm (.Volvo/Saab AW50-42LE "Center" Valve Body. Rear Valve Body Accumulator Pistons Underdrive Accumulator Piston Solenoid B Direct Clutch Accumulator Piston Intermediate Accumulator Piston Note: Illustration for reference only. Valves and springs may vary between makes and models Front Valve Body Solenoid Location Lock-Up Solenoid Pressure Control Solenoid Shift Solenoid A Shift Solenoid B -6- . Overrun Hub Freewheels Clockwise. Locks Counterclockwise Low/Reverse Clutch Held Freewheels Counterclockwise.Air Check Passages Sprag Rotation Low Sprag Freewheel Counterclockwise. Lock Clockwise Outer Hub Held Overrun Clutch Intermediate Clutch Intermediate Sprag Intermediate Hub Direct Clutch Forward Clutch Overrun Hub With Intermediate Hub Held. Locks Clockwise 7 . Forward Accumulator 2nd Brake Clutch Underdrive Clutch Low Sprag Direct Clutch Underdrive Brake Intermediate Sprag Forward Clutch Underdrive Brake Accumulator Overrun Clutch Underdrive Sprag SOME OF THE INFORMATION IN THIS BOOKLET MAY HAVE BEEN PROVIDED OR APPROVED BY THE AUTOMATIC TRANSMISSION SERVICE GROUP AND/OR THE AUTOMATIC TRANSMISSION REBUILDERS ASSOCIATION. . WE ARE NOT RESPONSIBLE FOR ANY INACCURACIES OR WARRANTY CLAIMS WHICH MAY RESULT FROM THE USE OF THIS INFORMATION. THE INFORMATION CONTAINED HEREIN IS ACCURATE TO THE BEST OF OUR KNOWLEDGE.