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42RLE Automatic Transmission - Service Information: Specifications RAM Pickup 2500

Automatic Trans 16 illustrations ~624 words

SPECIFICATIONS

Transmission information typeGeneral Information
Transmission TypeFour-Speed Automatic, Electronically Controlled, Fully Adaptive, Electronically Modulated Torque Converter
Lubrication MethodPump (internal - external gear-type)
Cooling MethodWater Heat Exchanger and/or Air-to-Oil Heat Exchanger

GENERAL SPECIFICATIONS

GearGear Ratio
1st Gear2.84:1
2nd Gear1.57:1
3rd Gear (Direct)1.00:1
4th Gear (Overdrive)0.69:1
Reverse Gear2.21:1

GEAR RATIOS

DescriptionMetricStandard
Output Shaft0.22-0.903 N.m1-8 in. lbs.

BEARING PRELOAD (Drag Torque)

DescriptionMetricStandard
Low/Reverse Clutch (Select Reaction Plate)0.84-1.60 mm0.033-0.063 in.
Two/Four Clutch (No Select)0.76-2.64 mm0.030-0.104 in.
Reverse Clutch (Select Snap Ring)0.89-1.37 mm0.035-0.054 in.
Overdrive Clutch (No Select)1.07-3.25 mm0.042-0.128 in.
Underdrive Clutch (Select Reaction Plate)0.94-1.50 mm0.037-0.059 in.

CLUTCH PACK

DescriptionMetricStandard
End Play0.127-0.635 mm0.005-0.025 in.

INPUT SHAFT

DESCRIPTIONMETRICSTANDARD
Outer Gear-to-Crescent0.060-0.298 mm0.0023-0.0117 in.
Inner Gear-to-Crescent0.093-0.385 mm0.0036-0.0151 in.
Outer Gear-to-Pocket0.089-0.202 mm0.0035-0.0079 in.
Outer Gear Side Clearance0.020-0.046 mm0.0008-0.0018 in.
Inner Gear Side Clearance0.020-0.046 mm0.0008-0.0018 in.
Reaction Shaft Support Bearing Sleeve45.22 - 45.23 mm1.780 - 1.781 in.

OIL PUMP CLEARANCES

DescriptionMetricStandard
Front Sun Gear Bushings29.55 - 29.60 mm1.163 -1.165 in.
Rear Carrier Bushing29.75 - 30.00 mm1.171 - 1.181 in.
Overdrive Hub / Shaft Bushing21.52 - 21.58 mm0.847 - 0.850 in.
Oil Pump Reaction Support Sleeve45.27 - 45.31 mm1.782 - 1.784 in.
Front / Rear Carrier Pinion end Play0.15 - 0.61 mm0.006 - 0.024 in.
Torque Converter Hub Bushing38.019 - 38.111.499 - 1.501 in.

GEAR TRAIN MEASUREMENTS

DescriptionN.mFt. Lbs.In. Lbs.
Bolt, Torque Converter Housing to Engine6850
Bolt, Converter-to-Driveplate8865
Bolt, Fluid Filter-to-Valve Body545
Bolt, L/R Piston Retainer-to-Case545
Bolt, Adapter/Extension Housing5440
Bolt, Manual Valve Lever-to-Manual Valve545
Bolt, Oil Pan-to-Case2014.5
Bolt, Oil Pump-to-Case30265
Bolt, Park Sprag Retainer4.540
Bolt, Reaction Shaft Support Halves28250
Screw, Solenoid/Pressure Switch Assembly-to-Valve Body5.550
Bolt, Valve Body-to-Case12105
Bolt, Valve Body-to-Transfer Plate545
Fitting, Cooler Line47.535
Nut, Output Shaft271200
Plug, Pressure Tap545
Bolt, Input Speed-to-Case Sensor980
Bolt, Output Speed-to-Case Sensor980
Bolt, Crossmember to Frame6850
Bolt, Rear Support to Transmission4735
Bolt, Clevis Bracket to Crossmember4735
Bolt, Clevis Bracket to Transmission6850
Screw, TRS/Manual Shaft Retaining545
Screw, 2/4 Accumulator Retainer Plate545

TORQUE SPECIFICATIONS

Scheme 321

Scheme 321: 42RLE - WITH VARIABLE LINE PRESSURE
Scheme 321: 42RLE - WITH VARIABLE LINE PRESSURE

Scheme 322

Scheme 322
Scheme 322

Scheme 323

Scheme 323
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Scheme 324

Scheme 324
Scheme 324

Scheme 325

Scheme 325
Scheme 325

Scheme 326

Scheme 326
Scheme 326

Scheme 327

Scheme 327
Scheme 327

Scheme 328

Scheme 328
Scheme 328

Scheme 329

Scheme 329
Scheme 329

Scheme 330

Scheme 330: REMOVAL
Scheme 330: REMOVAL

Scheme 331

Scheme 331
Scheme 331

Scheme 332

Scheme 332
Scheme 332

Scheme 333

Scheme 333
Scheme 333

Scheme 334

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Scheme 335

Scheme 335
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Scheme 336

Scheme 336
Scheme 336
  1. Disconnect the negative battery cable.
  2. Raise and support the vehicle
  3. Remove any necessary skid plates (2). 1 - INPUT SPEED SENSOR 2 - OUTPUT SPEED SENSOR 3 - SHIFT MOTOR AND MODE SENSOR ASSEMBLY 4 - VARIABLE LINE PRESSURE CONNECTOR 5 - TRANSMISSION RANGE SENSOR
  4. Mark propeller shaft and axle companion flanges for assembly alignment.
  5. Remove the rear propeller shaft. Refer to «SHAFT, Drive, Rear Light Duty , Removal.»(ref-457778-S35273603822012030200000)
  6. Remove the front propeller shaft, if necessary. Refer to «SHAFT, Drive, Front Light Duty , Removal»(ref-457778-S29911207512012030200000) .
  7. Disconnect the input (1) and output (2) speed sensors.
  8. Disconnect the transfer case shift motor and mode sensor assembly (3).
  9. Disconnect the variable line pressure connector (4) from the transmission, if equipped.
  10. Disconnect the transmission range sensor (5). 1 - SOLENOID/PRESSURE SWITCH ASSEMBLY CONNECTOR
  11. Disconnect wires (1) from the solenoid/pressure switch assembly.
  12. Disconnect the connectors for the oxygen sensors.
  13. Remove the bolts (2) holding the exhaust crossover pipe to the pipe flanges.
  14. Loosen the clamp (4) that holds the crossover pipe to the exhaust pipe (5).
  15. Remove crossover pipe (6). 1 - GEARSHIFT CABLE 2 - CABLE SUPPORT BRACKET 3 - MANUAL VALVE LEVER
  16. Disconnect gearshift cable (1) from transmission manual valve lever (3).
  17. Disengage the shift cable (1) from the cable support bracket (2). 1 - CROSSMEMBER 2 - REAR TRANSMISSION MOUNT
  18. Remove the starter motor.
  19. Remove the engine to transmission collar.
  20. Rotate crankshaft in clockwise direction until converter bolts are accessible. Then remove bolts one at a time. Rotate crankshaft with socket wrench on dampener bolt.
  21. Disconnect the transmission vent hose from the transmission.
  22. Support rear of engine with safety stand or jack.
  23. Raise transmission slightly with service jack to relieve load on crossmember and supports.
  24. Remove bolts securing rear support and cushion to transmission and crossmember (1).
  25. Remove bolts attaching crossmember to frame and remove crossmember. 1 - TRANSMISSION COOLER LINES 2 - CLIPS 3 - COOLER LINE FITTINGS
  26. Disconnect transmission fluid cooler lines (1) at transmission fittings (3) and clips (2). NOTE: When disconnecting the transmission oil cooler lines, it is necessary to replace the line clip that is located on the oil pan stud. The retention force of the clip is severely degraded upon removal.
  27. Remove all remaining converter housing bolts.
  28. Carefully work transmission and torque converter assembly rearward off engine block dowels.
  29. Hold torque converter in place during transmission removal.
  30. Lower transmission and remove assembly from under the vehicle.
  31. To remove torque converter, carefully slide torque converter out of the transmission.

TORQUE CONVERTER CLUTCH (TCC)

In a standard torque converter, the impeller and turbine are rotating at about the same speed and the stator is freewheeling, providing no torque multiplication. By applying the turbine's piston and friction material to the front cover, a total converter engagement can be obtained. The result of this engagement is a direct 1:1 mechanical link between the engine and the transmission.

The clutch can be engaged in second, third, fourth, and fifth (if applicable) gear ranges depending on overdrive control switch position. If the overdrive control switch is in the normal ON position, the clutch will engage after the shift to fourth gear. If the control switch is in the OFF position, the clutch will engage after the shift to third gear.

The TCM controls the torque converter clutch via the L/R-CC Solenoid. There are four TCC operational modes

  1. No EMCC
  2. Partial EMCC
  3. Full EMCC
  4. Gradual-to-no EMCC

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