2003 CHRYSLER CARAVAN manual transmission

(3) Install intermediate shaft bearing race to case
with an arbor press, driver handle C-4171, and
installer 8471 (Fig. 49). Press until installer 8471
bottoms on transaxle case.
NOTE: If input shaft assembly was not disassem-
bled, it is necessary to remove input shaft sealed
ball bearing before assembling transaxle. (Refer to
21 - TRANSMISSION/TRANSAXLE/MANUAL/INPUT
SHAFT - DISASSEMBLY)
(4) Install assembled input and intermediate
shafts to fixture 8487 (Fig. 50).(5) Install shift forks and 3/4 rail assembly to
geartrain as shown in (Fig. 51).
NOTE: Before installing geartrain, make sure that
input shaft sealed roller bearing is not installed,
otherwise reverse idler assembly installation will be
difficult. (Refer to 21 - TRANSMISSION/TRANSAXLE/
MANUAL/INPUT SHAFT - DISASSEMBLY)
Fig. 49 Install Intermediate Shaft Bearing Race
1 - ARBOR PRESS
2 - DRIVER HANDLE C-4171
3 - INSTALLER 8471
4 - INTERMEDIATE SHAFT BEARING RACEFig. 50 Install Geartrain to Fixture 8487
1 - INTERMEDIATE SHAFT
2 - INPUT SHAFT
2 - FIXTURE 8487
RST850 MANUAL TRANSAXLE21-43
T850 MANUAL TRANSAXLE (Continued)
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(23) Install back up lamp switch and torque to 23
N´m (17 ft. lbs.) (Fig. 66).
(24) Roll transaxle assembly on side.
(25) Install differential chip collector magnet (Fig.
67). Retain to case with a dab of MopartGear Lube
RTV.
(26) Install differential assembly with bearing
races and select shim (Fig. 68). Shim selection was
determined before transaxle assembly (Refer to 21 -
TRANSMISSION/TRANSAXLE/MANUAL/DIFFER-
ENTIAL - ADJUSTMENTS).
(27) Installa1mm(0.04 in.) bead of MopartGas-
ket Maker to differential cover and install to case.
Torque differential cover-to-case bolts to 54 N´m (40
ft. lbs.).(28) Installa1mm(0.04 in.) bead of MopartGas-
ket Maker to extension housing. Install extension
housing to differential cover and case and torque
bolts to 28 N´m (250 in. lbs.) (Fig. 69).
Fig. 66 Back-Up Lamp Switch
1 - BACK-UP LAMP SWITCH
Fig. 67 Differential Magnet
1 - MAGNET
Fig. 68 Differential Shim/Slinger Orientation
1 - SLINGER
2 - BEARING RACE
3 - DIFFERENTIAL ASSEMBLY
4 - SHIM (SELECT)
Fig. 69 Extension Housing-to-Case Bolts
1 - EXTENSION HOUSING
21 - 48 T850 MANUAL TRANSAXLERS
T850 MANUAL TRANSAXLE (Continued)
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SPECIFICATIONS - T850 MANUAL TRANSAXLE
GENERAL SPECIFICATIONS
DESCRIPTION SPECIFICATION
Transaxle TypeConstant-mesh, fully synchronized 5-speed with integral
differential
Lubrication MethodSplash oil collected in case passage and oil trough and
distributed to mainshafts via gravity
Fluid Type ATF+4 (Automatic Transmission FluidÐType 9602)
GEAR RATIOS
GEAR RATIO (2.4L Gas) RATIO (2.5L TD)
1st 3.65 3.65
2nd 2.05 2.05
3rd 1.39 1.37
4th 1.03 0.97
5th 0.83 0.76
Reverse 3.47 3.47
Final Drive Ratio 3.77 3.77
Overall Top Gear 3.12 2.67
INPUT SHAFT
BLOCKER RING WEAR GAP
3rd Gear 0.856-1.539 mm (0.0338-0.0606 in.)
4th Gear 0.762-1.631 mm (0.030-0.064 in.)
GEAR END PLAY
3rd Gear 0.099-0.505 mm (0.004-0.020 in.)
4th Gear 0.048-0.457 mm (0.002-0.018 in.)
21 - 56 T850 MANUAL TRANSAXLERS
T850 MANUAL TRANSAXLE (Continued)
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AXLE SEALS
REMOVAL
(1) Raise vehicle on hoist.
(2) Remove one or both front halfshaft assemblies.
(Refer to 3 - DIFFERENTIAL & DRIVELINE/HALF
SHAFT - REMOVAL)
(3) Using a suitable screwdriver, remove one or
both axle seals (Fig. 92).
INSTALLATION
(1) Using driver handle C-4171 and installer 8476,
install axle seals into position (Fig. 93) (Fig. 94).
(2) Install one or both front halfshaft assemblies.
(Refer to 3 - DIFFERENTIAL & DRIVELINE/HALF
SHAFT - INSTALLATION)
(3) Check transaxle fluid level and adjust if neces-
sary. (Refer to 21 - TRANSMISSION/TRANSAXLE/
MANUAL/FLUID - STANDARD PROCEDURE)
(4) Lower vehicle.
Fig. 92 Axle Seal Removal (Extension Housing Side
Shown)
1 - SCREWDRIVER
2 - AXLE SEAL
3 - EXTENSION HOUSING
Fig. 93 Axle Seal InstallationÐTypical
1 - SEAL
2 - INSTALLER 8476
3 - DRIVER HANDLE C-4171
Fig. 94 Axle Seal Installation (Extension Housing
Side)
1 - EXTENSION HOUSING
2 - SEAL
3 - INSTALLER 8476
4 - DRIVER HANDLE C-4171
RST850 MANUAL TRANSAXLE21-61
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(13) Install tapered roller bearings using installer
8473 and an arbor press (Fig. 122). Insert button
8491 on opposite journal to protect journal and/or
bearing during press operation. Repeat the same
operation on opposite side.
(14) Measure and verify differential side gear end
play. (Refer to 21 - TRANSMISSION/TRANSAXLE/
MANUAL/DIFFERENTIAL - ADJUSTMENTS).
ADJUSTMENTS
ADJUSTMENT - DIFFERENTIAL TURNING
TORQUE
NOTE: Differential turning torque should only be
measured with the geartrain out of the transaxle. If
measurement is taken with transaxle assembled, an
inaccurate measurement will result.
NOTE: All differential cover-to-case bolts and exten-
sion housing-to-case bolts must be installed and
torqued to obtain accurate measurement.(1) If transaxle is assembled, remove geartrain
and leave differential in place. (Refer to 21 - TRANS-
MISSION/TRANSAXLE/MANUAL - DISASSEMBLY)
(2) Install differential cover and torque differential
cover-to-case bolts to 54 N´m (40 ft. lbs.).
(3) Install extension housing and torque extension
housing-to-case bolts to 28 N´m (250 in. lbs.).
(4) Place transaxle on work bench so axle center-
line is parallel to the ground.
(5) Install turning torque tool C-4995 to differen-
tial at side opposite extension housing.
(6) Using in. lb./N´m dial indicator, rotate differen-
tial case multiple times and record measurement
(Fig. 123). Differential turning torque should be
within 2.3-3.4 N´m (20-30 in. lbs.). Refer to shim
chart for proper shim selection. If turning torque
measured is less than 2.3 N´m (20 in. lbs.), install a
thicker shim. If turning torque measured is greater
than 3.4 N´m (30 in. lbs.), install a thinner shim.
Fig. 122 Differential Side Bearing Installation
1 - ARBOR PRESS
2 - INSTALLER 8473
3 - BEARING
4 - BUTTON 8491
Fig. 123 Differential Turning Torque Measurement
1 - DIAL TORQUE WRENCH
2 - TOOL C-4995
RST850 MANUAL TRANSAXLE21-69
DIFFERENTIAL (Continued)
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If end play measurement indicates a thrust washer
change is necessary, the differential must be disas-
sembled. (Refer to 21 - TRANSMISSION/TRANS-
AXLE/MANUAL/DIFFERENTIAL - DISASSEMBLY)FLUID
STANDARD PROCEDURE
STANDARD PROCEDURE - FLUID LEVEL
CHECK
NOTE: For proper fluid level check intervals, (Refer
to LUBRICATION & MAINTENANCE/MAINTENANCE
SCHEDULES - DESCRIPTION)
The fluid required in this transaxle is Mopart
ATF+4. Use of substitute fluids may result in
improper transaxle operation and/or failure.
(1) Raise vehicle on hoist.
(2) Remove transaxle fill plug (Fig. 126).
(3) Inspect fluid level. Fluid should be within 3/16º
below fill hole. Add MopartATF+4 as neccessary.
(4) Install fill plug, ensuring it is properly seated.
(5) Lower vehicle.
STANDARD PROCEDURE - FLUID DRAIN AND
FILL
NOTE: For proper fluid change intervals, (Refer to
LUBRICATION & MAINTENANCE/MAINTENANCE
SCHEDULES - DESCRIPTION)
The fluid required in this transaxle is Mopart
ATF+4. Use of substitute fluids may result in
improper transaxle operation and/or failure.
Fig. 124 Side Gear End Play Measurement
1 - FEELER GAUGE
Fig. 125 Available Side Gear Thrust Washers
1 - (PLAIN) 0.79-0.84 mm (0.031-0.033 in.)
2 - ( TRIANGLE) 0.91-0.97 mm (0.036-0.038 in.)
3 - (SQUARE) 1.04-1.10 mm (0.041-0.043 in.)
4 - (DIAMOND) 1.17-1.22 mm (0.046-0.048 in.)
Fig. 126 Transaxle Fill Plug
1 - FILL PLUG
2 - END COVER
RST850 MANUAL TRANSAXLE21-71
DIFFERENTIAL (Continued)
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41TE AUTOMATIC TRANSAXLE
TABLE OF CONTENTS
page page
41TE AUTOMATIC TRANSAXLE
DESCRIPTION........................117
OPERATION..........................119
DIAGNOSIS AND TESTING
DIAGNOSIS AND TESTING - 41TE
TRANSAXLE GENERAL DIAGNOSIS......119
DIAGNOSIS AND TESTING - ROAD TEST . . 119
DIAGNOSIS AND TESTING - HYDRAULIC
PRESSURE TESTS...................120
DIAGNOSIS AND TESTING - CLUTCH AIR
PRESSURE TESTS...................122
DIAGNOSIS AND TESTING - TORQUE
CONVERTER HOUSING FLUID LEAKAGE . . 123
REMOVAL............................124
DISASSEMBLY........................125
ASSEMBLY...........................144
INSTALLATION........................166
SCHEMATICS AND DIAGRAMS
41TE TRANSAXLE HYDRAULIC
SCHEMATICS.......................169
SPECIFICATIONS - 41TE TRANSAXLE......181
SPECIAL TOOLS
41TE AUTOMATIC TRANSAXLE.........183
ACCUMULATOR
DESCRIPTION........................188
OPERATION..........................189
AUTOSTICK SWITCH
DESCRIPTION........................189
OPERATION..........................189
DRIVING CLUTCHES
DESCRIPTION........................190
OPERATION..........................190
FINAL DRIVE
DISASSEMBLY........................190
ASSEMBLY...........................195
ADJUSTMENTS
ADJUSTMENT - DIFFERENTIAL BEARING
PRELOAD..........................199
FLUID
STANDARD PROCEDURE
FLUID LEVEL AND CONDITION CHECK . . . 201
STANDARD PROCEDURE - FLUID AND
FILTER SERVICE.....................203
GEAR SHIFT CABLE
REMOVAL............................204
INSTALLATION........................205
ADJUSTMENTS
GEARSHIFT CABLE ADJUSTMENT.......206HOLDING CLUTCHES
DESCRIPTION........................207
OPERATION..........................207
INPUT CLUTCH ASSEMBLY
DISASSEMBLY........................208
ASSEMBLY...........................216
OIL PUMP
DESCRIPTION........................230
OPERATION..........................230
DISASSEMBLY........................230
ASSEMBLY...........................232
PLANETARY GEARTRAIN
DESCRIPTION........................232
OPERATION..........................232
SEAL - OIL PUMP
REMOVAL............................232
INSTALLATION........................233
SHIFT INTERLOCK SOLENOID
DESCRIPTION........................233
OPERATION..........................233
DIAGNOSIS AND TESTING - BRAKE/
TRANSMISSION SHIFT INTERLOCK
SOLENOID..........................235
REMOVAL............................235
INSTALLATION........................236
SOLENOID/PRESSURE SWITCH ASSY
DESCRIPTION........................237
OPERATION..........................237
REMOVAL............................238
INSTALLATION........................239
SPEED SENSOR - INPUT
DESCRIPTION........................239
OPERATION..........................240
REMOVAL............................240
INSTALLATION........................240
SPEED SENSOR - OUTPUT
DESCRIPTION........................241
OPERATION..........................241
REMOVAL............................241
INSTALLATION........................242
TORQUE CONVERTER
DESCRIPTION........................242
OPERATION..........................245
REMOVAL............................247
INSTALLATION........................247
TRANSMISSION CONTROL RELAY
DESCRIPTION........................247
OPERATION..........................248
21 - 116 41TE AUTOMATIC TRANSAXLERS
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TRANSMISSION RANGE SENSOR
DESCRIPTION........................248
OPERATION..........................248
REMOVAL............................249
INSTALLATION........................249
TRD LINK
DESCRIPTION........................249
OPERATION..........................249VALVE BODY
DESCRIPTION........................250
OPERATION..........................250
REMOVAL............................251
DISASSEMBLY........................252
ASSEMBLY...........................257
INSTALLATION........................262
41TE AUTOMATIC
TRANSAXLE
DESCRIPTION
The 41TE (Fig. 1) is a four-speed transaxle that is
a conventional hydraulic/mechanical assembly with
an integral differential, and is controlled with adap-
tive electronic controls and monitors. The hydraulic
system of the transaxle consists of the transaxle
fluid, fluid passages, hydraulic valves, and various
line pressure control components. An input clutch
assembly which houses the underdrive, overdrive,
and reverse clutches is used. It also utilizes separate
holding clutches: 2nd/4th gear and Low/Reverse. The
primary mechanical components of the transaxle con-
sist of the following:
²Three multiple disc input clutches
²Two multiple disc holding clutches
²Four hydraulic accumulators
²Two planetary gear sets
²Hydraulic oil pump
²Valve body
²Solenoid/Pressure switch assembly
²Integral differential assemblyControl of the transaxle is accomplished by fully
adaptive electronics. Optimum shift scheduling is
accomplished through continuous real-time sensor
feedback information provided to the Powertrain
Control Module (PCM) or Transmission Control Mod-
ule (TCM).
The PCM/TCM is the heart of the electronic control
system and relies on information from various direct
and indirect inputs (sensors, switches, etc.) to deter-
mine driver demand and vehicle operating condi-
tions. With this information, the PCM/TCM can
calculate and perform timely and quality shifts
through various output or control devices (solenoid
pack, transmission control relay, etc.).
The PCM/TCM also performs certain self-diagnos-
tic functions and provides comprehensive information
(sensor data, DTC's, etc.) which is helpful in proper
diagnosis and repair. This information can be viewed
with the DRB scan tool.
RS41TE AUTOMATIC TRANSAXLE21 - 117
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