(11) Install transfer and separator plate to valve
body assembly (Fig. 327).
(12) Using Tool L-4553 or equivalent (Fig. 328),
install and torque valve body-to-transfer plate screws
(Fig. 329) to 5 N´m (40 in. lbs.) torque.(13) Install detent spring into position. Install and
torque detent spring-to-valve body screws to 5 N´m
(40 in. lbs.) torque (Fig. 330).
Fig. 327 Install Transfer Plate and Separator Plate to
Valve Body
1 - SEPARATOR PLATE
2 - TRANSFER PLATE
3 - OIL SCREEN
4 - VALVE BODY
Fig. 328 Using Tool L-4553 on Valve Body Screw
1 - SCREWDRIVER HANDLE
2 - VALVE BODY ASSEMBLY
3 - SPECIAL TOOL L-4553
Fig. 329 Install Valve Body-to-Transfer Plate Screws
1 - SCREWDRIVER HANDLE
2 - VALVE BODY SCREWS (16)
3 - VALVE BODY
4 - SPECIAL TOOL L-4553
Fig. 330 Detent Spring Attaching Screw and Spring
1 - SPECIAL TOOL L-4553
2 - DETENT SPRING SCREW
3 - SCREWDRIVER HANDLE
RS31TH AUTOMATIC TRANSAXLE21 - 157
VALVE BODY (Continued)
ProCarManuals.com
INSTALLATION
(1) Install valve body to transaxle. Position gover-
nor tubes into case (Fig. 331).
(2) Install valve body-to-case bolts (Fig. 332) and
torque to 12 N´m (105 in. lbs.).(3) Install cooler bypass valve and seal (Fig. 333).
(4) Install park rod to valve body and install e-clip
(Fig. 334) (Fig. 335).
Fig. 331 Valve Body and Governor Tubes
1 - VALVE BODY ASSEMBLY
2 - GOVERNOR TUBES
Fig. 332 Valve Body Attaching Bolts
1 - VALVE BODY
2 - VALVE BODY ATTACHING BOLTS (7)
3 - GOVERNOR TUBES
Fig. 333 Cooler Bypass Valve and Seal
1 - TRANSFER PLATE
2 - BYPASS VALVE
3 - SEAL
Fig. 334 Parking Rod
1 - VALVE BODY
2 - PARKING ROD
21 - 158 31TH AUTOMATIC TRANSAXLERS
VALVE BODY (Continued)
ProCarManuals.com
(8) Install and torque oil pan-to-transaxle bolts
(Fig. 339) to 19 N´m (165 in. lbs.).
(9) Lower vehicle.
(10) Connect torque converter clutch solenoid.
(11) Connect gearshift cable to manual valve lever.
(12) Connect throttle valve cable to throttle valve
lever at transaxle.
(13) Connect battery negative cable.
ADJUSTMENTS
HYDRAULIC CONTROL PRESSURE
ADJUSTMENTS
LINE PRESSURE
An incorrect throttle pressure setting will cause incor-
rect line pressure readings even though line pressure
adjustment is correct. Always inspect and correct throttle
pressure adjustment before adjusting the line pressure.
The approximate adjustment for line pressure is 1-5/16
inches, measured from valve body to inner edge of adjust-
ing nut. However, due to manufacturing tolerances, the
adjustment can be varied to obtain specified line pres-
sure.
The adjusting screw may be turned with an Allen
wrench. One complete turn of adjusting screw
changes closed throttle line pressure approximately
1-2/3 psi. Turning adjusting screw counterclockwise
increases pressure, and clockwise decreases pressure.
THROTTLE PRESSURE
Throttle pressures cannot be tested accurately;
therefore, the adjustment should be measured if a
malfunction is evident.
(1) Insert gauge pin of Tool C-3763 between the
throttle lever cam and kickdown valve.(2) By pushing in on tool, compress kickdown
valve against its spring so throttle valve is com-
pletely bottomed inside the valve body.
(3) While compressing spring, turn throttle lever
stop screw with adapter C-4553. Turn until head of
screw touches throttle lever tang, with throttle lever
cam touching tool and throttle valve bottomed. Be
sure adjustment is made with spring fully com-
pressed and valve bottomed in the valve body.
VEHICLE SPEED SENSOR/
PINION GEAR
REMOVAL
(1)Remove harness connector from sensor (Fig. 340).
Be sure weather seal stays on harness connector.
(2) Remove bolt securing the sensor in the exten-
sion housing (Fig. 340) .
(3) Carefully pull sensor and pinion gear assembly
out of extension housing.
(4) Remove pinion gear from sensor (Fig. 340) .
(5) Inspect pinion gear for damage (missing teeth,
etc.) and replace as necessary.
NOTE: When removing vehicle speed sensor for
any reason, a new o-ring MUST be used.
INSTALLATION
(1) Install vehicle speed sensor and pinion gear to
extension housing with new o-ring (Fig. 340).
(2) Install bolt and torque to 7 N´m (60 in. lbs.).
(3) Connect connector.
(4) Lower vehicle.
Fig. 339 Transaxle Oil Pan Bolts
1 - TRANSAXLE OIL PAN
2 - OIL PAN BOLTS
Fig. 340 Vehicle Speed Sensor Removal/Installation
1 - CONNECTOR
2 - SPEEDO PINION
3 - O-RING
4 - SENSOR
21 - 160 31TH AUTOMATIC TRANSAXLERS
VALVE BODY (Continued)
ProCarManuals.com
41TE AUTOMATIC TRANSAXLE
TABLE OF CONTENTS
page page
41TE AUTOMATIC TRANSAXLE
DESCRIPTION........................162
OPERATION..........................164
DIAGNOSIS AND TESTING
DIAGNOSIS AND TESTING - 41TE
TRANSAXLE GENERAL DIAGNOSIS......164
DIAGNOSIS AND TESTING - ROAD TEST . . 165
DIAGNOSIS AND TESTING - HYDRAULIC
PRESSURE TESTS...................165
DIAGNOSIS AND TESTING - CLUTCH AIR
PRESSURE TESTS...................168
DIAGNOSIS AND TESTING - TORQUE
CONVERTER HOUSING FLUID LEAKAGE . . 168
REMOVAL............................169
DISASSEMBLY........................171
ASSEMBLY...........................190
INSTALLATION........................213
SCHEMATICS AND DIAGRAMS
41TE TRANSAXLE HYDRAULIC
SCHEMATICS.......................216
SPECIFICATIONS - 41TE TRANSAXLE......228
SPECIAL TOOLS
41TE AUTOMATIC TRANSAXLE.........230
ACCUMULATOR
DESCRIPTION........................236
OPERATION..........................236
AUTOSTICK SWITCH
DESCRIPTION........................237
OPERATION..........................237
DRIVING CLUTCHES
DESCRIPTION........................237
OPERATION..........................238
FINAL DRIVE
DISASSEMBLY........................238
ASSEMBLY...........................243
ADJUSTMENTS
ADJUSTMENT - DIFFERENTIAL BEARING
PRELOAD..........................246
FLUID
STANDARD PROCEDURE
FLUID LEVEL AND CONDITION CHECK . . . 249
STANDARD PROCEDURE - FLUID AND
FILTER SERVICE.....................250
GEAR SHIFT CABLE
REMOVAL............................251
INSTALLATION........................253
ADJUSTMENTS
GEARSHIFT CABLE ADJUSTMENT.......254
HOLDING CLUTCHES
DESCRIPTION........................255OPERATION..........................255
INPUT CLUTCH ASSEMBLY
DISASSEMBLY........................255
ASSEMBLY...........................263
OIL PUMP
DESCRIPTION........................272
OPERATION..........................272
STANDARD PROCEDURE - OIL PUMP
VOLUME CHECK.....................272
DISASSEMBLY........................273
ASSEMBLY...........................274
PLANETARY GEARTRAIN
DESCRIPTION........................274
OPERATION..........................274
SEAL - OIL PUMP
REMOVAL............................275
INSTALLATION........................275
SHIFT INTERLOCK SOLENOID
DESCRIPTION........................275
OPERATION..........................276
DIAGNOSIS AND TESTING - BRAKE/
TRANSMISSION SHIFT INTERLOCK
SOLENOID..........................277
REMOVAL............................277
INSTALLATION........................278
SOLENOID/PRESSURE SWITCH ASSY
DESCRIPTION........................279
OPERATION..........................280
REMOVAL............................280
INSTALLATION........................281
SPEED SENSOR - INPUT
DESCRIPTION........................281
OPERATION..........................282
REMOVAL............................282
INSTALLATION........................283
SPEED SENSOR - OUTPUT
DESCRIPTION........................283
OPERATION..........................283
REMOVAL............................284
INSTALLATION........................284
TORQUE CONVERTER
DESCRIPTION........................285
OPERATION..........................289
REMOVAL............................290
INSTALLATION........................290
TRANSMISSION CONTROL RELAY
DESCRIPTION........................291
OPERATION..........................291
TRANSMISSION RANGE SENSOR
DESCRIPTION........................291
RS41TE AUTOMATIC TRANSAXLE21 - 161
ProCarManuals.com
Fig. 1 41TE Transaxle
1 - CASE 7 - LOW/REVERSE CLUTCH 13 - DIFFERENTIAL
2 - INPUT SPEED SENSOR 8 - OUTPUT SPEED SENSOR 14 - OIL PUMP
3 - UNDERDRIVE CLUTCH 9 - PLANETARY GEAR SET 15 - TORQUE CONVERTER
4 - OVERDRIVE CLUTCH 10 - OUTPUT SHAFT GEAR 16 - TORQUE CONVERTER CLUTCH
5 - REVERSE CLUTCH 11 - TRANSFER SHAFT
6 - 2/4 CLUTCH 12 - TRANSFER SHAFT GEAR
RS41TE AUTOMATIC TRANSAXLE21 - 163
41TE AUTOMATIC TRANSAXLE (Continued)
ProCarManuals.com
form a road test to determine if the problem has been
corrected or that more diagnosis is necessary. If the
problem persists after the preliminary tests and cor-
rections are completed, hydraulic pressure checks
should be performed.
DIAGNOSIS AND TESTING - ROAD TEST
Prior to performing a road test, verify that the
fluid level, fluid condition, and linkage adjustment
have been approved.
During the road test, the transaxle should be oper-
ated in each position to check for slipping and any
variation in shifting.
If the vehicle operates properly at highway speeds,
but has poor acceleration, the converter stator over-running clutch may be slipping. If acceleration is nor-
mal, but high throttle opening is needed to maintain
highway speeds, the converter stator clutch may
have seized. Both of these stator defects require
replacement of the torque converter and thorough
transaxle cleaning.
Slipping clutches can be isolated by comparing the
ªElements in Useº chart with clutch operation
encountered on a road test. This chart identifies
which clutches are applied at each position of the
selector lever.
A slipping clutch may also set a DTC and can be
determined by operating the transaxle in all selector
positions.
ELEMENTS IN USE AT EACH POSITION OF SELECTOR LEVER
Shift Lever
PositionINPUT CLUTCHES HOLDING CLUTCHES
Underdrive Overdrive Reverse 2/4 Low/Reverse
P - PARKX
R - REVERSE X X
N - NEUTRALX
OD -
OVERDRIVE
First XX
Second X X
Direct X X
Overdrive X X
D - DRIVE*
First XX
Second X X
Direct X X
L - LOW*
First XX
Second X X
Direct X X
* Vehicle upshift and downshift speeds are increased when in these selector positions.
The process of elimination can be used to detect
any unit which slips and to confirm proper operation
of good units. Road test analysis can diagnose slip-
ping units, but the cause of the malfunction cannot
be determined. Practically any condition can be
caused by leaking hydraulic circuits or sticking
valves.
DIAGNOSIS AND TESTING - HYDRAULIC
PRESSURE TESTS
Pressure testing is a very important step in the
diagnostic procedure. These tests usually reveal the
cause of most hydraulic transaxle problems.
Before performing pressure tests, be certain that
fluid level and condition, and shift cable adjustments
have been checked and approved. Fluid must be at
operating temperature (150 to 200 degrees F.).
RS41TE AUTOMATIC TRANSAXLE21 - 165
41TE AUTOMATIC TRANSAXLE (Continued)
ProCarManuals.com
Install an engine tachometer, raise vehicle on hoist
which allows front wheels to turn, and position
tachometer so it can be read.
Attach 300 psi gauge (C-3293SP) to port(s)
required for test(s) being conducted. Use adapter set
L-4559 to adapt gauge(s) to transaxle.
Test port locations are shown in (Fig. 4).
TEST ONE-SELECTOR IN LOW (1st GEAR)
(1) Attach pressure gauge to the low/reverse clutch
tap.
(2) Move selector lever to the (L) position.
(3) Allow vehicle wheels to turn and increase
throttle opening to achieve an indicated vehicle speed
to 20 mph.
(4) Low/reverse clutch pressure should read 115 to
145 psi.
(5) This test checks pump output, pressure regula-
tion and condition of the low/reverse clutch hydraulic
circuit and shift schedule.
TEST TWO-SELECTOR IN DRIVE (2nd GEAR)
NOTE: This test checks the underdrive clutch
hydraulic circuit as well as the shift schedule.
(1) Attach gauge to the underdrive clutch tap.
(2) Move selector lever to the 3 position.
(3) Allow vehicle wheels to turn and increase
throttle opening to achieve an indicated vehicle speed
of 30 mph.
(4) In second gear the underdrive clutch pressure
should read 110 to 145 psi.
TEST TWO A±SELECTOR IN OD (4th Gear)
NOTE: This test checks the underdrive clutch
hydraulic circuit as well as the shift schedule.
(1) Attach gauge to the underdrive clutch tap.
(2) Move selector lever to the (OD) position.
(3) Allow wheels to rotate freely and increase
throttle opening to achieve an indicated speed of 40
mph.
(4) Underdrive clutch pressure should read below
5 psi. If not, then either the solenoid assembly or
TCM is at fault.
TEST THREE-OVERDRIVE CLUTCH CHECK (3rd and
2nd Gear)
(1) Attach gauge to the overdrive clutch tap.
(2) Move selector lever to the (OD) position.
(3) Allow vehicle wheels to turn and increase
throttle opening to achieve an indicated vehicle speed
of 20 mph. Vehicle should be in 3rd gear.
(4) Overdrive clutch pressure should read 74 to 95
psi.
(5) Move selector lever to the (3) position and
increase indicated vehicle speed to 30 mph.
(6) The vehicle should be in second gear and over-
drive clutch pressure should be less than 5 psi.
(7) This test checks the overdrive clutch hydraulic
circuit as well as the shift schedule.
TEST FOUR-SELECTOR IN OVERDRIVE (4th Gear)
(1) Attach gauge to the 2/4 clutch tap.
(2) Move selector lever to the (OD) position.
(3) Allow vehicle front wheels to turn and increase
throttle opening to achieve an indicated vehicle speed
of 30 mph. Vehicle should be in 4th gear.
(4) The 2/4 clutch pressure should read 75 to 95
psi.
(5) This test checks the 2/4 clutch hydraulic cir-
cuit.
TEST FIVE-SELECTOR IN OVERDRIVE (4th Gear-CC
on)
(1) Attach gauge to the torque converter clutch off
pressure tap.
(2) Move selector lever to the (OD) position.
(3) Allow vehicle wheels to turn and increase
throttle opening to achieve an indicated vehicle speed
of 50 mph. Vehicle should be in 4th gear, CC on.
CAUTION: Both wheels must turn at the same
speed.
(4) Torque converter clutch off pressure should be
less than 5 psi.
(5) This test checks the torque converter clutch
hydraulic circuit.
Fig. 4 Pressure Taps
1 - OVERDRIVE CLUTCH
2 - TORQUE CONVERTER OFF
3 - LOW/REVERSE CLUTCH
4 - 2/4 CLUTCH
5 - REVERSE CLUTCH
6 - UNDERDRIVE CLUTCH
21 - 166 41TE AUTOMATIC TRANSAXLERS
41TE AUTOMATIC TRANSAXLE (Continued)
ProCarManuals.com
TEST SIX-SELECTOR IN REVERSE
(1) Attach gauges to the reverse and LR clutch
tap.
(2) Move selector lever to the (R) position.
(3) Read reverse clutch pressure with output sta-
tionary (foot on brake) and throttle opened to achieve
1500 rpm.
(4) Reverse and LR clutch pressure should read
165 to 235 psi.
(5) This test checks the reverse clutch hydraulic
circuit.
TEST RESULT INDICATIONS
(1) If proper line pressure is found in any one test,
the pump and pressure regulator are working prop-
erly.(2) Low pressure in all positions indicates a defec-
tive pump, a clogged filter, or a stuck pressure regu-
lator valve.
(3) Clutch circuit leaks are indicated if pressures
do not fall within the specified pressure range.
(4) If the overdrive clutch pressure is greater than
5 psi in Step 4 of Test Three, a worn reaction shaft
seal ring or a defective solenoid assembly is indi-
cated.
(5) If the underdrive clutch pressure is greater
than 5 psi in Step 4 of Test Two A, a defective sole-
noid assembly or TCM is the cause.
PRESSURE CHECK SPECIFICATIONS
Pressure Taps
Gear
Selector
PositionActual GearUnderdrive
ClutchOverdrive
ClutchReverse
ClutchTorque
Converter
Clutch Off2/4 ClutchLow/
Reverse
Clutch
Park *
PARK 0-2 0-5 0-2 60-110 0-2 115-145
0 mph
REVERSE *
REVERSE 0-2 0-7 165-235 50-100 0-2 165-235
0 mph
NEUTRAL *
NEUTRAL 0-2 0-5 0-2 60-110 0-2 115-145
0 mph
L#
FIRST 110-145 0-5 0-2 60-110 0-2 115-145
20 mph
3#
SECOND 110-145 0-5 0-2 60-110 115-145 0-2
30 mph
3#
DIRECT 75-95 75-95 0-2 60-90 0-2 0-2
45 mph
OD #
OVERDRIVE 0-2 75-95 0-2 60-90 75-95 0-2
30 mph
OD #
OVERDRIVE
WITH TCC0-2 75-95 0-2 0-5 75-95 0-2
50 mph
* Engine speed at 1500 rpm
# CAUTION: Both front wheels must be turning at the same speed.
RS41TE AUTOMATIC TRANSAXLE21 - 167
41TE AUTOMATIC TRANSAXLE (Continued)
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