Page 1953 of 2585
Installer 6053
Button 6055
Plate 6056
Disk 6057
Installer 6061
Remover 6062-A
Holder 6259
Bolt 6260
Installer 6261
Tip 6268
21s - 92 40TE AUTOMATIC TRANSAXLERS
40TE AUTOMATIC TRANSAXLE (Continued)
Page 1954 of 2585
Remover/Installer 6301
Remover/Installer 6302
Installer 6536-A
Puller 7794-A
End Play Socket Set 8266
Input Clutch Pressure Fixture 8391
RS40TE AUTOMATIC TRANSAXLE21s-93
40TE AUTOMATIC TRANSAXLE (Continued)
Page 1955 of 2585

ACCUMULATOR
DESCRIPTION
The 4XTE underdrive, overdrive, low/reverse, and
2/4 clutch hydraulic circuits each contain an accumu-
lator. An accumulator typically consists of a piston,
return spring(s), and a cover or plug. The overdrive
and underdrive accumulators are located within the
transaxle case, and are retained by the valve body
(Fig. 164).
The low reverse accumulator (Fig. 165) is also
located within the transaxle case, but the assembly is
retained by a cover and a snap-ring. The 2/4 accumulator is located in the valve body. It
is retained by a cover and retaining screws (Fig.
166).
OPERATION
The function of an accumulator is to cushion the
application of a frictional clutch element. When pres-
surized fluid is applied to a clutch circuit, the appli-
cation force is dampened by fluid collecting in the respective accumulator chamber against the piston
and spring(s). The intended result is a smooth, firm
clutch application.
Fig. 164 Underdrive and Overdrive Accumulators
1 - OVERDRIVE PISTON AND SPRING
2 - UNDERDRIVE PISTON AND SPRING
Fig. 165 Low/Reverse Accumulator
1 - PISTON
2 - RETURN SPRINGS
Fig. 166 2/4 Accumulator Assembly
1 - VALVE BODY
2 - RETAINER PLATE
3 - DETENT SPRING
4 - RETURN SPRINGS
5 - PISTON
21s - 94 40TE AUTOMATIC TRANSAXLERS
Page 1956 of 2585

DRIVING CLUTCHES
DESCRIPTION
Three hydraulically applied input clutches are used
to drive planetary components. The underdrive, over-
drive, and reverse clutches are considered input
clutches and are contained within the input clutch
assembly (Fig. 167). The input clutch assembly also
contains: ² Input shaft
² Input hub
² Clutch retainer
² Underdrive piston
² Overdrive/reverse piston
² Overdrive hub
² Underdrive hub
OPERATION
The three input clutches are responsible for driving
different components of the planetary geartrain.
NOTE: Refer to the ªElements In Useº chart in Diag-
nosis and Testing for a collective view of which
clutch elements are applied at each position of the
selector lever.
UNDERDRIVE CLUTCH
The underdrive clutch is hydraulically applied in
first, second, and third (direct) gears by pressurized
fluid against the underdrive piston. When the under-
drive clutch is applied, the underdrive hub drives the
rear sun gear.
OVERDRIVE CLUTCH
The overdrive clutch is hydraulically applied in
third (direct) and overdrive gears by pressurized fluid
against the overdrive/reverse piston. When the over-
drive clutch is applied, the overdrive hub drives the
front planet carrier.
REVERSE CLUTCH
The reverse clutch is hydraulically applied in
reverse gear only by pressurized fluid against the
overdrive/reverse piston. When the reverse clutch is
applied, the front sun gear assembly is driven.
FINAL DRIVE
DESCRIPTION
The 4XTE differential is a conventional open
design. It consists of a ring gear and a differential
case. The differential case consists of pinion and side
gears, and a pinion shaft. The differential case is
supported in the transaxle by tapered roller bearings
(Fig. 168).
Fig. 167 Input Clutch Assembly
1 - INPUT SHAFT
2 - UNDERDRIVE CLUTCH
3 - OVERDRIVE CLUTCH
4 - REVERSE CLUTCH
5 - OVERDRIVE SHAFT
6 - UNDERDRIVE SHAFT
Fig. 168 Differential Assembly
1 - DIFFERENTIAL CASE
2 - RING GEAR
3 - TRANSFER SHAFT
4 - PINION GEAR
5 - PINION SHAFT
6 - SIDE GEAR
RS 40TE AUTOMATIC TRANSAXLE21s-95
Page 1957 of 2585

OPERATION
The differential assembly is driven by the transfer
shaft by way of the differential ring gear. The ring
gear drives the differential case, and the case drives
the driveshafts through the differential gears. The
differential pinion and side gears are supported in
the case by thrust washers and a pinion shaft. Dif-
ferential pinion and side gears make it possible for
front tires to rotate at different speeds while corner-
ing.
DISASSEMBLY
NOTE: The differential is serviced as an assembly.
The only parts that are serviceable within the differ-
ential are the differential bearing cups and cones. If
any other part fails within the differential, you must
replace the differential assembly along with the
transfer shaft.
The transfer shaft should be removed for differen-
tial repair and bearing turning torque checking. (1) Remove the differential cover and bolts (Fig.
169) (Fig. 170).
(2) Remove the differential bearing retainer and
bolts (Fig. 171) (Fig. 172). (3) Using a plastic hammer, remove extension
housing/adapter plate on the right side of the trans-
axle.
WARNING: HOLD ONTO DIFFERENTIAL ASSEMBLY
TO PREVENT IT FROM ROLLING OUT OF HOUSING.
(4) Remove differential assembly.
Fig. 169 Differential Cover Bolts
1 - DIFFERENTIAL COVER BOLTS
2 - DIFFERENTIAL COVER
Fig. 170 Remove Differential Cover
1 - DIFFERENTIAL ASSEMBLY
2 - DIFFERENTIAL COVER
Fig. 171 Differential Retainer Bolts
1 - DIFFERENTIAL RETAINER BOLTS
Fig. 172 Remove Bearing Retainer
1 - DIFFERENTIAL BEARING RETAINER
2 - TOOL L-4435
21s - 96 40TE AUTOMATIC TRANSAXLERS
FINAL DRIVE (Continued)
Page 1958 of 2585

(5) Set up dial indicator set C-3339 and tool
C-4996 as shown in (Fig. 173) (Fig. 174) to measure
side gear end play. Side gear end play must be
within 0.001-0.013 in. (6) Use Miller Special Tool 5048, 5048-3 Collets,
and L-4539-2 Button to remove the differential bear-
ing cone on the extension housing side. (7) Use Miller Special Tool 5048, 5048-4 Collets,
and L-4539-2 Button to remove the differential bear-
ing cone on the bearing retainer side (Fig. 175) (Fig.
176) (Fig. 177).
Fig. 173 Checking Side Gear End Play (Extension Housing Side)
1 - SPECIAL TOOL C-4996 (NOTE POSITION)
2 - DIAL INDICATOR SET
3 - DIFFERENTIAL ASSEMBLY
4 - SIDE GEAR
Fig. 174 Checking Side Gear End Play (Ring Gear Side)
1 - SPECIAL TOOL C-4996 (NOTE POSITION)
2 - DIAL INDICATOR SET
3 - DIFFERENTIAL ASSEMBLY
Fig. 175 Position Button and Collets OntoDifferential and Bearing (Ring Gear Side)
1 - SPECIAL TOOL L-4539-2
2 - SPECIAL TOOL 5048
3 - SPECIAL TOOL 5048-4
Fig. 176 Position Tool 5048 Over Button and Collets at Differential Bearing (Ring Gear Side)
1 - SPECIAL TO0L 5048
2 - DIFFERENTIAL
3 - SPECIAL TOOL 5048-4
RS 40TE AUTOMATIC TRANSAXLE21s-97
FINAL DRIVE (Continued)
Page 1959 of 2585

(8) Using Miller Special Tool L-4518, remove the
differential bearing race from the extension housing/
adapter plate. (9) Using Miller Special Tool 6062A, remove the
differential bearing race from the bearing retainer
(Fig. 178) (Fig. 179).
DIFFERENTIAL SERVICE TOOLS
COMPONENT REMOVER INSTALLER
Diff. Bear. On
Retainer Side 5048, 5048-4
Collets,
L-4539-2
Button5052, C-4171
Diff. Bear. On
Ext. Hous. Side 5048, 5048-3
Collets,
L-4539-2
ButtonL-4410, C-4171
Diff. Race. On
Retainer Side 6062-A 6061, C-4171
Diff. Race. On
Ext. Hous. Side L-4518 L-4520, C-4171
Extension
Housing Seal 7794-A, C-637
Slide HammerL-4520, C-4171
Bearing
Retainer Seal 794-A, C-637
Slide HammerL-4520, C-4171
Fig. 177 Remove Differential Bearing Cone (Ring
Gear Side)
1 - SPECIAL TOOL 5048
2 - RING GEAR
Fig. 178 Position Bearing Cup Remover Tool in Retainer
1 - SPECIAL TOOL 6062A
2 - DIFFERENTIAL BEARING RETAINER
Fig. 179 Remove Bearing Cup
1 - SPECIAL TOOL 6062A
2 - DIFFERENTIAL BEARING RETAINER
21s - 98 40TE AUTOMATIC TRANSAXLERS
FINAL DRIVE (Continued)
Page 1960 of 2585

ASSEMBLY
NOTE: The differential is serviced as an assembly.
The only parts that are serviceable within the differ-
ential are the differential bearing cups and cones. If
any other part fails within the differential, you must
replace the differential assembly along with the
transfer shaft.
NOTE: Use MoparTATF RTV (MS-GF41), or equiva-
lent, on retainer and extension housing/adapter
plate to seal to case.
(1) Using Miller Special Tool L-4410, and C-4171,
install differential bearing to differential (extension
housing side) (Fig. 180).
(2) Using Miller Special Tool 5052 and C-4171,
install differential bearing to differential (bearing
retainer side). (3) Using Miller Special Tool 6061 and C-4171,
install differential bearing race to bearing retainer
(Fig. 181). (4) Using Miller Special Tool L±4520 and C-4171,
install differential bearing cup to extension housing. (5) Measure and adjust differential bearing pre-
load (Refer to 21 - TRANSMISSION/TRANSAXLE/
AUTOMATIC - 41TE/FINAL DRIVE -
ADJUSTMENTS) . (6) Install differential assembly to case. Install
extension housing/adapter plate and bearing retainer. (7) Install bearing retainer with a bead of Mopar t
ATF RTV (MS-GF41) and torque bolts (Fig. 182) to
28 N´m (250 in. lbs.).
(8) Install extension housing/adapter plate with a
bead of Mopar tATF RTV (MS-GF41) and torque
bolts to 28 N´m (250 in. lbs.).
Fig. 180 Position Bearing Cone Onto Differential
1 - DIFFERENTIAL ASSEMBLY
2 - DIFFERENTIAL BEARING
Fig. 181 Differential Bearing Retainer
1 - DIFFERENTIAL BEARING CUP
2 - DIFFERENTIAL BEARING RETAINER
Fig. 182 Differential Retainer Bolts
1 - DIFFERENTIAL RETAINER BOLTS
RS 40TE AUTOMATIC TRANSAXLE21s-99
FINAL DRIVE (Continued)