DODGE TOWN AND COUNTRY 2003 Service Manual

Remover Kit L-4406
Gear Puller L-4407A
Bearing Installer L-4410
Gear Checking Plate L-4432
Bearing Puller L-4435
Differential Tool L-4436A
Special Jaw Set L-4518
Installer L-4520
21 - 184 41TE AUTOMATIC TRANSAXLERS
41TE AUTOMATIC TRANSAXLE (Continued)
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Thrust Button L-4539-2
Adapter L-4559
Adapter L-4559-2
Bearing Splitter P-334
Puller Set 5048
Remover/Installer 5049-A
Installer 5050A
Installer 5052
RS41TE AUTOMATIC TRANSAXLE21 - 185
41TE AUTOMATIC TRANSAXLE (Continued)
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Compressor 5058A
Compressor 5059-A
Installer 5067
Pliers 6051
Installer 6052
Installer 6053
Button 6055
Plate 6056
21 - 186 41TE AUTOMATIC TRANSAXLERS
41TE AUTOMATIC TRANSAXLE (Continued)
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Disk 6057
Installer 6061
Remover 6062-A
Holder 6259
Bolt 6260
Installer 6261
Tip 6268
Remover/Installer 6301
RS41TE AUTOMATIC TRANSAXLE21 - 187
41TE AUTOMATIC TRANSAXLE (Continued)
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ACCUMULATOR
DESCRIPTION
The 41te underdrive, overdrive, low/reverse, and
2/4 clutch hydraulic circuits each contain an accumu-
lator. An accumulator typically consists of a piston,
seals, return spring(s), and a cover or plug. The over-
drive and underdrive accumulators are located
within the transaxle case, and are retained by the
valve body (Fig. 168).
The low reverse accumulator (Fig. 169) 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.
170).
Remover/Installer 6302
Installer 6536-A
Puller 7794-A
End Play Socket Set 8266
Input Clutch Pressure Fixture 8391
Fig. 168 Underdrive and Overdrive Accumulators
1 - RETURN SPRING
2 - UNDERDRIVE CLUTCH ACCUMULATOR
3 - SEAL RING (2)
4 - OVERDRIVE CLUTCH ACCUMULATOR
21 - 188 41TE AUTOMATIC TRANSAXLERS
41TE AUTOMATIC TRANSAXLE (Continued)
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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.
AUTOSTICK SWITCH
DESCRIPTION
Autostick is a driver-interactive transaxle feature
that offers manual gear shifting capability. The control
switch is part of the transaxle gear shift lever as
shown in (Fig. 171). It can only be serviced by replac-
ing the gearshift lever assembly. (Refer to 19 - STEER-
ING/COLUMN/GEAR SHIFT LEVER - REMOVAL)
OPERATION
When the shift lever is moved into the Autostick
position (as indicated by the Shift Lever Position
Indicator in the cluster), the transaxle remains in
whatever gear it was using before Autostick was acti-
vated. The TCM sends a 5 volt signal through the
switch and then monitors the signal for voltage drop.
Each switch state (driver command) results in a spe-
cific voltage reading sensed by the TCM. The TCM
then determines transaxle operation (upshift/down-
shift/OD Lockout) based on their corresponding volt-
age. Refer to the following chart for corresponding
switch states and voltage readings:
Switch State Voltage Reading
Autostick DOWN
depressed0.3V-1.6V
Autostick UP depressed 1.6V-2.8V
Overdrive OFF9Lockout9
depressed2.8V-3.8V
All switches open 3.8V-4.8V
-Voltage values <.3V and >4.8V are considered
INVALID and will result in a DTC
Fig. 169 Low/Reverse Accumulator Assembly
1 - ACCUMULATOR PISTON
2 - SEAL RINGS
3 - RETURN SPRINGS
4 - (NOTE NOTCH)
Fig. 170 2/4 Accumulator Assembly
1 - VALVE BODY
2 - RETAINER PLATE
3 - DETENT SPRING
4 - SPRINGS
5 - SEALS
6 - PISTON
Fig. 171 Autostick Switch Location (if equipped)
RS41TE AUTOMATIC TRANSAXLE21 - 189
ACCUMULATOR (Continued)
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Moving the switch up causes an upshift and moving
the switch down causes a downshift. The instrument
cluster will illuminate the selected gear. The vehicle
can be launched in 1st, 2nd, or 3rd gear while in the
Autostick mode. The speed control is operable in 3rd
and 4th gear Autostick mode. Speed control will be
deactivated if the transaxle is shifted to 2nd gear.
Shifting into OD position cancels the Autostick mode,
and the transaxle resumes the OD shift schedule.
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. 172). The input clutch assembly also
contains:
²Input shaft
²Input hub
²Clutch retainer
²Underdrive piston
²Overdrive/reverse piston
²Overdrive hub
²Underdrive 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
DISASSEMBLY
NOTE: The differential is serviced as an assembly.
Differential service is limited to bearing cups and
cones. Any other differential component failure
must be remedied by differential assembly and
transfer shaft replacement.
Fig. 172 Input Clutch Assembly
1 - INPUT SHAFT
2 - UNDERDRIVE CLUTCH
3 - OVERDRIVE CLUTCH
4 - REVERSE CLUTCH
5 - OVERDRIVE SHAFT
6 - UNDERDRIVE SHAFT
21 - 190 41TE AUTOMATIC TRANSAXLERS
AUTOSTICK SWITCH (Continued)
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The transfer shaft should be removed for differen-
tial repair and bearing turning torque checking.
(1) Remove the differential cover and bolts (Fig.
173) (Fig. 174).(2) Remove the differential bearing retainer and
bolts (Fig. 175) (Fig. 176).
(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.
Fig. 173 Differential Cover Bolts
1 - DIFFERENTIAL COVER BOLTS
2 - DIFFERENTIAL COVER
Fig. 174 Remove Differential Cover
1 - DIFFERENTIAL ASSEMBLY
2 - DIFFERENTIAL COVER
Fig. 175 Differential Retainer Bolts
1 - DIFFERENTIAL RETAINER BOLTS
Fig. 176 Remove Bearing Retainer
1 - DIFFERENTIAL BEARING RETAINER
2 - TOOL L-4435
RS41TE AUTOMATIC TRANSAXLE21 - 191
FINAL DRIVE (Continued)
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(4) 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.
(5) 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. 177) (Fig.
178) (Fig. 179).
(6) Using Miller Special Tool L-4518, remove the
differential bearing race from the extension housing.
(7) Using Miller Special Tool 6062A, remove the
differential bearing race from the bearing retainer
(Fig. 180) (Fig. 181).
Fig. 177 Position Button and Collets Onto
Differential and Bearing (Ring Gear Side)
1 - SPECIAL TOOL L-4539-2
2 - SPECIAL TOOL 5048
3 - SPECIAL TOOL 5048-4
Fig. 178 Position Tool 5048 Over Button and Collets
at Differential Bearing (Ring Gear Side)
1 - SPECIAL TO0L 5048
2 - DIFFERENTIAL
3 - SPECIAL TOOL 5048-4
Fig. 179 Remove Differential Bearing Cone (Ring
Gear Side)
1 - SPECIAL TOOL 5048
2 - RING GEAR
Fig. 180 Position Bearing Cup Remover Tool in
Retainer
1 - SPECIAL TOOL 6062A
2 - DIFFERENTIAL BEARING RETAINER
21 - 192 41TE AUTOMATIC TRANSAXLERS
FINAL DRIVE (Continued)
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(8) Remove ring gear-to-differential case bolts and
floating pinion shaft retainers (Fig. 182).(9) Separate ring gear from differential case (Fig.
183).
(10) Separate differential cover from case using
suitable screwdrivers at position shown in (Fig. 184)
Fig. 181 Remove Bearing Cup
1 - SPECIAL TOOL 6062A
2 - DIFFERENTIAL BEARING RETAINER
Fig. 182 Ring Gear-to-Case Bolts
1 - DIFFERENTIAL CASE
2 - PINION SHAFT RETAINER
3 - RING GEAR
4 - RING GEAR-TO-CASE BOLT
Fig. 183 Ring Gear Removal
1 - DIFFERENTIAL CASE
2 - RING GEAR
Fig. 184 Separating Differential Support with
Screwdrivers
1 - DIFFERENTIAL SUPPORT
2 - DIFFERENTIAL CASE
3 - SCREWDRIVER
4 - RELIEF (2 @ 180É APART)
RS41TE AUTOMATIC TRANSAXLE21 - 193
FINAL DRIVE (Continued)
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