clutch CHRYSLER CARAVAN 2003 Service Manual

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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(3) Select sensors.
(4) Read the transmission temperature value.
(5) Compare the fluid temperature value with the
fluid temperature chart (Fig. 210).
(6) Adjust transmission fluid level shown on the
indicator according to the chart.
(7) Check transmission for leaks.
Low fluid level can cause a variety of conditions
because it allows the pump to take in air along with
the fluid. As in any hydraulic system, air bubbles
make the fluid spongy, therefore, pressures will be
low and build up slowly.
Improper filling can also raise the fluid level too
high. When the transaxle has too much fluid, the
gears churn up foam and cause the same conditions
which occur with a low fluid level.
In either case, air bubbles can cause overheating
and/or fluid oxidation, and varnishing. This can
interfere with normal valve, clutch, and accumulator
operation. Foaming can also result in fluid escaping
from the transaxle vent where it may be mistaken
for a leak.FLUID CONDITION
Along with fluid level, it is important to check the
condition of the fluid. When the fluid smells burned,
and is contaminated with metal or friction material
particles, a complete transaxle recondition is proba-
bly required. Be sure to examine the fluid on the dip-
stick closely. If there is any doubt about its condition,
drain out a sample for a double check.
MopartATF+4 (Automatic Transmission Fluid)
when new is red in color. The ATF is dyed red so it
can be identified from other fluids used in the vehicle
such as engine oil or antifreeze. The red color is not
permanent and is not an indicator of fluid condition.
As the vehicle is driven, the ATF will begin to look
darker in color and may eventually become brown.
This is normal.ATF+4 also has a unique odor that
may change with age. Consequently,odor and color
cannot be used to indicate the fluid condition
or the need for a fluid change.
After the fluid has been checked, seat the dipstick
fully to seal out water and dirt.
Fig. 210 Transmission Fluid Temperature Chart
1 - MAX. LEVEL
2 - MIN. LEVEL
21 - 202 41TE AUTOMATIC TRANSAXLERS
FLUID (Continued)
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ADJUSTMENT
(1) Park the vehicle on level ground and set the
parking brake.
(2) Place the gearshift lever in gated park (P) and
remove ignition key.
(3) Loosen the cable adjustment screw at the
transaxle manual valve lever (Fig. 223).
(4) Pull the gearshift lever fully forward to the
park detent position.
(5) Release the park brake, then rock the vehicle
to assure it is in park. Reset the park brake.
(6) Tighten the cable adjustment screw to 8 N´m
(70 in. lbs.). Gearshift cable should now be properly
adjusted.
(7) Verify adjustment by using the verification pro-
cedure.
HOLDING CLUTCHES
DESCRIPTION
Two hydraulically applied multi-disc clutches are
used to hold planetary geartrain components station-
ary while the input clutches drive others. The 2/4
and Low/Reverse clutches are considered holding
clutches and are contained at the rear of the trans-
axle case. (Fig. 224).
OPERATION
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.
2/4 CLUTCH
The 2/4 clutch is hydraulically applied in second
and fourth gears by pressurized fluid against the 2/4
clutch piston. When the 2/4 clutch is applied, the
front sun gear assembly is held or grounded to the
transaxle case.
LOW/REVERSE CLUTCH
The Low/Reverse clutch is hydraulically applied in
park, reverse, neutral, and first gears by pressurized
fluid against the Low/Reverse clutch piston. When
the Low/Reverse clutch is applied, the front planet
carrier/rear annulus assembly is held or grounded to
the transaxle case.
Fig. 223 Gearshift Cable Adjustment
1 - GEARSHIFT CABLE ADJUSTMENT SCREW
2 - GEARSHIFT CABLE
Fig. 224 2/4 and Low/Reverse Clutches
1 - FRONT PLANET CARRIER/REAR ANNULUS
2 - 2/4 CLUTCH
3 - L/R CLUTCH
4 - REAR PLANET CARRIER/FRONT ANNULUS
5 - REAR SUN GEAR
6 - FRONT SUN GEAR ASSEMBLY
RS41TE AUTOMATIC TRANSAXLE21 - 207
GEAR SHIFT CABLE (Continued)
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INPUT CLUTCH ASSEMBLY
DISASSEMBLY
(1) Mount input clutch assembly to Input Clutch
Pressure Fixture (Tool 8391).
(2) Tap down reverse clutch reaction plate to
release pressure from snap ring (Fig. 225).
(3) Remove reverse clutch snap ring (Fig. 226).(4) Pry up and remove reverse clutch reaction
plate (Fig. 227).
(5) Remove reverse clutch pack (Fig. 228).Ta g
components for assembly identification.
(6) Remove the OD/Reverse pressure plate snap
ring (Fig. 229).
(7) Remove OD/Reverse pressure plate (Fig. 229).
(8) Remove OD/Reverse pressure plate wave snap
ring (Fig. 229).
(9) Remove OD clutch pack (Fig. 229).Tag com-
ponents for assembly identification.
Fig. 225 Tapping Reaction Plate
1 - #4 THRUST PLATE (SELECT)
2 - TAP DOWN REVERSE CLUTCH REACTION PLATE TO
REMOVE OR INSTALL SNAP RING
3 - INPUT SHAFT CLUTCHES RETAINER ASSEMBLY
4 - REVERSE CLUTCH REACTION PLATE
Fig. 226 Reverse Clutch Snap Ring
1 - REACTION PLATE
2 - SCREWDRIVER
3 - REVERSE CLUTCH SNAP RING (SELECT)
Fig. 227 Pry Reverse Clutch Reaction Plate
1 - REVERSE CLUTCH REACTION PLATE
2 - SCREWDRIVER
3 - SCREWDRIVER
21 - 208 41TE AUTOMATIC TRANSAXLERS
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Fig. 228 Reverse Clutch Assembly
1 - SNAP RING
2 - REACTION PLATE
3 - CLUTCH DISC (2)4 - CLUTCH PLATE (1)
5 - INPUT CLUTCH ASSEMBLY
RS41TE AUTOMATIC TRANSAXLE21 - 209
INPUT CLUTCH ASSEMBLY (Continued)
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(10) Remove and inspect OD and UD Shafts, as
well as #3 thrust washer and plate, and #2 needle
bearing (Fig. 230).
(11) Remove the OD/UD reaction plate tapered
snap ring, reaction plate, and first friction disc (Fig.
231).(12) Remove the UD clutch flat snap ring and rest
of UD clutch pack (Fig. 231).Tag clutch pack for
assembly identification.
CAUTION: Compress return spring just enough to
remove or install snap ring.
Fig. 229 Overdrive Clutch Assembly
1 - SNAP RING
2 - OD/REVERSE PRESSURE PLATE
3 - SNAP RING (WAVE)4 - CLUTCH DISC (4)
5 - CLUTCH STEEL (3)
6 - INPUT CLUTCH ASSEMBLY
21 - 210 41TE AUTOMATIC TRANSAXLERS
INPUT CLUTCH ASSEMBLY (Continued)
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Fig. 230 Overdrive/Underdrive Shafts
1 - OVERDRIVE SHAFT
2 - #3 THRUST PLATE (3 TABS)
3 - #3 THRUST WASHER (5 TABS)4 - UNDERDRIVE SHAFT
5 - #2 NEEDLE BEARING (3 TABS)
6 - INPUT CLUTCH ASSEMBLY
RS41TE AUTOMATIC TRANSAXLE21 - 211
INPUT CLUTCH ASSEMBLY (Continued)
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(13) Using Tool 5059A and an arbor press, com-
press UD clutch piston/spring enough to remove snap
ring (Fig. 232) (Fig. 233).
(14) Remove spring retainer, spring, and piston
(Fig. 233).
(15) Remove input hub tapered snap ring (Fig.
234) (Fig. 240).
(16) Tap on input hub with soft faced hammer and
separate input hub from OD/Reverse piston and
clutch retainer (Fig. 235).
Fig. 231 Underdrive Clutch Assembly
1 - SNAP RING (TAPERED)
2 - OD/UD REACTION PLATE
3 - CLUTCH DISC4 - SNAP RING (FLAT)
5 - CLUTCH PLATE
6 - INPUT CLUTCH ASSEMBLY
Fig. 232 UD Spring Retainer Snap Ring
1 - SNAP RING PLIERS
2 - ARBOR PRESS RAM
3 - SNAP RING
4 - SPECIAL TOOL 5059A
21 - 212 41TE AUTOMATIC TRANSAXLERS
INPUT CLUTCH ASSEMBLY (Continued)
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Fig. 233 Underdrive Clutch Piston, Spring and Retainer
1 - SNAP RING
2 - SPRING RETAINER
3 - SPRING
4 - UD CLUTCH PISTON5 - SEAL, OUTER
6 - SEAL, INNER
7 - INPUT CLUTCH ASSEMBLY
Fig. 234 Input Hub Tapered Snap Ring
1 - INPUT SHAFT
2 - INPUT HUB SNAP RING (TAPERED SIDE UP WITH TABS IN
CAVITY)
3 - SNAP RING PLIERSFig. 235 Tap on Input Hub
1 - INPUT SHAFT AND HUB ASSEMBLY
2 - PLASTIC HAMMER
RS41TE AUTOMATIC TRANSAXLE21 - 213
INPUT CLUTCH ASSEMBLY (Continued)
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(17) Separate clutch retainer from OD/Reverse pis-
ton (Fig. 236).
(18) Using Tool 6057 and an arbor press, compress
return OD/Reverse piston return spring just enough
to remove snap ring (Fig. 237).(19) Remove input shaft to input clutch hub snap
ring (Fig. 238) (Fig. 240).
(20) Using a suitably sized socket and an arbor
press, remove input shaft from input shaft hub (Fig.
239).
Fig. 236 Pull Retainer from Piston
1 - OVERDRIVE/REVERSE PISTON
2 - INPUT CLUTCHES RETAINER
Fig. 237 Remove Snap Ring
1 - ARBOR PRESS RAM (COMPRESS RETURN SPRING JUST
ENOUGH TO REMOVE OR INSTALL SNAP RING)
2 - SCREWDRIVER
3 - SNAP RING
4 - SPECIAL TOOL 6057
5 - OD/REVERSE PISTON
6 - RETURN SPRING
Fig. 238 Remove Input Shaft Snap Ring
1 - INPUT SHAFT
2 - SHARP-POINTED TOOL
3 - SNAP RING
4 - O-RINGS
5 - SEALS
Fig. 239 Remove Input Shaft
1 - ARBOR PRESS RAM
2 - SOCKET
3 - SEAL
4 - O-RINGS
5 - INPUT SHAFT
6 - SEAL
7 - INPUT SHAFT HUB ASSEMBLY
21 - 214 41TE AUTOMATIC TRANSAXLERS
INPUT CLUTCH ASSEMBLY (Continued)
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