1993 CHEVROLET DYNASTY differential

CAUTION: Always install new ring gear bolts. Bolts
must be properly torqued. CAUTION: Side gear end play must be within .001
to .013 inch.
Four select thrust washers are available: .032,
.037, .042, and .047 inch.
Fig. 16 Remove Pinion Shaft Roll Pin
Fig. 17 Remove or Install Pinion Shaft
Fig. 18 Remove or Install Pinion Gears, Side Gears, and Tabbed Thrust Washers, by Rotating Pinion Gears to Opening in Differential Case
Fig. 19 Differential Gears
Fig. 20 Checking Side Gear End Play
Fig. 21 Checking Side Gear End Play
Ä TRANSAXLE 21 - 79

CAUTION: Side gear end play must be within .001 to
.013 inch. Four select thrust washers are available: .032,
.037, .042, and .047 inch.DETERMINING SHIM THICKNESS
Shim thickness need only be determined if any of
the following parts are replaced:
² Transaxle case
² Differential carrier
² Differential bearing retainer
² Extension housing
² Differential bearing cups and cones
Refer to Bearing Adjustment Procedure in rear
of this section to determine proper shim thickness for
correct bearing preload and proper bearing turning
torque.
When rebuilding, reverse the above procedure.
Fig. 25 Differential Bearing Retainer
Fig. 26 Install Bearing Cup
Fig. 22 Remove Oil Seal
Fig. 23 Install New Oil Seal
Fig. 24 Remove Bearing Cup
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Remove old sealant before applying new seal-
ant. Use MOPAR tAdhesive Sealant on retainer
to seal retainer to case.
BEARING ADJUSTMENT PROCEDURES
GENERAL RULES ON SERVICING BEARINGS
(1) Take extreme care when removing and in stalling
bearing cups and cones. Use only an arbor press for
installation, as a hammer may not properly align the
bearing cup or cone. Burrs or nicks on the bearing seat
will give a false end play reading, while gauging for
proper shims. Improperly seated bearing cup and cones
are subject to low-mileage failure. (2) Bearing cups and cones should be replaced if they
show signs of pitting or heat distress. If distress is seen on either the cup or bearing rollers,
both cup and cone must be replaced. Bearing end play and drag torque specifica-
tions must be maintained to avoid premature
bearing failures. Used (original) bearing may lose up to 50 of the
original drag torque after break-in. All bearing adjustments must be made with no
other component interference or gear inter-
mesh, except the transfer gear bearing.
OUTPUT SHAFT BEARING
With output shaft gear removed.
(1) Install a 13.65 mm (.537 inch) and a 1.34 mm
(.053 inch) gauging shims on the planetary rear annu-
lus gear hub using grease to hold the shims in place.
The 13.65 mm shim has a larger inside diameter and
must be installed over the output shaft first. The 1.34
mm shim pilots on the output shaft. (2) Install output shaft gear and bearing assembly,
torque to 271 N Im (200 ft. lbs.).
(3) To measure bearing end play: (a) Attach Tool L-4432 to the output shaft gear.
(b) Mount a steel ball with grease into the end of
the output shaft. (c) Push and pull the gear while rotating back and
forth to insure seating of the bearing rollers. (d) Using a dial indicator, mounted to the tran-
saxle case, measure output shaft end play.
(4) Once bearing end play has been determined,
refer to the output shaft bearing shim chart for the
required shim combination to obtain proper bearing
setting. (a) The 12.65 mm (.498 inch), 13.15 mm (.518 inch)
or 13.65 mm (.537 inch) shims are always in-
Fig. 27 Checking Differential End Play
Fig. 28 Tool L-4436 and Torque Wrench
Fig. 29 Checking Differential Bearings Turning Torque
Ä TRANSAXLE 21 - 81

stalled first. These shims have lubrication slots
which are necessary for proper bearing lubri-
cation. (b) Shims thinner than 12.65 mm listed in the
chart are common to both the transfer shaft and
output shaft bearings.
(5) Use Tool L-4424 to remove the retaining nut and
washer. To remove the output shaft gear use Tool
L-4407. (6) Remove the two gauging shims and install the
proper shim combination, making sure to install the
12.65, 13.15, or 13.65 mm shim first. Use grease to hold
the shims in place. Install the output shaft gear and
bearing assembly. (7) Install the retaining nut and washer and torque
to 271 N Im (200 ft. lbs.).
(8) Using an inch-pound torque wrench, check the
turning torque. The torque should be between 3
and 8 inch-pounds. If the turning torque is too high, install a .05mm
(.002 inch) thicker shim. If the turning torque is too
low, install a .05 mm (.002 inch) thinner shim. Repeat
until the proper turning torque is 3 to 8 inch pounds.DIFFERENTIAL BEARING
(1) Remove the bearing cup from the differential
bearing retainer using Tool L-4518, and remove the
existing shim from under the cup. (2) Install a .50 mm (.020 inch) gauging shim and
reinstall the bearing cup into the retainer. Use an
arbor press to install the cup. Oil Baffle is not required when making shim
selection. (3) Install the bearing retainer into the case and
torque bolts to 28 N Im (250 in. lbs.).
(4) Position the transaxle assembly vertically on the
support stand and install Tool L-4436 into the exten-
sion. (5) Rotate the differential at least one full revolution
to ensure the tapered roller bearings are fully seated. (6) Attach a dial indicator to the case and zero the
dial indicator. Place the indicator tip on the end of Tool
L-4436. (7) Place a large screwdriver to each side of the ring
gear and lift. Check the dial indicator for the amount of
end play.
CAUTION: Do not damage the transaxle case and/or
differential cover sealing surface.
(8) When the end play has been determined, refer to
the Differential Bearing Shim Chart for the correct
shim combination to obtain the proper bearing setting. (9) Remove the differential bearing retainer. Re-
move the bearing cup and the .50 mm (.020 inch)
gauging shim. (10) Install the proper shim combination under the
bearing cup. Make sure the oil baffle is installed
properly in the bearing retainer, below the bearing
shim and cup. (11) Install the differential bearing retainer. Seal
the retainer to the housing with MOPAR tAdhesive
Sealant and torque bolts to 28 N Im (250 in. lbs.).
(12) Using special Tool L-4436 and an inch-pound
torque wrench, check the turning torque of the differ-
ential. The turning torque should be between 5
and 18 inch-pounds. If the turning torque is too high, install a .05
mm (.002 inch) thinner shim. If the turning
torque is too low, install a .05 mm (.002 inch)
thicker shim. Repeat until 5 to 18 inch-pounds
turning torque is obtained.
TRANSFER SHAFT BEARING
(1) Use Tool L-4434 to remove the retaining nut and
washer. Remove the transfer shaft gear using Tool
L-4407. (2) Install a 2.29 mm (.090 inch) and a 1.39 mm (.055
inch) gauging shims on the transfer shaft behind the
governor support.
OUTPUT SHAFT BEARING SHIM
21 - 82 TRANSAXLE Ä

(3) Install transfer shaft gear and bearing assem-
bly and torque the nut to 271 N Im (200 ft. lbs.).
(4) To measure bearing end play: (a) Attach Tool L-4432 to the transfer gear.
(b) Mount a steel ball with grease into the end of
the transfer shaft. (c) Push and pull the gear while rotating back
and forth to insure seating of the bearing rollers. (d) Using a dial indicator, measure transfer shaft
end play.
(5) Refer to the Transfer Bearing Shim Chart for
the required shim combination to obtain the proper
bearing setting. (6) Use Tool L-4424 to remove the retaining nut
and washer. Remove the transfer shaft gear using
Tool L-4407. (7) Remove the two gauging shims and install the
correct shim combination. Install the transfer gear and
bearing assembly. (8) Install the retaining nut and washer and torque
to 271 N Im (200 ft. lbs.). Measure transfer shaft end
play, end play should be .05 to .25 mm (.002 to .010
inch). (9) Measure bearing end play as outlined in Step (4).
End play should be between .05 mm and .25 mm (.002
to .010 inch). If end play is too high, install a .05 mm (.002
inch) thinner shim combination. If end play is
too low, install a .05 mm (.002 inch) thicker shim
combination. Repeat until .05 to .25 mm (.002 to
.010 inch) end play is obtained.
DIFFERENTIAL BEARING SHIMTRANSFER BEARING SHIM
Ä TRANSAXLE 21 - 83

41TE FOUR SPEED AUTOMATIC TRANSAXLE INDEX
page page
41TE Transaxle General Diagnosis ........... 88
Aluminum Thread Repair ................... 98
Bearing Adjustment Procedure .............. 141
Clutch Air Pressure Tests .................. 95
Coolers and Tubes Reverse Flushing ......... 98
Diagnosis Chart ``B'' ....................... 90
Diagnosis Trouble Code Chart ``A'' ............ 89
Differential Repair ....................... 136
Fluid and Filter Changes ................... 93
Fluid Drain and Refill ..................... 93
Fluid Leakage-Torque Converter Housing Area . . 97
Fluid Level and Condition .................. 93
Gearshift Linkage Adjustment ............... 98
General Information ....................... 85
Hydraulic Pressure Tests ................... 94
Input Clutches-Recondition ................ 121
Oil Cooler Flow Check .................... 99 Oil Pump Seal Replace
................... 136
Park/Neutral Position Switch ............... 102
Pinion Factor Procedure .................. 104
Road Test .............................. 93
Selection of Lubricant ..................... 93
Solenoid Assembly-Replace ................ 101
Special Additives ......................... 93
Speed Sensor-Input ...................... 102
Speed Sensor-Output .................... 103
Torque Converter Clutch Break-In Procedure . . . 104
Transaxle Quick Learn Procedure ........... 103
Transaxle Recondition .................... 105
Transaxle Removal and Installation ........... 99
Transmission Control Module ............... 103
Transmission Range Switch ................ 102
Valve Body-Recondition ................... 132
GENERAL INFORMATION
The 41TE four-speed FWD transaxle uses fully-
adaptive controls. Adaptive controls are those which
perform their functions based on real-time feedback
sensor information. The transaxle uses hydraulically
applied clutches to shift a planetary gear train.
TRANSAXLE IDENTIFICATION
The 41TE transaxle identification code is printed
on a label. The label is located on the transaxle case
next to the solenoid assembly (Fig. 1). Refer to Figure 2 for an internal view of the tran-
saxle assembly.
Fig. 1 Identification Tag Location
Ä TRANSAXLE 21 - 85

FLUID LEVEL AND CONDITION
The transmission and differential sump have a
common oil sump with a communicating opening
between the two. The torque converter fills in both the PPark and N
Neutral positions. Place the selector lever in PPark to
check the fluid level. The engine should be running
at idle speed for at least one minute, with the
vehicle on level ground. This will assure com-
plete oil level stabilization between differential
and transmission. The fluid should be at normal
operating temperature (approximately 82 C. or 180 F.).
The fluid level is correct if it is in the HOTregion
(cross-hatched area) on the oil level indicator. 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, the air bubbles can cause over heat-
ing, fluid oxidation, and varnishing, which can inter-
fere with normal valve, clutch, and accumulator opera-
tion. Foaming can also result in fluid escaping from the
transaxle vent where it may be mistaken for a leak. 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 overhaul is needed. Be
sure to examine the fluid on the dipstick closely. If
there is any doubt about its condition, drain out a
sample for a double check. After the fluid has been checked, seat the dipstick
fully to seal out water and dirt.
SELECTION OF LUBRICANT
It is important that the proper lubricant be used in
the 41TE transaxle. MOPAR tATF PLUS (Automatic
Transmission FluidÐtype 7176) should be used to aid
in assuring optimum transmission performance. Flu-
ids of the type labeled DEXRON II Automatic Trans-
mission Fluid are not recommended . DEXRON II
can be used only if the recommended fluid is not
available. If more than a small amount of DEXRON II
is used shudder or shift quality problems may result. It
is important that the transmission fluid be maintained
at the prescribed level using the recommended fluids.
SPECIAL ADDITIVES
Chrysler Corporation does not recommend the addi-
tion of any fluids to the transaxle, other than the
automatic transmission fluid listed above. An excep- tion to this policy is the use of special dyes to aid in
detecting fluid leaks. The use of transmission sealers
should be avoided, since they may adversely affect
seals.
FLUID AND FILTER CHANGES
When the factory fill fluid is changed, only fluids
labeled MOPAR tATF PLUS (Automatic Transmis-
sion fluid) Type 7176 should be used. A filter change
should be made at the time of the oil change. Also
the magnet (on the inside of the oil pan) should be
cleaned with a clean, dry cloth. If the transaxle is disassembled for any reason, the
fluid and filter should be changed.
FLUID DRAIN AND REFILL
(1) Raise vehicle on a hoist (See Lubrication,
Group 0). Place a drain container with a large open-
ing, under transaxle oil pan. (2) Loosen pan bolts and tap the pan at one corner
to break it loose allowing fluid to drain, then remove
the oil pan. (3) Install a new filter and O-ring on bottom of the
valve body. (4) Clean the oil pan and magnet. Reinstall pan
using new MOPAR tAdhesive Sealant. Tighten oil
pan bolts to 19 N Im (165 in. lbs.).
(5) Pour four quarts of MOPAR tATF PLUS (Au-
tomatic Transmission Fluid) Type 7176 through the
fill tube. (6) Start engine and allow to idle for at least one
minute. Then, with parking and service brakes ap-
plied, move selector lever momentarily to each posi-
tion, ending in the park or neutral position. (7) Add sufficient fluid to bring level to 1/8 inch
below the ADD mark. Recheck fluid level after transaxle is at normal op-
erating temperature. The level should be in the HOT
region (Fig. 3).
To prevent dirt from entering transaxle, make cer-
tain that dipstick is seated into the dipstick fill tube
(Fig. 4).
ROAD TEST
Prior to performing a road test, be certain that the
fluid level and condition, and control cable adjust-
ment have been checked and approved.
Fig. 3 Oil Level Indicator
Ä TRANSAXLE 21 - 93

When installing valve body assembly onto tran-
saxle, observe Figure 5. Guide park rod rollers into
guide bracket, while shifting manual lever assembly
out of the installation position.
OIL PUMP SEAL REPLACE DIFFERENTIAL REPAIR
The transfer shaft should be removed for differen-
tial repair and bearing turning torque checking.
Fig. 16 Remove Oil Pump Seal
Fig. 17 Install Oil Pump Seal
Fig. 1 Remove Extension Seal
Fig. 2 Install New Seal Into Extension
Fig. 14 Remove or Install Dual Retainer Plate
Fig. 15 Remove or Install Retainer Plate
21 - 136 TRANSAXLE Ä