Automatic transmission R & R
#1
Automatic transmission R & R
Im looking for some pointers on removing and then reinstalling my trans, its been a while since i have had to drop a trans.
1) So far i know to remove the front and rear drive shafts.
2)then remove any wires or cables going into the trans and transfercase and 3)also remove the lines going to the cooler for the trans
4)next remove the transfercase
now for the transmission in need to support the engine, what does everyone use, i have used a floor jack but dont like it to much. has any one used a heavy duty ratchet strap?
then remove the trans, get it rebuilt and then reinstall it.
is there any adjustments i will need to do after reinstalling it, like a kickdown linkage?
is there anything im missing or any other ideas or help?
1) So far i know to remove the front and rear drive shafts.
2)then remove any wires or cables going into the trans and transfercase and 3)also remove the lines going to the cooler for the trans
4)next remove the transfercase
now for the transmission in need to support the engine, what does everyone use, i have used a floor jack but dont like it to much. has any one used a heavy duty ratchet strap?
then remove the trans, get it rebuilt and then reinstall it.
is there any adjustments i will need to do after reinstalling it, like a kickdown linkage?
is there anything im missing or any other ideas or help?
#3
REMOVAL
NOTE: The overdrive unit can be removed and serviced separately. It is not necessary to remove the entire
transmission assembly to perform overdrive unREMOVAL
NOTE: The overdrive unit can be removed and serviced separately. It is not necessary to remove the entire
transmission assembly to perform overdrive unit repairs.
1. Disconnect battery negative cable.
2. Raise vehicle.
3. Remove the transfer case skid plate (2), if
equipped.
4. Disconnect and lower or remove any necessary
exhaust components.
5. Remove engine-to-transmission struts.
6. Remove starter motor. (Refer to 8 - ELECTRICAL/
STARTING/STARTER MOTOR - REMOVAL)
7. Disconnect and remove the crankshaft position
sensor. (Refer to 14 - FUEL SYSTEM/FUEL
INJECTION/CRANKSHAFT POSITION SENSOR -
REMOVAL) Retain the sensor attaching bolts.
8. If transmission is being removed for overhaul,
remove transmission oil pan, drain fluid and rein-
stall pan.
9. Remove torque converter access cover.
10. Rotate crankshaft in clockwise direction until con-
verter bolts are accessible. Then remove bolts
one at a time. Rotate crankshaft with socket
wrench on dampener bolt.
11. Mark propeller shaft and axle yokes for assembly alignment. Then disconnect and remove propeller shaft. On 4
x 4 models, remove both propeller shafts. (Refer to 3 - DIFFERENTIAL & DRIVELINE/PROPELLER SHAFT/
PROPELLER SHAFT - REMOVAL)
12. Disconnect wires from the transmission range sensor and transmission solenoid connector.
13. Disconnect gearshift cable (1) from the transmission manual lever (2).
14. For vehicles with gas engines, disconnect throttle valve cable from transmission bracket and throttle valve lever.
15. For vehicles with a diesel engine, remove the
bolts (2) holding the transmission throttle valve
actuator (TTVA) (1) to the transmission case.
16. Allow the TTVA (1) to rotate clockwise away from
the transmission.
17. Remove the wiring connector (2) from the TTVA
(1).
18. Lift the TTVA (1) straight upward and off the throt-
tle valve shaft (3).
DR AUTOMATIC TRANSMISSION - 48RE - SERVICE INFORMATION 21 - 1295
19. On 4X4 models, disconnect shift rod from transfer
case shift lever.
20. Support rear of engine with safety stand or jack.
21. Raise transmission slightly with service jack to
relieve load on crossmember and supports.
22. Remove the nuts (3) securing rear support (1) to
the transmission crossmember.
23. Remove the bolts(2) holding the rear support (1)
to the transmission (5) remove the rear support.
24. Remove bolts attaching crossmember to frame
and remove crossmember.
25. On 4X4 models, remove transfer case. (Refer to
21 - TRANSMISSION AND TRANSFER CASE/
TRANSFER CASE - REMOVAL)
26. Remove fill tube (7) bracket bolts and pull tube
out of transmission. Retain fill tube seal (6). On
4X4 models, it will also be necessary to remove
bolt attaching transfer case vent tube to converter
housing.
27. Disconnect fluid cooler lines (6, 7) at transmission
(5), diesel engines.
21 - 1296 AUTOMATIC TRANSMISSION - 48RE - SERVICE INFORMATION DR
28. Disconnect fluid cooler lines (4, 5) at transmission
(3), gas engines.
29. Remove all bolts (1) holding the transmission (3)
to the engine adapter (2), diesel engines.
30. Carefully work transmission and torque converter
assembly rearward off engine block dowels.
31. Lower transmission and remove assembly from
under the vehicle.
32. To remove torque converter, remove C-clamp
from edge of bell housing and carefully slide
torque converter out of the transmission.
DR AUTOMATIC TRANSMISSION - 48RE - SERVICE INFORMATION 21 - 1297
33. Remove all bolts (1) holding the transmission (3)
to the engine adapter (2), gas engines.
34. Carefully work transmission and torque converter
assembly rearward off engine block dowels.
35. Lower transmission and remove assembly from
under the vehicle.
36. To remove torque converter, remove C-clamp
from edge of bell housing and carefully slide
torque converter out of the transmission.
21 - 1298 AUTOMATIC TRANSMISSION - 48RE - SERVICE INFORMATION DR
NOTE: The overdrive unit can be removed and serviced separately. It is not necessary to remove the entire
transmission assembly to perform overdrive unREMOVAL
NOTE: The overdrive unit can be removed and serviced separately. It is not necessary to remove the entire
transmission assembly to perform overdrive unit repairs.
1. Disconnect battery negative cable.
2. Raise vehicle.
3. Remove the transfer case skid plate (2), if
equipped.
4. Disconnect and lower or remove any necessary
exhaust components.
5. Remove engine-to-transmission struts.
6. Remove starter motor. (Refer to 8 - ELECTRICAL/
STARTING/STARTER MOTOR - REMOVAL)
7. Disconnect and remove the crankshaft position
sensor. (Refer to 14 - FUEL SYSTEM/FUEL
INJECTION/CRANKSHAFT POSITION SENSOR -
REMOVAL) Retain the sensor attaching bolts.
8. If transmission is being removed for overhaul,
remove transmission oil pan, drain fluid and rein-
stall pan.
9. Remove torque converter access cover.
10. Rotate crankshaft in clockwise direction until con-
verter bolts are accessible. Then remove bolts
one at a time. Rotate crankshaft with socket
wrench on dampener bolt.
11. Mark propeller shaft and axle yokes for assembly alignment. Then disconnect and remove propeller shaft. On 4
x 4 models, remove both propeller shafts. (Refer to 3 - DIFFERENTIAL & DRIVELINE/PROPELLER SHAFT/
PROPELLER SHAFT - REMOVAL)
12. Disconnect wires from the transmission range sensor and transmission solenoid connector.
13. Disconnect gearshift cable (1) from the transmission manual lever (2).
14. For vehicles with gas engines, disconnect throttle valve cable from transmission bracket and throttle valve lever.
15. For vehicles with a diesel engine, remove the
bolts (2) holding the transmission throttle valve
actuator (TTVA) (1) to the transmission case.
16. Allow the TTVA (1) to rotate clockwise away from
the transmission.
17. Remove the wiring connector (2) from the TTVA
(1).
18. Lift the TTVA (1) straight upward and off the throt-
tle valve shaft (3).
DR AUTOMATIC TRANSMISSION - 48RE - SERVICE INFORMATION 21 - 1295
19. On 4X4 models, disconnect shift rod from transfer
case shift lever.
20. Support rear of engine with safety stand or jack.
21. Raise transmission slightly with service jack to
relieve load on crossmember and supports.
22. Remove the nuts (3) securing rear support (1) to
the transmission crossmember.
23. Remove the bolts(2) holding the rear support (1)
to the transmission (5) remove the rear support.
24. Remove bolts attaching crossmember to frame
and remove crossmember.
25. On 4X4 models, remove transfer case. (Refer to
21 - TRANSMISSION AND TRANSFER CASE/
TRANSFER CASE - REMOVAL)
26. Remove fill tube (7) bracket bolts and pull tube
out of transmission. Retain fill tube seal (6). On
4X4 models, it will also be necessary to remove
bolt attaching transfer case vent tube to converter
housing.
27. Disconnect fluid cooler lines (6, 7) at transmission
(5), diesel engines.
21 - 1296 AUTOMATIC TRANSMISSION - 48RE - SERVICE INFORMATION DR
28. Disconnect fluid cooler lines (4, 5) at transmission
(3), gas engines.
29. Remove all bolts (1) holding the transmission (3)
to the engine adapter (2), diesel engines.
30. Carefully work transmission and torque converter
assembly rearward off engine block dowels.
31. Lower transmission and remove assembly from
under the vehicle.
32. To remove torque converter, remove C-clamp
from edge of bell housing and carefully slide
torque converter out of the transmission.
DR AUTOMATIC TRANSMISSION - 48RE - SERVICE INFORMATION 21 - 1297
33. Remove all bolts (1) holding the transmission (3)
to the engine adapter (2), gas engines.
34. Carefully work transmission and torque converter
assembly rearward off engine block dowels.
35. Lower transmission and remove assembly from
under the vehicle.
36. To remove torque converter, remove C-clamp
from edge of bell housing and carefully slide
torque converter out of the transmission.
21 - 1298 AUTOMATIC TRANSMISSION - 48RE - SERVICE INFORMATION DR
#4
INSTALLATION
1. Check torque converter hub inner and outer diam-
eters and hub drive notches for sharp edges burrs,
scratches, or nicks. Polish the hub and notches
with 320/400 grit paper and crocus cloth if neces-
sary. The hub must be smooth to avoid damaging
pump seal at installation.
2. Lubricate pocket in the rear oil pump seal lip with
transmission fluid.
3. Lubricate converter pilot hub of the crankshaft with
a light coating of Mopar High Temp Grease.
4. Align and install converter in oil pump.
5. Carefully insert converter in oil pump. Then rotate
converter back and forth until fully seated in pump
gears.
6. Check converter seating with steel scale (1) and
straightedge (2). Surface of converter lugs should
be 19mm (0.75 in.) to rear of straightedge when
converter is fully seated.
7. Temporarily secure converter with C-clamp.
8. For vehicles equipped with a diesel engine;
a. Position transmission on jack and secure it
with chains.
b. Check condition of converter driveplate.
Replace the plate if cracked, distorted or dam-
aged. Also be sure transmission dowel pins
are seated in engine block and protrude far
enough to hold transmission in alignment.
c. Raise transmission and align converter with
drive plate and converter housing with engine
block.
d. Move transmission forward. Then raise, lower
or tilt transmission to align converter housing
with engine block dowels.
e. Carefully work transmission forward and over
engine block dowels until converter hub is
seated in crankshaft.
f. Install bolts (5) attaching transmission (3) to
engine adapter (2).
10. Install rear support.
11. Install the rear transmission crossmember.
12. Lower transmission onto crossmember and install
bolts attaching transmission mount to crossmem-
ber.
13. Remove engine support fixture.
14. Install the transfer case, if equipped. (Refer to 21
- TRANSMISSION AND TRANSFER CASE/
TRANSFER CASE - INSTALLATION)
15. Install crankshaft position sensor. (Refer to 14 -
FUEL SYSTEM/FUEL INJECTION/CRANKSHAFT
POSITION SENSOR - INSTALLATION)
16. Connect gearshift cable (1) and throttle cable (gas
engines only) to transmission.
17. For vehicles equipped with a diesel engine, posi-
tion the transmission throttle valve actuator
(TTVA) (1) over the throttle valve shaft (3).
18. Align the D-shaped opening in the bottom of the
TTVA to the throttle valve shaft and install the
TTVA onto the shaft.
19. Install the wiring connector (2) to the TTVA (1).
20. Rotate the TTVA (1) to the transmission case and
install the bolts (2) to hold the TTVA to the trans-
mission.
21. Tighten the bolts to 8.5 N·m (75 in.lbs.).
22. Initialize the TTVA (Refer to 21 - TRANSMIS-
SION/AUTOMATIC - 48RE/THROTTLE VALVE
ACTUATOR - ADJUSTMENTS).
23. Connect cooler lines (6, 7) to transmission (5),
diesel engine.
24. Connect cooler lines (4, 5) to transmission (3),
gas engine.
25. Connect wires to the transmission range sensor
and transmission solenoid connector. Be sure the
transmission harnesses are properly routed.
CAUTION: It is essential that correct length bolts
be used to attach the converter to the driveplate.
Bolts that are too long will damage the clutch sur-
face inside the converter.
26. Install torque converter-to-driveplate bolts.
27. Install converter housing access cover.
28. Install starter motor and cooler line bracket. (Refer
to 8 - ELECTRICAL/STARTING/STARTER
MOTOR - INSTALLATION)
29. Install transmission fill tube (7). Install new seal
(6) on tube before installation.
30. Install any exhaust components previously
removed.
31. Align and connect propeller shaft. (Refer to 3 -
DIFFERENTIAL & DRIVELINE/PROPELLER
SHAFT/PROPELLER SHAFT - INSTALLATION)
32. Adjust gearshift cable and throttle valve cable, if necessary.
33. Install the transfer case skid plate, if equipped.
34. Lower vehicle.
35. Fill transmission with Mopar ATF +4, Automatic Transmission fluid.
1. Check torque converter hub inner and outer diam-
eters and hub drive notches for sharp edges burrs,
scratches, or nicks. Polish the hub and notches
with 320/400 grit paper and crocus cloth if neces-
sary. The hub must be smooth to avoid damaging
pump seal at installation.
2. Lubricate pocket in the rear oil pump seal lip with
transmission fluid.
3. Lubricate converter pilot hub of the crankshaft with
a light coating of Mopar High Temp Grease.
4. Align and install converter in oil pump.
5. Carefully insert converter in oil pump. Then rotate
converter back and forth until fully seated in pump
gears.
6. Check converter seating with steel scale (1) and
straightedge (2). Surface of converter lugs should
be 19mm (0.75 in.) to rear of straightedge when
converter is fully seated.
7. Temporarily secure converter with C-clamp.
8. For vehicles equipped with a diesel engine;
a. Position transmission on jack and secure it
with chains.
b. Check condition of converter driveplate.
Replace the plate if cracked, distorted or dam-
aged. Also be sure transmission dowel pins
are seated in engine block and protrude far
enough to hold transmission in alignment.
c. Raise transmission and align converter with
drive plate and converter housing with engine
block.
d. Move transmission forward. Then raise, lower
or tilt transmission to align converter housing
with engine block dowels.
e. Carefully work transmission forward and over
engine block dowels until converter hub is
seated in crankshaft.
f. Install bolts (5) attaching transmission (3) to
engine adapter (2).
10. Install rear support.
11. Install the rear transmission crossmember.
12. Lower transmission onto crossmember and install
bolts attaching transmission mount to crossmem-
ber.
13. Remove engine support fixture.
14. Install the transfer case, if equipped. (Refer to 21
- TRANSMISSION AND TRANSFER CASE/
TRANSFER CASE - INSTALLATION)
15. Install crankshaft position sensor. (Refer to 14 -
FUEL SYSTEM/FUEL INJECTION/CRANKSHAFT
POSITION SENSOR - INSTALLATION)
16. Connect gearshift cable (1) and throttle cable (gas
engines only) to transmission.
17. For vehicles equipped with a diesel engine, posi-
tion the transmission throttle valve actuator
(TTVA) (1) over the throttle valve shaft (3).
18. Align the D-shaped opening in the bottom of the
TTVA to the throttle valve shaft and install the
TTVA onto the shaft.
19. Install the wiring connector (2) to the TTVA (1).
20. Rotate the TTVA (1) to the transmission case and
install the bolts (2) to hold the TTVA to the trans-
mission.
21. Tighten the bolts to 8.5 N·m (75 in.lbs.).
22. Initialize the TTVA (Refer to 21 - TRANSMIS-
SION/AUTOMATIC - 48RE/THROTTLE VALVE
ACTUATOR - ADJUSTMENTS).
23. Connect cooler lines (6, 7) to transmission (5),
diesel engine.
24. Connect cooler lines (4, 5) to transmission (3),
gas engine.
25. Connect wires to the transmission range sensor
and transmission solenoid connector. Be sure the
transmission harnesses are properly routed.
CAUTION: It is essential that correct length bolts
be used to attach the converter to the driveplate.
Bolts that are too long will damage the clutch sur-
face inside the converter.
26. Install torque converter-to-driveplate bolts.
27. Install converter housing access cover.
28. Install starter motor and cooler line bracket. (Refer
to 8 - ELECTRICAL/STARTING/STARTER
MOTOR - INSTALLATION)
29. Install transmission fill tube (7). Install new seal
(6) on tube before installation.
30. Install any exhaust components previously
removed.
31. Align and connect propeller shaft. (Refer to 3 -
DIFFERENTIAL & DRIVELINE/PROPELLER
SHAFT/PROPELLER SHAFT - INSTALLATION)
32. Adjust gearshift cable and throttle valve cable, if necessary.
33. Install the transfer case skid plate, if equipped.
34. Lower vehicle.
35. Fill transmission with Mopar ATF +4, Automatic Transmission fluid.
#5
ADJUSTMENT
The Transmission Throttle Valve Actuator (TTVA) does not require any mechanical adjustments. All changes in throt-
tle valve position are controlled by the Engine Control Module (ECM).
The TTVA does require an initialization period after the actuator has been removed or replaced. After the actuator
has been removed or replaced, move the iginition to the ON position for thirty (30) seconds. This will allow the ECM
sufficient time to perform the internal calibration procedures to learn the TTVA’s current “zero” position. Once this is
done, check the ECM for diagnostic trouble codes (DTCs). If no DTCs are set relating to the TTVA, the TTVA is fully
calibrated and ready for use.
The Transmission Throttle Valve Actuator (TTVA) does not require any mechanical adjustments. All changes in throt-
tle valve position are controlled by the Engine Control Module (ECM).
The TTVA does require an initialization period after the actuator has been removed or replaced. After the actuator
has been removed or replaced, move the iginition to the ON position for thirty (30) seconds. This will allow the ECM
sufficient time to perform the internal calibration procedures to learn the TTVA’s current “zero” position. Once this is
done, check the ECM for diagnostic trouble codes (DTCs). If no DTCs are set relating to the TTVA, the TTVA is fully
calibrated and ready for use.
#7
wow, that is alot of info, thanks bigdog for all the info, will come in handy next week when i drop the trans, thanks again
Last edited by 2006Mega; 08-09-2010 at 09:00 PM. Reason: cant spell
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