Dodge Dakota (ND). Manual — part 1074
AIR CHECKING TRANSMISSION CLUTCH OPERATION
Air-pressure testing can be used to check transmis-
sion clutch operation. The test can be conducted with
the transmission either in the vehicle or on the work
bench, as a final check.
Air-pressure testing requires that the oil pan and valve
body be removed from the transmission. The clutch
apply passages are shown in the Air Pressure Test
Passages graphic.
NOTE: The air supply which is used must be free
of moisture and dirt. Use a pressure of 30 psi to
test clutch operation.
Apply air pressure at each port. If the clutch is func-
tioning, a soft thump will be heard as the clutch is
applied. The clutch application can also be felt by
touching the appropriate element while applying air
pressure. As the air pressure is released, the clutch
should also release.
CONVERTER HOUSING FLUID LEAK
When diagnosing converter housing fluid leaks, two items must be established before repair.
1. Verify that a leak condition actually exists.
2. Determined the true source of the leak.
Some suspected converter housing fluid leaks may not be leaks at all. They may only be the result of residual fluid
in the converter housing, or excess fluid spilled during factory fill or fill after repair. Converter housing leaks have
several potential sources. Through careful observation, a leak source can be identified before removing the trans-
mission for repair. Torque converter seal leaks tend to move along the drive hub and onto the rear of the converter.
Pump cover seal leaks tend to run down the cover and the inside surface of the bellhousing.
Some leaks, or suspected leaks, may be particularly difficult to locate. If necessary, a Mopar
T
approved dye should
be used to locate and confirm a leak.
Air Pressure Test Passages
1 - LOW REVERSE CLUTCH
2 - 4TH CLUTCH
3 - 2ND CLUTCH
4 - OVERDRIVE CLUTCH
5 - UNDERDRIVE CLUTCH
6 - REVERSE CLUTCH
21 - 688
AUTOMATIC TRANSMISSION 545RFE - SERVICE INFORMATION
ND
TORQUE CONVERTER LEAK POINTS
Possible sources of converter leaks are:
1. Leaks at the weld joint around the outside diameter
weld.
2. Leaks at the converter hub weld.
In most cases, a torque converter which is wet from
transmission fluid indicates a leak at one of these
areas.
STANDARD PROCEDURE - ALUMINUM THREAD REPAIR
Damaged or worn threads in the aluminum transmission case and valve body can be repaired by the use of Heli-
Coils™, or equivalent. This repair consists of drilling out the worn-out damaged threads. Then tap the hole with a
special Heli-Coil™ tap, or equivalent, and installing a Heli-Coil™ insert, or equivalent, into the hole. This brings the
hole back to its original thread size.
Heli-Coil™, or equivalent, tools and inserts are readily available from most automotive parts suppliers.
REMOVAL
1. Disconnect the negative battery cable.
2. Raise and support the vehicle
3. Remove any necessary skid plates. (Refer to 13 -
FRAMES & BUMPERS/FRAME/TRANSFER CASE
SKID PLATE - REMOVAL)
4. Mark propeller shaft and axle companion flanges
for assembly alignment.
5. Remove the rear propeller shaft. (Refer to 3 - DIF-
FERENTIAL & DRIVELINE/PROPELLER SHAFT -
REAR/PROPELLER SHAFT - REMOVAL)
6. Remove the front propeller shaft, if necessary.
(Refer to 3 - DIFFERENTIAL & DRIVELINE/PRO-
PELLER SHAFT - FRONT/PROPELLER SHAFT -
REMOVAL)
ND
AUTOMATIC TRANSMISSION 545RFE - SERVICE INFORMATION
21 - 689
7. Remove the engine to transmission collar (2).
8. Remove the exhaust support bracket from the rear
of the transmission.
9. Disconnect and lower or remove any necessary
exhaust components.
10. Remove the starter motor.
11. 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.
12. Disengage the output speed sensor (2) connector
from the output speed sensor.
13. Disengage the input speed sensor (2) connector
from the input speed sensor.
21 - 690
AUTOMATIC TRANSMISSION 545RFE - SERVICE INFORMATION
ND
14. Disengage the transmission solenoid/TRS assem-
bly (2) connector from the transmission solenoid/
TRS assembly.
15. Disengage the line pressure sensor (2) connector
from the line pressure sensor.
16. Disconnect gearshift cable (1) from transmission
manual valve lever (3).
17. Remove the gearshift cable (1) from the shift
cable support bracket (2).
ND
AUTOMATIC TRANSMISSION 545RFE - SERVICE INFORMATION
21 - 691
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст