Summary
The major steps in transmission/transaxle rebuilding
are disassembly, cleaning, inspection, and reassembly. To
begin rebuilding a transmission or transaxle, remove the
torque converter and install the unit in a holding fixture.
Before beginning the disassembly procedure, make
sure you have the proper tools and a service manual that
covers the transmission model to be rebuilt. Clean the
outside of the transmission/transaxle thoroughly and check
shaft endplay. Then remove the oil pan, filter, and valve
body. On a transaxle, remove the drive chain or transfer
gears as necessary. Inspect and save all small parts. After
the valve body has been taken off, the front pump (when
used) and internal parts can be removed. Removal of the
parts will vary according to the internal construction of the
transmission or transaxle and whether or not it has a center
support.
Carefully note the condition of all parts as they are
removed from the case. Then remove any other accessory
parts, such as servos, accumulators, and modulators, from
the case.
After disassembly, thoroughly clean all internal parts
and make further inspections for wear or damage. The
converter and oil cooler lines should also be cleaned.
Determine what replacement parts will be needed and
order them.
420 Automatic Transmissions and Transaxles
Install
converter
handles
Make sure converter is
installed completely
Slowly lower
torque converter
Figure 17-52. To install the torque converter, turn the trans-
mission or transaxle until the turbine shaft faces up and lower
the converter into place. Make sure the converter is completely
installed over the shaft splines or it will bind and be damaged when
the transmission or transaxle is reinstalled in the vehicle. (Ford)
Measure torque converter for
full engagement into transmission
Rule
Straightedge
Figure 17-53. After installing the torque converter, make sure it
is completely seated on the input shaft and stator shaft. Also,
make sure the lugs on the pump drive hub are fully engaged in
the front pump. Measuring the installed depth of the torque
converter with a rule and straightedge as shown helps verify
that installation is correct. (DaimlerChrysler)
Caution: Under no circumstances should
you install the torque converter on the fly-
wheel or flexplate before installing the
transaxle or transmission on the engine.The splines
of the transmission shafts, pump, and converter can
be damaged.
Pour about 2-1/8 quarts
of ATF into converter housing
Torque
converter
Check for
hub wear
Figure 17-51. Once the torque converter has been cleaned,
check it out before reinstalling it. The pump drive hub can be
checked for wear, and the internal operation of the converter
can be checked. Add a measured amount of transmission fluid
to the torque converter. (Nissan)