10. Remove the oil pump. Some manufacturers recommend removing the input shaft
before removing the oil pump. However, some transmissions are constructed so
that the input shaft is pressed into the front clutch drum.
Now that the external parts have been removed you can start removing the internal
components, such as the input shaft, bands, clutch packs, planetary gearsets, and
output shaft.
11. Loosen the front band adjuster, slide the band out of the way, remove the
forward clutch packs, front planetary gearset, and input shell as an assembly.
NOTE
Be sure to save all thrust washers, as they come out with these parts.
12. Remove the rear gearsets through the front of the case. The output shaft will
usually come out through the rear of the case.
NOTE
Some clutch packs are held in place by a snap ring, located on the sun gear inside the
input shell. This snap ring must be removed before the clutch pack and other internal
parts can be removed.
13. Some transmissions
have a center support
(
Figure 7-18
). It may
be retained by one or
two case bolts located
either inside or outside
the case. These must
be removed before you
can remove the center
support and the rear
clutches and gearsets.
14. Remove any servos,
accumulators, clutch
apply pistons, and
governors.
NOTE
Many servos and
accumulators are under
strong spring pressure.
Always consult the service
manual before removing any
retaining bolts or rings.
Figure 7-18 - Transmission center support.
With the major components removed, the transmission case is ready to be thoroughly
cleaned out and inspected for wear or damage.
All assemblies that have been removed from the transmission should be disassembled,
inspected, and rebuilt to the manufacturer's specifications. Always replace seals and
gaskets before reassembly. Look for any worn thrust washers and replace them as
required.
Check the condition and proper operation of all vacuum or electronic devices connected
to the unit. The automotive type of torque converter is usually a welded unit and can
NAVEDTRA 14050A
7-21