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TM 5-4210-220-34
3-7.
TRANSMISSION-Continued
(10)
Temporarily place third clutch piston (2) in the front piston cavity of center support housing (1). Install
twenty springs (12) into the pockets of the piston. Aline spring retainer (11) on the four ejector pin bosses
of the piston. Compress the springs by forcing the retainer into the recess at the outer edge of the center
support when the retainer rings are installed. Install a new self-locking retainer ring (8) on the ejector pins
of each piston, using installer J24453 Remove the piston from the center support.
(11)
Repeat above procedure to assemble second clutch piston (3) in the rear cavity of support housing.
Install twenty springs (15) into pockets of the piston. Install retainer (14) and self-locking retainers (9).
(12)
Lubricate with petroleum jelly (item 21, Appendix B) and install inner seal ring (4 and 6), and outer seal
ring (5 and 7) onto pistons (2 and 3). The lips of all seal rings must be toward the piston cavities of the
center support.
(13)
Inspect the piston cavities in center support housing (1 ) for any obstruction or foreign material Install
second clutch piston (3) into the rear of the center support. Be sure the lips of both the Inner and outer
seal ring face the bottom of the piston cavity. Force piston to the bottom of cavity. This will ensure proper
clutch clearance.
(14)
Leave the assembled third clutch piston (2) out of the center support until final installation of the center
support assembly.
(15)
Lubricate needle roller bearing (18) and bearing race (17) with petroleum jelly (item 21, Appendix B).
Ensure that the inner lube direction lip of the race on the hub is 0.233 in. (5.9 mm) in length. Install the
race, flat side first, onto the front hub of the center support. To facilitate assembly, keep the race square
with the support housing hub during installation. Forcing may damage the race. Install the needle roller
bearing onto the race.
NOTE
Do not install butt-joint seal rings onto the support hub until the center support and fourth-clutch
assemblies are installed into the transmission.
3-49
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