TM-9-2320-280-34

TRUCK, UTILITY: M998 SERIES

TECHNICAL MANUAL; DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE

JANUARY 1996

TM-9-2320-280-34 - Page 875 of 1258

1 7 - 2 0 . CENTER SUPPORT REPAIR (4L80-E) (Cont'd)

TM 9-2320-280-34

Change 1

1 7 - 9 1

NOTE

• The center support bolt hole can be reconditioned ONE TIME

ONLY using a reamer and a new service bolt. This is an

optional procedure.

• 1997-1998 transmission center supports are shown. The 1995-1996

transmissions are similar.

3.1. Insert, do not force, gauge pin with chamfer end towards hole in bolt hole (4.1). If gauge pin fits in

hole at least half way, go to step 3.2. If half way or more, replace center support (2).

3.2. Position reamer in bolt hole (4.1) and using light pressure, turn clockwise approximately 4-6 times

or until reamer bottoms out.

Remove reamer and clean center support (2).

4.

Check all oil passages in center support (2) for blockage.

5.

Inspect release springs (10) for signs of distortion or collapsed coils. Replace all springs (10) if any

have distorted or collapsed coils.

6.

Inspect clutch piston (6), spring and retainer (9), and snapring (5) for damage or distortion. Replace

any part if damaged or distorted.