TM 9-2320-280-34
17-28. CONTROL VALVE AND ACCUMULATOR HOUSING REPAIR (4L80-E) (Cont'd)
g. Accumulator Housing Inspection
1.
Inspect accumulator housing (2) for cracks, breaks, and scoring on bores and sealing surfaces.
Remove minor scoring. Replace if damaged.
2.
Inspect springs (11) and (17) for breaks and distortion. Replace if damaged.
3.
Inspect pistons (4) and (7) for cracks, breaks, and chipped or damaged seal grooves. Replace if
damaged.
4.
Inspect pin (8) for cracks, bends, and damaged grooves. Replace if damaged.
h. Accumulator Housing Assembly
1.
Coat preformed packings (3) and (5) with petrolatum and install on third clutch piston (4).
2.
Install third clutch piston (4) on housing (2).
3.
Coat preformed packing (6) with petrolatum and install on fourth clutch piston (7).
NOTE
Perform step 4 for 1995-1996 transmissions only.
4.
Install fourth clutch piston (7) on pin (8) and install snapring (9) in lower snapring groove.
5.
Install fourth clutch piston (7) and pin (8) in housing (2) and secure with snapring (1) on the
outside housing.
6.
Install springs (17) and (11) on control valve assembly (16).
7.
Install gasket (15), spacer plate (14), and gasket (13) on control valve assembly (16).
8.
Install gasket (12) and accumulator housing (2) on control valve assembly (16) with six
capscrews (10). Tighten capscrews (10) in sequence shown to 97 lb-in (11 Nm).
17-122
Change 2
