TM 9-2320-272-24-4
5-57. ADAPTER HOUSING AND FIRST CLUTCH PISTON MAINTENANCE (Contd)
c. Cleaning and Inspection
1.
For general cleaning instructions, refer to para. 2-14.
2.
For general inspection instructions, refer to para. 2-15.
3.
Inspect twenty-six piston return springs (4) for discoloration due to overheating. If discolored,
discard piston return springs (4)
4.
Inspect twenty-six piston return springs (4) for broken coils or coils distorted due to wear. If broken
or distorted, discard piston return springs (4).
NOTE
Perform step 5 if springs pass visual inspection.
5.
Using spring tester, compress each of twenty-six piston return springs (4) to 0.95 in. (24.1 mm) and
check load. If piston return spring (4) does not give the correct load, discard piston return spring (4).
Refer to table 5-16, Spring Data.
Table 5-16. Spring Data.
COLOR
FREE LENGTH
COMPRESSED LENGTH
SPRING
UNDER LOAD
1.28 in.
0.95 in.
13.6-16.4 lb.
Piston return
Solid orange,
yellow stripe
(32.5 mm)
(24.1 mm)
(60.5-72.9 N)
spring
d.
Assembly
NOTE
Ensure seal rings and lips face piston oil pressure side.
Use oil-soluble grease to hold seal rings in place.
1.
Install new outer seal ring (6) and new inner seal ring (7) on first clutch piston (5).
2.
Place first clutch piston (5) in adapter housing (1).
3.
Place twenty-six piston return springs (4) in first clutch piston (5).
4.
Place cupped side of spring retainer (3) over piston return springs (4).
5.
Place compressor tool on spring retainer (3) and arbor press, and compress twenty-six piston return
springs (4).
6.
Install spring retainer (3) with snapring (2).
7.
Remove compressor tool from spring retainer (3).
8.
Install plug (8) in adapter housing (1). Tighten plug (8) 4-8 lb-ft (5-11 Nm).
5-380
