TM-9-2350-311-34-2

CAB, ARMAMENT, SIGHTING AND FIRE CONTROL, ELEVATING AND TRAVERSING SYSTEMS AND ASSOCIATED COMPONENTS HOWITZER, MEDIUM, SELF-PROPELLED, 155MM

TECHNICAL MANUAL; DIRECT AND GENERAL SUPPORT MAINTENANCE MANUAL

SEPTEMBER 1994

  TM-9-2350-311-34-2 - Page 408 of 552

TM 9-2350-311-34-2
9-3 CLUTCH ASSEMBLY - CONTINUED
c. Assembly
1
2
3
4
5
6
7
8
9
10
11
12
13
Set clutch on gearshaft assembly (10) to break away at 250 ± 25 inch-pounds (28.3 ± 2.8 N·m) by torquing
nut (23) located on gearshaft assembly.
Install new gasket (22).
Apply sealing compound to six cap screws (20). Secure mechanical housing (19) to traversing mechanism
(21 ) with six cap screws (20).
Pack ball bearing (17) and coat internal gearing with grease. Do not apply grease to toothed plates of gear-
shaft assembly (10). Install ball bearing on clutch assembly (18).
Install clutch assembly (18), ball bearing (17), and gearshaft assembly (10) as an assembly into mechanical
housing (19). Support gearshaft assembly.
Install new retaining ring (16) into groove in shaft of clutch assembly (18).
Apply sealing compound to six cap screws (14). Install new gasket (15), mechanical housing (4), and six
cap screws.
Install shim(s) (13) as required. Shim thickness must be equal to dimensions F + G - E to give 0.002 to
0.004 inch (0.05 to 0.10 mm) backlash at assembly. Use one shim and peel off laminations to obtain proper
thickness.
To prevent equipment damage, do not overpack bevel gear mechanical housing with grease during
assembly.
Pack ball bearing (12) with grease. Press ball bearing into retaining plate (11) and install on gearshaft as-
sembly (10).
Install new key washer (8) and round nut (9) on gearshaft assembly (10). Bend locking tabs of key washer
into slot in round nut to secure it.
Install new gasket (7), access cover (6), and four cap screws (5).
Check backlash of bevel gears through hole in mechanical housing (4). Adjust shim (13) thickness until
backlash of 0.002 to 0.004 inch (0.05 to 0.10 mm) is obtained.
Install new gasket (3), access cover (2), and two bolts (1).
9-14


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