TM-9-2520-246-34

TRANSMISSION MODEL 3052, NSN 2520-00-347-4520

TECHNICAL MANUAL; DIRECT SUPPORT AND GENERAL SUPPORT; MAINTENANCE MANUAL

MAY 1978
TM-9-2520-246-34

  TM-9-2520-246-34 - Page 26 of 153

TM 9-2520-246-34
Table 2-2.02. Troubleshooting
(Continued)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Test 5. Inspect clutch shifter shaft fork for breaks, cracks, twists, broken out sections, and bends. (Refer to
para 4-5h and 4-8j.)
Replace clutch shifter shaft fork.
Test 6. Check for loose shifter fork setscrew.
Step 1. Tighten loose shifter fork setscrew. (Refer to para 4-5h and 4-8j.)
Step 2. Install safety wire on shifter fork setscrew. (Refer to para 4-5h and 4-8j.)
Step 3. Replace shifter fork, setscrew, and safety wire. (Refer to para 4-5h and 4-8j.)
Test 7. Inspect output sliding clutch for roughness, cracks, breaks and broken out pieces.
Replace output sliding clutch. (Refer to para 4-5h and 4-8j.)
Test 8. Check driving clutch for cracks, breaks, distortion and broken-out pieces.
Replace driving clutch.
(Refer to para 4-5h and 5-8j.)
Test 9. Check clutch driving setscrew for looseness.
Step 1. Tighten clutch driving setscrew. (Refer to para 4-5h and 4-8j.)
Step 2. Install safety wire on clutch driving setscrew. (Refer to para 4-5h and 4-8j.)
Step 3. Replace setscrew and safety wire. (Refer to para 4-5h and 4-8j.)
5. AIR CYLINDER ASSEMBLY NOT DISENGAGING.
Test 1. Check for foreign material lodged in air cylinder.
Remove, clean, and replace air cylinder. (Refer to para 4-5e and 4-8m.)
Test 2. Inspect clutch shaft shifter fork for cracks, breaks, distortion, and missing pieces.
Replace clutch shaft shifter fork. (Refer to para 4-5h and 4-8j.)
Test 3. Inspect shifter fork setscrew for looseness.
Step 1. Tighten setscrew. (Refer to para 4-5h and 4-8j.)
Step 2. Install safety wire on setscrew. (Refer to para 4-5h and 4-8j.)
Step 3. Replace setscrew and safety wire. (Refer to para 4-5h and 4-8j.)
Test 4. Check shifter shaft compression spring for broken coil(s), distortion, breaks, cracks, or
missing coil(s).
Replace spring. (Refer to para 4-5h and 4-8j.)
2-9


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