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