TM 9-2520-246-34 Table 2-2.02. Troubleshooting (Continued) MALFUNCTION TEST OR INSPECTION CORRECTIVE ACTION Test 2. Check piston air cylinder seal for damage or leakage. Step 1. Replace piston air cylinder seal. (Refer to para 4-5e and 4-8m.) Step 2. Add lubricant to level. (Refer to LO 9-2320-209-12/1.) 3. SHIFTING DIFFICULTIES. Test 1. Check for damaged shifter shafts. (Refer to para 2-9b(13).) Replace damaged shifter shafts. (Refer to para 4-5h, 4-5l, 4-8f, and 4-8j.) Test 2. Inspect for bent, twisted, cracked, or broken shifter shaft fork. (Refer to para 2-9b(l5).) Replace shifter shaft fork. (Refer to para 4-5h, 4-5l, 4-8f and 4-8j.) Test 3. Check for loose shifter shaft fork setscrew. Step 1. Tighten shifter shaft fork setscrew. (Refer to para 4-5h.) Step 2. Install safety wire on shifter shaft fork setscrew. Test 4. Inspect synchronizer for wear, breaks, cracks, or damage that would make it unserviceable. (Refer to para 4-16 and 4-17.) Step 1. Replace synchronizers. (Refer to para 4-6c and 4-7e.) Step 2. Replace synchronizer and related parts. (Refer to para 4-6c and 4-7e.) Step 3. Overhaul transfer. (Refer to Chapter 4.) 4. AIR CYLINDER ASSEMBLY NOT ENGAGING. Test 1. Check for loss of air pressure. Step 1. Correct air leak; tighten connections. Step 2. Replace hose(s). Test 2. inspect air cylinder for leaks. Step 1. Replace air cylinder tube gasket. (Refer to para 4-5e and 4-8m.) Step 2. Replace air cylinder piston seal. (Refer to para 4-5e and 4-8m.) Test 3. Inspect for foreign material lodged in air cylinder. Remove, clean, and reinstall air cylinder. (Refer to para 4-5e and 4-8m.) Test 4. Check clutch shifter shaft for breaks, cracks. twists, or broken pieces. (Refer to para 2-9b(13).) Replace clutch shifter shaft. (Refer to para 4-5h and 4-8l.) 2-8