SHIFTING DIFFICULTIES.

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

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.)

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