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 - Page 25 of 153
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
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