TM 10-3930-659-34 Table 3-1.  Troubleshooting (Con’t). MALFUNCTION TEST OR INSPECTION CORRECTIVE ACTION Step 2.   Inspect rear differential assembly, rear axle rear oscillating support assembly, and rear axle front oscillating support assembly for damaged or worn parts. Remove rear axle (see paragraph 4-48) and rear differential assembly (see paragraph 5-17). Replace damaged rear axle rear oscillating support assembly (see paragraph 4-48) or rear axle front oscillating support assembly (see paragraph 5-17). AXLE 19.  DIFFERENTIAL OR AXLE NOISE IS EXCESSIVE. Step 1.   Perform axle bearing adjustment check (see paragraph 4-50). Replace damaged axle housing assembly or differential assembly (see paragraph 4-50 or 5-17). Replace damaged or worn parts (see paragraphs 5-14 and 5-17). Step 2.   Remove differential drain plug and check for metal particles. Replace damaged axle housing assembly or differential assembly (see paragraph 4-50 or 5-17). Replace damaged or worn parts (see paragraphs 5-14 and 5-17). 20.  OUTER AXLE SEAL LEAKING. Step 1.   Check differential for overfill. Perform troubleshooting on brake system. Step 2.   Perform axle bearing adjustment check (see paragraph 4-50). Replace damaged axle housing assembly or differential assembly (see paragraph 4-50 or 5-17). Replace damaged parts (see paragraph 5-14 and 5-17). BRAKE SYSTEM 21.  POOR BRAKING OR NO BRAKES. Step 1.   Inspect brake pistons for leakage by removing differential fill plug and checking for overfilled differential.  Apply service brakes and check for leakage from fill plug. Replace damaged brake piston seal (see paragraph 4-51). 3-11