TM-9-2320-387-24 HMMWV Direct Support & General Support Maintenance Manual Volume 2 Download
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TM 9-2320-387-24-2 Table 14-1. Mechanical Troubleshooting (Cont’d). MALFUNCTION TEST OR INSPECTION I b. Noise in lst, 2nd 3rd, and Reverse Step 1. Check gear unit thrust bearings and races for damage. Replace bearing(s) and races if either is damaged (para. 28-8). Step 2. Inspect gears for damage and wear. Replace damaged or worn components (para. 28-8). Step 3. Inspect front internal gear ring for damage. Replace gear ring if damaged (para. 28-8). c. Noise During Acceleration - Any Gear Check engine and transmission mounts for looseness or damage. Secure or replace mounts (para. 15-3). END OF TESTING! TRANSFER CASE 34. TRANSFER CASE DIFFICULT TO SHIFT Step 1. Check transfer case shift linkage for improper adjustment or damage which would interfere with operation. Adjust or replace shift rod (para. 5-16). Step 2. Check transfer case fluid level. Add fluid (para. 2-12) if necessary. Step 3. Repair or replace transfer case (para. 20-3). END OF TESTING! 35. TRANSFER CASE NOISY Step 1. Check transfer case fluid level. Add fluid (para. 2-12) if necessary Step 2. Repair or replace transfer case (para. 20-3). END OF TESTING! DIFFERENTIAL 36. DIFFERENTIAL NOISY Step 1. Check differential and axle free play tolerance (para. 21-10). Step 2. Replace differential (para. 21-5). END OF TESTING! -- 37. NOISY BRAKES Step 1. Check for worn brake pads. Replace brake pads (para. 7-3) if worn. Step 2. Check for hard spots on brake rotors. Replace brake rotors if hard spots are present (para. 22-3). END OF TESTING! 14-15