TM-9-2320-283-34-1
TRUCK TRACTOR, LINE HAUL, 50,000 GVWR, 6X4, M915A1
TECHNICAL MANUAL; DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE
DECEMBER 1983
TM-9-2320-283-34-1 - Page 54 of 624
TM 9-2320-283-34-1
TROUBLESHOOTING
2-7.
TROUBLESHOOTING PROCEDURES (Continued).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
19.
LUBRICANT LEAKING.
Step 1.
Check oil seals at yoke and flanges for wear or damage.
Replace oil seal (para 3-65 and para 3-66 for forward-rear, para 3-74 for rear-rear).
Step 2.
Check carrier bolts for looseness and check sealant for leakage.
Remove carrier and apply new sealant (para 3-69 for forward-rear, para 3-75 for rear-rear, para
3-67 for differential carrier cover).
Step 3.
Check pump housing seal for damage
Replace pump housing seal (para 3-67).
Step 4.
Check
or cracked or damaged axle housing.
Replace or repair axle housing (para 3-63 and para 3-64 for forward-rear, para 3-72 and para 3-73 for
rear-rear).
BRAKE SYSTEM
20.
AIR PRESSURE TOO HIGH.
Step 1.
Check air compressor governor adjustment.
Adjust air compressor governor (para 3-83).
Step 2.
Check air compressor governor for stuck or damaged internal parts.
Replace or repair air compressor governor (para 3-84 and para 3-85).
Step 3.
Refer to air compressor troubleshooting (TM 9-2815-225-34&P)
2-10
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