TM-9-2320-283-20-1
TRUCK TRACTOR, LINE HAUL, 50,000 GVWR, 6X4, M915A1
TECHNICAL MANUAL; ORGANIZATIONAL MAINTENANCE PART 1 OF 3
DECEMBER 1983
TM-9-2320-283-20-1 - Page 424 of 926
TM 9-2320-283-20-1
TROUBLESHOOTING.
2-11.
TROUBLESHOOTING PROCEDURES (Continued).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
105.
EXCESSIVE OR UNEVEN TIRE WEAR (Continued).
Step 3.
Check cold tire pressure.
Inflate to proper pressure.
(Refer to TM 9-2320-283-10).
REAR AXLE
106.
REAR AXLE ASSEMBLY NOT TRACKING PROPERLY.
Step 1.
Check fifth wheel for secure mounting (this step applies only if a trailer is attached).
Tighten and torque (para 3-245).
Step 2.
Check torque rods for looseness and damage.
Notify direct support maintenance.
Step 3.
Check for dragging brakes by jacking vehicle and rotating wheels by hand.
Adjust or replace (para 3-157 or 3-159).
Step 4.
Check wheel bearing adjustment using a pry bar.
No movement is allowable.
Check for damage and
proper lubrication.
Adjust, lubricate, or replace (para 3-207).
Step 5.
Check hubs and drums for damage.
Replace (para 3-207).
BRAKE SYSTEM
107.
AIR PRESSURE LOW.
Step 1.
Check for air exhausting through open or damaged air reservoir drain valves.
a. Close primary or secondary air reservoir draincock.
b. Replace drain valve or primary reservoir (para 3-169 or 3-188).
2-298
Back to Top
