TM-9-2320-285-24-2
TRUCK TRACTOR, YARD TYPE, 43,500 LB GVW, DED, 4X2, ARMY MODEL M878A1
TECHNICAL MANUAL; ORGANIZATIONAL, DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE MANUAL
OCTOBER 1985
TM-9-2320-285-24-2 - Page 10 of 698
TM 9-2320-285-24-2
3-3.
COOLING SYSTEM TROUBLESHOOTING (CONT)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
2.
COOLING SYSTEM NOT PRESSURIZED
Pressure test radiator (para 2-15a(2)).
a. If pressure drops quickly, radiator has serious leakage. Repair or replace radiator (para 3-5a).
b. If pressure drops slowly, radiator has seepage or slight leakage; repair or replace radiator (para 3-5a).
c. If pressure holds steady for two or more minutes, radiator is not leaking. Refer to TM 9-2815-205-34 for
troubleshooting of the engine cooling system.
3-4
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