Quantcast COOLING SYSTEM DEFICIENCIES

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TM 9-2815-220-24
COOLING SYSTEM DEFICIENCIES
THIS WORK PACKAGE COVERS:
Troubleshooting Table and Diagnostic Tests
INITIAL SETUP:
Tools:
Personnel Required
General mechanic's tool kit (item 121, WP 0176)
Track Vehicle Repairer (2) 63H10
Equipment Conditions:
Engine installed in vehicle.
MALFUNCTION 1:
Engine overheating (evidenced by high oil temperature, low oil pressure, and warning lights
"ON").
PROBABLE CAUSE
CORRECTIVE ACTION
a. Oil cooler screens and fins blocked with
(1) Clean screens and oil cooler finned air
debris.
passages.
NOTE
Inspect for oil leaks and
avoid oil spillage.
b. Restricted cooling air inlets (blocked with
(1) Clean air inlets and grilles.
debris).
c. Oil level overfull.
(1) Refer to WP 0031, Engine Oil Replacement.
d. Seasonal grade of oil improper (too heavy)
(1) Check oil in engine. Drain and refill with
for ambient temperature.
proper grade of oil (refer to pertinent
Vehicle Lubrication Order).
e.
Cooling fan clutch slipping, fan drive failed, (1) Check fan rotation and clutch torque
or blades eroded.
(WP 0045, Cooling Fan Clutch Slip Test).
Inspect fan blades (WP 0053, Cooling Fan
Inspection). Repair as required.
f.
Cooling shroud, baffle, deflector or plates
(1) Inspect and repair as required.
loose, cracked or broken.
g.
Oil cooler thermostatic valve and/or bypass  (1) Remove valves and replace. Go to
valve defective.
WP 0072, Oil Cooler Replacement (Engine
and Transmission).
h.
Engine over-powered due to improper fuel
(1) Replace fuel injection pump (WP 0115,
adjustment.
Fuel Injection Pump Assembly
Replacement).
WP 0017 00-1

 


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