TM 5-3805-280-24-1
System Operational Checks
YES: Go to next check.
COOLANT LEVEL AND
CAUTION: Prevent personal injury, DO NOT
CONDITION IN
remove radiator cap unless engine is cool.
RADIATOR CHECKS
NO: Add coolant if low.
When engine is hot and cap is removed, hot
Flush radiator and engine
coolant or steam will spray out causing
if coolant is dirty or rusty.
serious burns.
Add clean coolant. Go to
Group 9000-04. If coolant
Engine OFF.
is oily, check for hydraulic
or engine oil leaks into
T6488FY
UN19OCT88
Engine cold.
cooling system. Go to
Engine Repair chapter.
Remove radiator cap.
9010
With engine cold, is coolant level just below filler neck in
10
radiator?
2
Is coolant free of oil, foam or rust?
1/1
RADIATOR CAP CHECK
YES: Go to next check.
NO: Replace radiator
cap.
T6488FY
UN19OCT88
T7690AB UN23JAN92
A--Gasket
B--Spring
C--Seal
CAUTION: Prevent personal injury, DO NOT remove radiator cap unless
engine is cool. When engine is hot and cap is removed, hot coolant or
steam will spray out causing serious burns.
Engine stopped and cool.
Remove radiator cap.
If coolant is warmer than surrounding air temperature, is a "whoosh" sound heard
when cap is loosened?
Does cap have a stop position that requires it to be pushed down to remove?
Does cap have a good seal (C) and gasket (A)?
Is spring (B) in good condition?
1/1
3-14
