TM 5-2420-230-10
Table 3-1. Operator/Crew Preventive Maintenance Checks and Services (PMCS) for IHMEE. (Continued)
Item to be
Checked or
Not Fully Mission
Item
Serviced
Procedure
Capable If:
No.
Interval
Before
Coolant
5
NOTE
The coolant reservoir must be used to fill
or check coolant level. If coolant is not
visible in inspection glass, refill the system
Coolant level is low.
a. Check coolant level in the coolant
reservoir by using inspection glass.
If vehicle has been operating, use extreme
care to avoid being burned when removing
radiator cap or coolant reservoir cap.
Sudden release of pressure can cause a
steam flash which could seriously injure
personnel. Use heavy rags to protect
hands. Slowly loosen cap to the first stop
and allow pressure to be relieved before
removing cap completely. After use,
securely tighten cap. Failure to comply
may result in injury or death to personnel.
b. Slowly open coolant reservoir fill cap by
turning cap to the left until pressure starts
to release. Wait until pressure is fully
released before removing cap.
c. Visually check coolant reservoir and
radiator for damage or obstruction.
Remove any obstruction.
Fan doesn't move freely.
d. Check fan to ensure it moves freely.
Gasket is torn, missing,
e. Inspect coolant reservoir fill cap for torn,
cracked, or stretched.
missing, cracked, or stretched gasket.
f. Install fill cap on coolant reservoir. Turn
cap to the right until tight.
Class III leak present, or
g. Check coolant reservoir and hoses for
any components are
obvious leaks, damage, or missing
missing or damaged.
components.