1
2
3
4
Do not attempt to drain coolant
from a hot engine.
Allow engine to completely cool.
Open radiator cap covers and, using a
rag (item 36, appx D), slowly remove
radiator caps from both radiators.
Remove radiator access plates (1). At-
tach short length of rubber hose to each
radiator draincock to route antifreeze to
clean bucket placed underneath. Open
draincocks (2) in bottom of both
radiators.
Open two draincocks (3) at accessory
end of engine.
TM 9-2350-238-10
ENGINE COOLING SYSTEM– CONTINUED
ADDING COOLANT–CONTINUED
3 Replace radiator caps and make sure
covers are closed.
4 Run engine for at least 5 minutes and
then check coolant level. Level should be
approximately 1/2 in. (1.3 cm) below
base of fill neck.
5 If engine overheats and/or there is an ex-
cessive loss of coolant, surge tank
pressure cap may be defective. Notify
unit maintenance personnel.
DRAINING COOLANT
3-30
