TM 5-3825-229-14&P
4-46. SERVICE ENGINE (cont)
e.
Flushing Engine (cont).
(3)
Disconnect hoses (1) at cover (2).
(4)
Close all drain plugs.
CAUTION
Do not exceed 50 kPa (7 psi) of air pressure.
Excessive air pressure will damage cooling system.
(5)
Attach flushing gun to water outlet (2). Restrict
engine coolant inlet (3) until system fills with
water. Then apply 50 kPa (7 psi) air pressure
gradually. Repeat process until water from
cylinder block flow is clean.
f.
Flushing Radiator.
(1) Drain cooling system (Refer to para. c. above)
and disconnect radiator hoses (1) at thermostat
cover (2).
(2) Secure flushing gun in lower radiator hose with
hose clamp (3).
(3) Fill radiator (4) with water. Be sure filler cap (5) is
on tight. Direct upper hose away from engine to
minimize collection of water around engine.
CAUTION
Do not exceed 50 kPa (7 psi) of air pressure.
Excessive air pressure will damage cooling system.
(4) Gradually apply 50 kPa (7 psi) air pressure.
(5) Shut off air pressure. Fill radiator with water again
and apply air pressure. Repeat until water comes
out clean.
g.
Fill Cooling System.
(1)
Close all drains. Install thermostat (para. 4-46A).
(2)
Loosen one water pump plug (2).
Flushing Radiator
4-92
