MAINTENANCE AND SERVICING - M150 ENGINE
Form 169017 / 169087 / 169095
149
Revision C
e. Place a drain pan [about 8 U.S. gallons (30 litres)]
under the engine and radiator.
f.
Remove the radiator cap, and open radiator drain
valve (D) on the engine side of the radiator lower
tank. Use a deflector or a hose to prevent coolant
running onto frame.
g. Loosen drain plug (E) in engine block so that
coolant drains. It is located on the left cab-forward
side of the block at the rear of the engine.
h. When system is drained, replace drain plug (with
sealant) in block (E), and close radiator drain
valve (D).
i.
Fill system with clean water through the radiator,
and replace radiator cap.
j.
Open heater shut-off valve (F).
k. Start engine, and turn temperature control knob to
high. Run engine until normal operating
temperature is reached.
l. Stop engine, and drain water out before rust or
sediment settles. See steps d. to g.
m. Close drain valves, and fill system with a solution
of clean water and a heavy duty radiator cleaner.
Follow instructions provided with cleaner.
n. After using cleaner solution, again flush system
with clean water. Inspect radiator, hoses and
fittings for leaks.
o. Close drain valves and fill system through radiator.
Use Ethylene Glycol with SCA equal parts with
high quality, soft, de-ionized or distilled water as
recommended by the supplier. System capacity is
5.3 U.S. Gallons (20 litres).
p. Close radiator cap tightly.
q. Remove cap (B) from recovery tank (A), and add
coolant until half full.
r. Move maintenance platform to working position,
and close engine compartment hood.
B
A
E
F
D
C
