MacDon M155 Operators Manual - Manual (Page 330)

MAINTENANCE AND SERVICING
6. Close the heater shut-off valve (A) and disconnect
hose on heater side of valve.
7. Open valve to drain the block.
8. When system is drained, reattach hose on valve (A).
Figure 5.101: Engine Cooling System
9. Close radiator drain valve (A) at the bottom of the
engine side of the radiator lower tank. (Frame has
been removed from illustration for clarity.)
10. Fill system with clean water through the radiator and
replace radiator cap.
Figure 5.102: Engine Cooling System
11. Open heater shut-off valve (A).
12. Start engine and turn temperature control knob to
HIGH. Run engine until normal operating temperature
is reached.
13. Stop the engine and drain water out before rust or
sediment settles. Repeat coolant removal procedure.
14. Close drain valves and fill system with a solution of
clean water and a heavy duty radiator cleaner. Follow
instructions provided with cleaner.
15. After using cleaner solution, again flush system with
clean water. Inspect radiator, hoses, and fittings
for leaks
16. Close drain valves and fill system. Refer to Adding
Coolant, page 315 .
17. Close the platform. Refer to 5.5.2 Closing Platforms
(Standard Position), page 270 .
18. Close the hood. Refer to 5.4.4 Closing Hood (Highest
Position), page 268 .
Figure 5.103: Engine Cooling System
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