Check Points Of Every 500 Hours - Nanni 5.280HE Workshop Manual

03-M Series, WSM

(8) Check Points of Every 500 Hours

Cleaning Water Jacket and Radiator Interior
CAUTION
• Do not remove the radiator cap when the engine is hot. Then
loosen cap slightly to the stop to relieve any excess
pressure before removing cap completely.
1. Stop the engine and let cool down.
2. To drain the coolant, open the radiator drain plug (2) and remove
the radiator cap (1). Then radiator cap (1) must be removed to
completely drain the coolant. And open the drain cock (3).
3. After all coolant is drained, close the drain plug.
4. Fill with clean water and cooling system cleaner.
5. Follow directions of the cleaner instruction.
6. After flushing, fill with clean water and anti-freeze until the coolant
level is just below the port. Install the radiator cap (1) securely.
7. Fill with coolant up to "FULL" (A) mark on the recovery tank (4).
8. Start and operate the engine for few minutes.
9. Stop the engine and let cool. Check coolant level of radiator and
recovery tank (4) and add coolant if necessary.
IMPORTANT
• Do not start engine without coolant.
• Use clean, fresh, soft water and anti-freeze to fill the radiator
and recovery tank.
• When the anti-freeze is mixed with fresh, soft water, the anti-
freeze mixing ratio must be less than 50 %.
• Securely tighten radiator cap.
improperly fitted, water may leak out and the engine could
overheat.
(1) Radiator Cap
(2) Drain Plug
(3) Recovery Tank
(4) Drain Cock
S-29
DIESEL ENGINE
If the cap is loose or
A : Full
B : Low
W1038102
KiSC issued 08, 2012 A