LM 286 EN 30012013.book - Oy LAIMU Ab

User manual LM 286
5.12 Maintenance every 2,000 operating hours
Also carry out maintenance items 1‐25.
5.12.1 Cooling system cleaning (29)
The thorough cleaning of the cooling system is performed as follows:
Draining and washing:
1. Open the radiator filler plug.
2. Open the cylinder block drain plug (A) and disconnect the hoses going to
the heater. Also disconnect the water hoses going to the radiator from the
radiator. Drain the old coolant into a container.
Figure 72.
3. Empty the coolant pump by running the engine with the starter for 2–3 s.
4. Clean the drain plug (A) and reinstall. Tighten carefully.
5. Carefully connect and tighten the hoses you disconnected earlier.
Info!
Ensure the appropriate disposal of the old coolant. Never pour old
coolant onto the ground!
Filling:
6. Fill the system completely with coolant (50% clean water and 50% antifreeze)
through the filler plug.
Figure 73.
7. Close the filler plug carefully.
8. Fill the expansion tank with coolant to the Min. marking.
9. Run the engine to the normal operating temperature.
10. Check that the expansion tank fluid level is between the Min./Max.
markings. Add or drain fluid as necessary.
If you wish to flush the cooling system, use clean water for the first fill
and redo items 1–9.
Huomaa! Notera! Note!
Always use coolant for the final fill!
Add coolant into the expansion tank as necessary.
Figure 74.
Info!
Always use a mix of water and anti‐freeze as coolant in a ratio of 1:1
(50% water + 50% anti‐freeze).
Besides the antifreezing compound, the anti‐freeze includes vital
compounds that prevent engine and cooling system corrosion.
The volume of the cooling system is approximately 12 l.
Varoitus! Varning! Warning!
Never pour cold coolant into a hot engine. The cap of a hot, overpressurised
system must be opened very carefully.
60 06 Maintenance Rev. 30.1.2013