3.6. Lubrication and Maintenance Operations
After 2,000 hours of operation (after 2 years)
3.6.25. Checking and adjusting valve clearance
Call CUMMINS service department to adjust the engine •
valves. Next valve adjustment will follow periodically after
2000 hours or after two years - for contact points, please re-
fer to Engine Operation and Maintenance Manual.
3.6.26. Engine coolant exchange
How to drain cooling circuit:
Before you drain the coolant from the
cooling circuit let the engine run for 5
minutes for the liquid temperature to
reach 82°C (180°F).
Do not open overpressure plug before
coolant temperature drops below 50 °C
(122 °F). If you open overpressure plug
the liquid may splash out causing scald.
Stop the engine.
Open the cooling system by removing the overpressure •
plug (1) on the expansion tank.
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