Service Manual 200 hours. CUMMINS ONAN generator MDKDS/T/U

Service Manual 200 hours. CUMMINS ONAN generator MDKDS/T/U
1. Run the generator set under load until it is up to operating temperature, stop it, and
disconnect the negative (-) battery cable at the battery.
2. For generator sets with sound shield, remove service door.
3. Remove oil fill plug and open the drain valve. The drain valve has a 3/8 NPT outlet for
connecting a hose fitting to facilitate oil drainage.
WARNING
Crankcase pressure can blow hot engine oil out the fill opening causing, severe
burns. Always stop the generator set before removing the oil fill cap.
NOTICE
If an oil pump-out system is installed, follow the instructions provided with the
pump.
NOTICE
Dispose of oil in accordance with local requirements.
4. Drain used oil into a suitable container.
5. Close the oil drain valve.
6. Remove the old oil filter or filters using a suitable filter wrench (available from Cummins
Onan) and appropriately discard the filter or filters.
7. Remove the old gasket if it does not come off with the filter. Wipe the sealing surface
clean.
8. Apply a film of oil to the new filter gasket and partly fill the new filter with oil so that it
reaches engine parts sooner at startup.
9. Spin the filter on by hand until the gasket just touches the mounting pad and tighten 3/4 of
a turn.
10. Refill the engine with the proper type and amount of engine oil. See previous section for oil
recommendations and Chapter 10 on page 97 for oil capacity.
CAUTION
Too little oil can cause severe engine damage. Too much oil can cause high oil
consumption. Keep the oil level between the high and low beads (or markings) on
the dipstick.
NOTICE
Do not fill the oil through the oil check port (where the dipstick is located) as oil
will backup in the tube.
11. Check the oil level and add or drain oil as necessary.
12. Reinstall service doors on generator sets that have a sound shield.
13. Reconnect the negative battery cable.
14. Run the generator for a few minutes, shut it down, and recheck for proper oil level and
leaks.
15. Dispose of the used oil and oil filter in accordance with local environmental regulations.
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