Cummins/Onan — GENERAL MAINTENANCE

For these Cummins/Onan models: WF, WK.

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Procedure

1. Check all fuel and oil lines for possible leakage.
2. Inspect exhaust lines and mufflers for possible
3. Periodically
4. Inspect water lines and connections for leaks and
5. Inspect electrical wires for security.
6. Remove the three No. 10-24 screws which fasten
7. Remove the two No. 8-32 screws on phenolic cover
8. Pull brush assembly straight up and lift out.
9. For reassembly, reverse procedure.
10. Remove
11. Isolate each diode by disconnecting one end from
12. To checks use an ohmmeter (Figure 15) to measure
13. Check all diodes in accordance with step 3.
14. Use proper size wrenches to hold the body of the
15. 3.
16. O H M M E T E R
17. 6.
18. A L T E R N A T O R T O R Q U E S
19. 000 .
20. :Strip, Terminal Block Marker
21. For l " H o l e

Source: manual:948-0304 Onan WF WK Instruction and Parts Manual (2-1970).pdf. Figures and steps are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.