Cummins/Onan — To Replace Fan Coupling
Repair & overhaul
From a Cummins/Onan service manual — check it applies to your exact model before use.
Applies to: Cummins/Onan HDKC, Cummins/Onan HDKCA, Cummins/Onan HDKCB
Procedure
- Remove belt or belts.
- Use a 1/2 inch socket drive to remove coupling from crankshaft end.
- For flexible member, torque eight flange nuts according to specifications.
Tools required
- 1/2 inch socket drive Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Torque eight flange nuts per specifications (p. 13-1).
Full service-parts list: Cummins/Onan HDKC →, Cummins/Onan HDKCA →, Cummins/Onan HDKCB →
Source: Cummins/Onan service manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.