Cummins/Onan — Rotor Reassembly
Repair & overhaul · Generator rotor
From a Cummins/Onan service manual — check it applies to your exact model before use.
Applies to: Cummins/Onan HDKA, Cummins/Onan HDKAQ, Cummins/Onan HDKAR
Before you start
- The drive disk will be damaged if bolts are tightened and it is not properly centered.
Procedure
- Reassemble the rotor and generator set using the reverse of disassembly.
- Regrease the O-ring using moly grease only.
- Apply required torque value shown in Figure 4-9 (drive disk bolts 25-29 N-m).
- Center the disk accurately before tightening the drive disk bolts.
Tools required
- Torque wrench Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Drive disk to hub bolts torque 25-29 N-m
Full service-parts list: Cummins/Onan HDKA →, Cummins/Onan HDKAQ →, Cummins/Onan HDKAR →
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.