Cummins/Onan 1750DQKB — Frame 7 Bearing Replacement

Repair & overhaul · frame 7 end bearing

For the Cummins/Onan 1750DQKB, from the Cummins/Onan service manual.

Applies to: Cummins/Onan 1750DQKB, Cummins/Onan DQKB, Cummins/Onan DQKC

Procedure

1. Lift slightly on end of rotor shaft and install wooden shims to hold rotor on center with stator.
2. Install bearing onto rotor shaft per bearing kit instruction sheet.
3. Install two threaded studs into end bearing cartridge to aid alignment.
4. Install endbracket to the stator frame using proper screws and lock washers, but do not tighten securely yet.
5. Insert bearing cartridge fasteners through the endbracket into the cartridge housing; remove threaded alignment studs.
6. Lift slightly on endbracket and remove wooden shims.
7. Securely tighten the endbracket fasteners.
8. Tighten the bearing cartridge fasteners to 4.5 ft-lbs (6 N•m).
9. Install the PMG assembly per Permanent Magnet (PMG) Installation (Frame 7).

Full service-parts list: Cummins/Onan 1750DQKB →, Cummins/Onan DQKB →, Cummins/Onan DQKC →

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.

More Cummins/Onan repair guides →