Cummins/Onan 1750DQKB — Permanent Magnet (PMG) Removal (Frame 7)
Repair & overhaul · frame 7 PMG
For the Cummins/Onan 1750DQKB, from the Cummins/Onan service manual.
Applies to: Cummins/Onan 1750DQKB, Cummins/Onan DQKB, Cummins/Onan DQKC
Before you start
- The rotor assembly must not be dismantled or the magnetic properties will be destroyed.
- Arcing can ignite battery gas causing severe personal injury; ventilate battery area.
Procedure
- Disconnect the negative (-) battery cable to prevent accidental starting.
- Remove the control housing lower and middle front panels.
- Remove the two front frame separators.
- Remove the three M5X12mm capscrews and lockwashers from the PMG cover, and remove cover.
- Disconnect the PMG wiring harness connector.
- Remove the four bolts and clamps retaining the exciter stator housing to the endbracket.
- Tap the stator housing out of its spigot and carefully remove from generator endbracket.
- Remove the hex head through-bolt from the rotor shaft and pull the complete rotor assembly out; place in a plastic bag.
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.