Cummins/Onan — Reassembling the PMG
Repair & overhaul · PMG (permanent magnet exciter)
From a Cummins/Onan service manual — check it applies to your exact model before use.
Applies to: Cummins/Onan MDGDA, Cummins/Onan MDGDB
Procedure
- Reassemble in the reverse of disassembling.
- Torque the rotor center bolt to 40 ft-lbs (54 Nm).
- Ensure the stator leads are at 12 o'clock.
Tools required
- Torque wrench Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- PMG rotor center bolt 40 ft-lbs (54 Nm)
- Stator leads must be at 12 o'clock
Full service-parts list: Cummins/Onan MDGDA →, Cummins/Onan MDGDB →
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.