Generac — PMG kit installation disassembly - GTA 200 / 250
Repair & overhaul · PMG (auxiliary exciter) kit
From a Generac service manual — check it applies to your exact model before use.
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Procedure
- Withdraw the back inspection cover that is fastened by screws.
- Withdraw the upper cover of the terminal box, release all the voltage regulator cables and withdraw the box.
- Withdraw the back cover which is fastened to the frame by 4 screws.
- In the side not coupled, install a threaded rod (M20) in the shaft center hole to sustain the rotor.
- Withdraw carefully the exciter stator of the current cover, which is attached by 4 screws.
Tools required
- M20 threaded rod Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Source: Generac 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.