Generac — Main rotor disassembly - GTA 315 and AG10 250 / 280 / 315
Repair & overhaul
From a Generac service manual — check it applies to your exact model before use.
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Procedure
- Withdraw the coupling discs.
- Withdraw the coupling flange.
- Withdraw the exciter cover.
- Release the main rotor cables, connected in the exciter rotor diode wheel.
- Withdraw the exciter rotor mechanical lock and withdraw the exciter rotor.
- Withdraw the main rotor from the alternator front side, with the help of a pendulum device.
Tools required
- pendulum device 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.