Generac — Bearings replacement disassembly - GTA 315 and AG10 250 / 280 / 315
Repair & overhaul · back bearing
From a Generac service manual — check it applies to your exact model before use.
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Procedure
- Withdraw the back fan cover.
- Disconnect the voltage regulator cables F+ and F-, located in the alternator terminal box.
- Release the main rotor cables, connected in the rectifier bridge of the exciter rotor.
- Withdraw the back cover screws fastened in the frame and withdraw this cover along with the exciter stator.
- Remove the exciter rotor according to item 13.2.2 of this document.
- Remove the bearing attached to the back shaft tip with a bearing extractor device; it shall be discarded.
Tools required
- bearing extractor 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.