Cummins/Onan — Complete Set Removal (Under-Floor Mount)
Repair & overhaul · generator set mounting
From a Cummins/Onan service manual — check it applies to your exact model before use.
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Before you start
- Dropping the generator set can cause severe personal injury or death.
Procedure
- Park the vehicle on a level surface; set PARK, lock brakes, remove ignition key.
- Use a forklift to support the generator set tray at the points shown; place a wooden block on one fork.
- Raise the forklift to contact the drip tray and apply slight upward pressure.
- Remove the bolts securing the side support to the drip tray and underfloor bracket.
- Lift the generator slightly until the safety catch clears the tray.
- Remove the side support to provide clearance.
- Remove the safety catch and U-shaped hinge pin from each hinge assembly.
- Slowly lower the generator set clear of all obstructions and remove from under the vehicle.
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
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.