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Home›Repair guides›Cummins/Onan›Withdrawing the Generator From the Set

Cummins/Onan 3100 series — Withdrawing the Generator From the Set

Repair & overhaul

For the Cummins/Onan 3100 series, from the Cummins/Onan service manual.

Applies to: Cummins/Onan GGKD

Before you start

  • The hoist, straps and chains must have sufficient capacity.
  • Never withdraw the generator leaving the rotor to hang by the drive discs.

Procedure

  1. Bar the engine until one of the four rotor poles points straight down.
  2. Attach lifting eyes and a hoist of sufficient capacity.
  3. Remove the two through bolts securing the generator to the rubber isolation mounts.
  4. Raise the generator end about one inch (25 mm) and block the engine under the flywheel housing.
  5. Remove the bolts securing the generator drive discs to the flywheel.
  6. Loosen the generator adapter casting bolts, adjust the hoist, remove bolts and pull the generator away.

Tools required

Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.

Full service-parts list: Cummins/Onan GGKD →

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.

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