Cummins/Onan 3100 series — Surge Suppresser Testing and Replacement
Testing & diagnosis · Rotating rectifier assembly
For the Cummins/Onan 3100 series, from the Cummins/Onan service manual.
Applies to: Cummins/Onan GGKD
Procedure
- Remove the suppresser.
- Replace the suppresser if it appears to have overheated.
- Replace the suppresser if ohmmeter readings indicate less than infinite resistance in both directions.
- Torque the terminals to 24 in-lbs (2.7 Nm) when reassembling.
Tools required
- Ohmmeter Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Terminals 24 in-lbs (2.7 Nm)
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.