Cummins/Onan RSS100 / RSS200 — Control Relay Replacement Procedure
Repair & overhaul · Control relay(s) K1 and K2
For the Cummins/Onan RSS100 / RSS200, from the Cummins/Onan service manual.
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Before you start
- The transfer switch presents a shock hazard that can cause severe personal injury or death.
Procedure
- Move the operation selector switch on the generator to Stop (Off).
- Disconnect the external battery charger from its AC power source.
- Disconnect the generator starting battery (negative [-] lead first).
- Remove AC power to the automatic transfer switch.
- Remove the transfer switch cabinet door panel.
- Spread the relay clips apart and remove the relay(s) from the relay base(s).
- Install the new relay(s) on the relay base(s), matching the screw head to the hole in the base.
- Make sure the relay clips are securing the relay(s) to the base(s).
- Restore power.
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.