Cummins/Onan — Adjusting the Reverse Current (Charge) Relay
Adjustments · Reverse current relay
From a Cummins/Onan owner's manual — check it applies to your exact model before use.
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Procedure
- Clean the contact points with hard finish paper.
- Replace the relay with a new one if cleaning does not remedy the trouble.
- Set spring tension so points open at 12.6 volts and close at 15.4 volts.
Tools required
- Test bench Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Points open at 12.6 volts
- Points close at 15.4 volts
Source: Cummins/Onan owner's 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.