Cummins/Onan RGA-IN1 — Battery Cable Check
Maintenance · Battery cables
For the Cummins/Onan RGA-IN1, from the Cummins/Onan service manual.
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Procedure
- With starter motor running, check voltage drops:
- From battery negative post (not cable clamp) to cylinder block.
- From battery positive post to battery terminal stud on solenoid.
- Normally less than 0.3 volts. Clean connections if excessive.
Tools required
- voltmeter Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- <0.3 volts
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.