Kohler — Oil Sentry Switch Testing
Testing & diagnosis · Oil Sentry oil pressure monitor switch
From a Kohler service manual covering: Command 11, Command 12.5, Command 14. Check it applies to your exact model before use.
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Procedure
- Connect a continuity tester across the blade terminal and metal case of the switch.
- With 0 psig applied, tester should indicate continuity (switch closed).
- Gradually increase pressure; tester should indicate no continuity as pressure increases through 3.0/5.0 psig.
- Switch should remain open up to 90 psig maximum.
- Gradually decrease pressure; tester should indicate continuity through 3.0/5.0 psig toward 0 psig.
- Replace the switch if it does not operate as specified.
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Switch opens/closes within 3.0/5.0 psig
Source: Kohler 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.