Kohler — Oil Sentry Installation and Testing
Maintenance · Lubrication System
From a Kohler service manual covering: CV17, CV18, CV20, CV22, CV23, CV25, CV620, CV621, CV630, CV640, CV641, CV670…. Check it applies to your exact model before use.
Browse Kohler generators & specs →
Procedure
- Apply pipe sealant with Teflon to threads of switch.
- Install switch into tapped hole in breather cover.
- Torque switch to 4.5 N·m (40 in. lb.).
- Testing: connect continuity tester across blade terminal and metal case of switch.
- With 0 psi applied, tester should indicate continuity (switch closed).
- Gradually increase pressure; through range of 3-5 psi tester should indicate change to no continuity (switch open).
- Switch should remain open as pressure is increased to 90 psi maximum.
- Gradually decrease pressure through 3-5 psi; tester should indicate change to continuity down to 0 psi.
- Replace 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
- 4.5 N·m (40 in. lb.)
- 3-5 psi switch point
- 90 psi maximum
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.