Lubrication System 9. Dispose of used oil and fi lter in accordance with local ordinances. OIL SENTRY (if equipped) This switch is designed to prevent engine from starting in a low oil or no oil condition. Oil Sentry may not shut down a running engine before damage occurs. In some applications this switch may activate a warning signal. Read your equipment manuals for more information. Oil Sentry pressure switch is installed in breather cover. On engines not equipped with Oil Sentry installation hole is sealed with a 1/8-27 N.P.T.F. pipe plug. Installation 1. Apply pipe sealant with Tefl on ® (Loctite ® PST ® 592™ Thread Sealant or equivalent) to threads of switch. 2.
Install switch into tapped hole in closure plate. 3. Torque switch to 4.5 N·m (40 in. lb.). Testing Compressed air, a pressure regulator, pressure gauge, and a continuity tester are required to test switch. 1. Connect continuity tester across blade terminal and metal case of switch. With 0 psi pressure applied to switch, tester should indicate continuity (switch closed). 2. Gradually increase pressure to switch. As pressure increases through range of 3-5 psi tester should indicate a change to no continuity (switch open). Switch should remain open as pressure is increased to 90 psi maximum. 3. Gradually decrease pressure through range of 3-5 psi.
Tester should indicate a change to continuity (switch closed) down to 0 psi. 4. Replace switch if it does not operate as specifi ed. 27 66 690 01 Rev. C KohlerEngines.com