PIN 9P2251 - Caterpillar

All Machines With Precombustion Chamber EnginesSUPPLEMENT: 04/04/88SERVICE MAGAZINE; APRIL 20, 1987; PAGE 10; "Use Improved Heat Start Switch" on all machines with precombustion chamber engines.Disregard this article and make reference to the new article with the same title in this issue.--------------- END SUPPLEMENT ---------------The 8S7713 Heat Start Switch used on many models with precombustion chamber engines is no longer serviced. The 7N4160 Heat Start Switch can be used as a direct replacement. The 7N4160 Heat Start Switch provides better sealing against contaminants. The 7N4160 Heat Start Switch also has a contact action better suited for cranking applications where the starter solenoid is activated directly from the start switch. Such applications do not use a start relay.