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Old 08-09-2019
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DonB DonB is offline
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Join Date: Jan 2008
Location: Eureka
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According to online forums with old silverleaf replies, the 55 psi only reading is standard with all Cummins engines beginning sometime before 2002. It is a switch, on or off, not an analog reading. One post by someone at Silverleaf in 2003 says:


Quote:
Cummins orginally used a variable sensor which allowed the Silverleaf to read actual Oil Pressure. This switch had problems, it was causing Engine Shutdown, through false readings. So, Cummins went to a HardWired Switch which if your Oil Pressure drops to around 8 PSI or so, it will shutdown the engine.
The result is your Silverleaf will always READ 55 PSI, you could have Cummins change the Switch to the variable, but you take the chance of False Engine Shutdown.
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