On the right top rear of the frame

On the right top rear of the frame rail there is a proximity sensor mounted。At the auxilary control box circuit “53H” is located on TB28。Measure the circuit “53H” to ground。It should be OVDC.Put a washer on the rear proximity switch and verify that the circuit “53H” changes to 24VDC.Remove the washer.With Body installed on truck.Measure the circuit “53H” to ground It should be OVDC.Verify that the body up limit proximity sensor is mounted on the right top rear frame rail and the metal detection bracket is mounted on the body as show on the Body Ship Loose Group Drawing.Raise the body until the third stage of the hoist cylinders is approximately six inches of the unused hoist cylinder stroke, as show on the Body Ship Loose Group Drawing The circuit “53H” should change from OVDC to 24VDC and the body is prevented from hoisting further.Lower body and shut down truck.Lincoln and Lube Circuit CheckA. Lincoln and Lube System with the PB0337 timer module.With Lincoln and Lube System not filled and servicedNote:Engine is turned off and not running.Disconnect the Lube Pump Solenoid connector&circuit 71 from Lincoln Lube Timer module.With the key switch on and control power switch off, jumper the circuit 712A to circuit 68.Measure circuit wire “68T” at the pump solenoid.