[1] – Park machine safely.
[2] – Allow engine to cool.
[3] – Remove wire to oil pressure switch. The oil pressure switch is located on the left side of the engine near the oil filter.
[4] – Unscrew oil pressure switch from block.
[5] – Install connector tool into block.
[6] – Connect hose assembly and pressure gauge.
[7] –
IMPORTANT:
Stop running engine if no oil pressure present.
Start engine. If pressure reading is below 69 kPa (10 psi), STOP engine.
[8] – Run engine approximately 5 minutes to heat oil, then check oil pressure at fast idle.
[9] – When test is complete:
a. STOP engine and allow engine to cool.
b. Remove hose assembly and gauge.
c. Remove connector from engine.
d. Install oil pressure switch and switch wiring lead. Use pipe sealant on switch threads.
Results
– If oil pressure is not within specifications, inspect oil pressure regulating valve parts for wear or damage.
– If oil pressure does not increase, engine may be worn beyond specifications.