3064 and 3066 Engines for Caterpillar Built Machines Caterpillar

Illustration 1	g00530799
Engine oil relief valve

Remove the oil pressure relief valve from the cylinder block. Check the valve and the valve seat for abnormal contact patterns. Inspect the spring for weakness or damage. Replace the oil pressure relief valve, if necessary.

Relief valve opening pressure ... 343 ± 49 kPa (50 ± 7 psi)

Tighten the engine oil relief valve to the following torque. ... 44 to 53 N·m (33 to 40 lb ft)