Service Manual — page 328 of 715

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7-12 ENGINE LUBRICATION SYSTEM
Oil Pressure Relief Valve
Oil Pressure Relief Valve Removal
• Remove:
   Oil Screen (see Oil Screen Removal)
   Oil Pressure Relief Valve [A]

Oil Pressure Relief Valve Installation
• Apply   a non-permanent locking agent to the threads of
  the oil pressure relief valve, and tighten it.
  Torque - Oil Pressure Relief Valve: 15 N·m (1.5 kgf·m, 11
              ft·lb)
• Install the oil screen (see Oil Screen Installation).
Oil Pressure Relief Valve Inspection
• Check     to see if the valve [A] slides smoothly when push-
  ing it in with a wooden or other soft rod, and see if it comes
  back to its seat by spring [B] pressure.
                             NOTE
  ○Inspect the valve in its assembled state. Disassembly
    and assembly may change the valve performance.
  If any rough spots are found during above inspection,
  wash the valve clean with a high flash-point solvent and
  blow out any foreign particles that may be in the valve with
  compressed air.
                          WARNING
  Gasoline and low flash-point solvents can be
  flammable and/or explosive and cause severe
  burns. Clean the oil pressure relief valve in a
  well-ventilated area, and take care that there are no
  sparks or flame anywhere near the working area;
  this includes any appliance with a pilot light. Do
  not use gasoline or a low flash-point solvent to
  clean the oil pressure relief valve.
  If cleaning does not solve the problem, replace the oil
  pressure relief valve as an assembly. The oil pressure
  relief valve is precision made with no allowance for re-
  placement of individual parts.