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4-20 ENGINE LUBRICATION SYSTEM
Oil Pump Sprocket, Oil Pump and Oil Pressure Relief Valve
Oil Pressure Relief Va lve Inspection
•
Remove:
Oil Pan (see Oil Pan Removal)
Relief Valve [A]
•
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] force.
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
Clean the relief valve in a well-ventilated area, and
take care that there is no spark or flame anywhere
near the working area. Because of the danger of
highly flammable liquids, do not use gasoline or low
-flash point solvent.
If cleaning does not solve the problem, replace the relief
valve as an assembly. The relief valve is precisely made
with no allowance for replacement of individual parts.
•
Apply a non-permanent locking agent to the relief valve.
•
Install the relief valve.
Torque - Oil Pressure Relief Valve: 15 N·m (1.5 kgf·m, 11 ft
·lb)
Oil Pump Sprocket Chain Removal
•
Split the crankcase (see Engine Bottom End chapter).
•
Remove the camshaft chain [A] and the oil pump sprocket
chain [B].