SYSTEM DIAGRAM 
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Toyota Tundra Service Manual > Oil Pump: Inspection
INSPECTION PROCEDURE 1. INSPECT OIL PUMP RELIEF VALVE (a) Coat the relief valve with engine oil. (b) Check that the relief valve falls smoothly into the valve hole by its own weight. If the relief valve is not as specified, replace it. If necessary, replace the timing chain cover sub-assembly. 2. IN ...
