Oil Pump: Testing and Inspection

2TR-FE LUBRICATION: OIL PUMP:

INSPECTION





1. REMOVE OIL PUMP RELIEF VALVE
(a) Coat the relief valve with engine oil and drop it into the relief valve hole.
(b) Check that the relief valve falls in smoothly by its own weight.
If it does not, replace the relief valve. If necessary, replace the timing chain cover.





2. INSPECT OIL PUMP ROTOR SET
(a) Install the rotors to the timing chain cover with the rotors' marks facing outward. Check that the rotors revolves smoothly.





3. INSPECT ROTOR TIP CLEARANCE
(a) Check the tip clearance.
(1) Using a feeler gauge, measure the clearance between the drive and driven rotor tips, as shown in the illustration.
Tip clearance:





If the tip clearance is greater than the maximum, replace the timing chain cover.





4. INSPECT ROTOR BODY CLEARANCE
(a) Check the body clearance.
(1) Using a feeler gauge, measure the clearance between the timing chain cover and driven rotor, as shown in the illustration.
Body clearance:





If the body clearance is greater than the maximum, replace the timing chain cover.





5. INSPECT ROTOR SIDE CLEARANCE
(a) Check the side clearance.
(1) Using a feeler gauge and precision straight edge, measure the clearance between the rotors and precision straight edge, as shown in the illustration.
Side clearance:





If the side clearance is greater than the maximum, replace the timing chain cover.





6. INSTALL OIL PUMP ROTOR SET
(a) Coat the oil pump gear set with engine oil and place it into timing chain cover with the marks facing outward (oil pump cover side). Check that the rotors revolve smoothly.