RM3660EC _51 Engine / Hybrid System _080755 8ZR-FXE LUBRICATION _0391959 OIL PUMP G

8ZR-FXE LUBRICATION  OIL PUMP  INSPECTION  


PROCEDURE

Hide 1.INSPECT OIL PUMP RELIEF VALVE

a.
A374152

Coat the oil pump relief valve with engine oil, then check that it falls smoothly into the valve hole by its own weight.

HINT:

If the oil pump relief valve does not fall smoothly, replace the oil pump assembly.



Hide 2.INSPECT OIL PUMP ROTOR

a.

Check the side clearance.

i.
A374431

Using a feeler gauge and precision straightedge, measure the clearance between the oil pump drive rotor, oil pump driven rotor and precision straightedge.

Standard Side Clearance:

0.030 to 0.070 mm (0.00118 to 0.00276 in.)


Maximum Side Clearance:

0.16 mm (0.00630 in.)


HINT:

If the side clearance is greater than the maximum, replace the oil pump assembly.




b.

Check the tip clearance.

i.
A378030

Using a feeler gauge, measure the clearance between the oil pump drive rotor and oil pump driven rotor tips.

Standard Tip Clearance:

0.04 to 0.16 mm (0.00157 to 0.00630 in.)


Maximum Tip Clearance:

0.35 mm (0.0138 in.)


HINT:

If the tip clearance is greater than the maximum, replace the oil pump assembly.




c.

Check the body clearance.

i.
A378031

Using a feeler gauge, measure the clearance between the oil pump driven rotor and oil pump body.

Standard Body Clearance:

0.11 to 0.19 mm (0.00433 to 0.00748 in.)


Maximum Body Clearance:

0.325 mm (0.0128 in.)


HINT:

If the body clearance is greater than the maximum, replace the oil pump assembly.