Oil Filter: Testing and Inspection

Inspection

1. Inspect relief plunger.
Coat the valve with engine oil and check that it falls smoothly into the plunger hole by its own weight.
If it does not, replace the relief plunger. If necessary, replace the front case.
2. Inspect relief valve spring.
Inspect for distorted or broken relief valve spring.

Standard value
Free height : 43.8mm (1.724 in.)
Load : 3.7kg/40.1mm (8.14 lb/1.579 in.)

3. Inspect rotor side clearance.
Using a feeler gauge and precision straight edge, measure the clearance between the rotors and precision straight edge.









If the side clearance is greater than maximum, replace the rotors as a set. If necessary, replace the front case.
4. Inspect rotor tip clearance.
Using a feeler gauge, measure the tip clearance between the inner and outer rotor tips.

Tip clearance
0.025 - 0.069 mm(0.0010 - 0.0027 in.)




If the tip clearance is greater than maximum, replace the rotor as a set.
5. Inspect rotor body clearance.
Using a feeler gauge, measure the clearance between the outer rotor and body.

Body clearance
0.12 - 0.185 mm(0.0047 - 0.0073 in.)




If the body clearance is greater than maximum, replace the rotors as a set. If necessary, replace the front case.

Selection Of Engine Oil
Recommendation : 5W-20/GF4&SM (If not available, refer to the recommended API or ILSAC classification and SAE viscosity number.)
API classification : SL, SM or above
ILSAC classification : GF3, GF4 or above
SAE viscosity grade : Refer to the recommended SAE viscosity number.





NOTE:
For best performance and maximum protection of all types of operation, select only those lubricants which :
1. Satisfy the requirement of the API or ILSAC classification.
2. Have proper SAE grade number for expected ambient temperature range.
Lubricants that do not have both an SAE grade number and API or ILSAC service classification on the container should not be used.

Engine Oil
1. Check engine oil quality.
Check the oil for deterioration, entry of water, discoloring or thinning.
If the quality is visibly poor, replace the oil.
2. Check engine oil level.
After warming up the engine and then 5 minutes after the engine stop, oil level should be between the "L" and "F" marks on the dipstick.
If low, check for leakage and add oil up to the "F" mark.

NOTE:
Do not fill with engine oil above the "F" mark.