Inspection

NOTE: Inspect the balancer shafts removing the right side cover and the balancer gear case.





1. Push the balancer shaft firmly away from the dial indicator, and zero the dial against the front end of the balancer shaft, then pull the balancer shaft firmly back toward the indicator.

Front Balancer Shaft End Play
Standard (New): 0.10 - 0.40 mm (0.004 - 0.016 inch)

- If end play is excessive, inspect the retainer and thrust surfaces on the balancer shaft.





Rear Balancer Shaft End Play
Standard (New): 0.04 - 0.15 mm (0.002 - 0.006 inch)

- If end play is excessive, inspect the thrust washer and thrust surfaces on the driven gear and oil pump body.

NOTE: The thickness of the retainer (front) and thrust washer (rear) are fixed and must not be changed either by grinding or shimming.

2. Remove the balancer shafts.

NOTE: Clean the balancer shafts..

3. Inspect the surface of the balancer shaft journal and balancer bearing.
4. Replace the bearing or balancer shaft if there is wear, damage or discoloration on the surface of the bearing or the balancer shaft journal. When replacing the rear No. 1 bearing, be sure to replace the oil pump housing with a new one.

NOTE: A mirror-like surface is normal.





5. Measure taper at the edges of each journal.
The difference between measurements on each journal must not exceed the standard.

Journal Taper
Standard (New): 0.005 mm (0.0002 inch) max





6. Measure runout on the No. 2 journal of each balancer shaft to make sure the balancer shafts are not bent.

Balancer Shaft Total Indicated Runout
Standard (New): 0.02 mm (0.001 inch) max
Service Limit: 0.03 mm (0.001 inch)








7. Measure the diameters of the balancer shaft journals.

Journal Diameter
Standard (New):
No. 1 journals:
Front: 42.722 - 42.734 mm (1.6820 - 1.6824 inch)
Rear: 20.938 - 20.950 mm (0.8243 - 0.8248 inch)
No. 2 front and rear journals: 38.712 - 38.724 mm (1.5241 - 1.5246 inch)
No. 3 front and rear journals: 34.722 - 34.734 mm (1.3670 - 1.3675 inch)
Service Limits:
No. 1 journals:
Front: 42.71 mm (1.681 inch)
Rear: 20.92 mm (0.824 inch)
No. 2 front and rear journals: 38.70 mm (1.524 inch)
No. 3 front and rear journals: 34.71 mm (1.367 inch)

8. Remove the crankshaft, the pistons and the other parts from the block, then clean the balancer shaft journal bearings in the block and the oil pump housing with a clean shop towel.
9. Check the surface of the hearings; if there is wear, damage or discoloration, replace the bearings or the oil pump housing.





10. Measure the inner diameters of the balancer shaft journal bearings.

Bearing Inner Diameter
Standard (New):
No. 1 journals:
Front: 42.800 - 42.820 mm(1.6850 - 1.6858 inch)
Rear: 21.000 - 21.013 mm (0.8268 - 0.8273 inch)
No. 2 front and rear journals: 38.800 - 38.820 mm (1.5276 - 1.5283 inch)
No. 3 front and rear journals: 34.800 - 34.820 mm (1.3701 - 1.3709 inch)
Service Limits:
No. 1 journals:
Front: 42.83 mm (1.686 inch)
Rear: 21.02 mm (0.828 inch)
No. 2 front and rear journals: 38.83 mm (1.529 inch)
No. 3 front and rear journals: 34.83 mm (1.371 inch)

11. Calculate the shaft-to-bearings oil clearances.


BEARING I.D.-JOURNAL O.D.=OIL CLEARANCE
Bearing to Shaft Oil Clearance
Standard (New):
No. 1 front journal, No. 3 front and rear journals: 0.066 - 0.098 mm (0.0026 - 0.0039 inch)
No. 2 front and rear journals: 0.076 - 0.108 mm (0.0030 - 0.0043 inch)
No. 1 rear journal: 0.050 - 0.075 mm (0.0020 - 0.0030 inch)
Service Limit:
No. 1 front journal, No. 3 front and rear journals: 0.12 mm (0.005 inch)
No. 2 front and rear journals: 0.13 mm (0.005 inch)
No. 1 rear journal: 0.09 mm (0.004 inch)