Cylinder Liner

HONING/PISTON CLEARANCE
Using micrometer, measure piston diameter. Calculate cylinder bore diameter to be rebored as follows:

Cylinder bore diameter to be rebored D
Piston diameter as measured A
Piston clearance (B) = 0.02 - 0.04 mm (0.0008 - 0.0015 inch)
Allowance for honing (C) = 0.02 mm (0.0008 inch)

NOTE: D=A+ B-C

NOTE: When any cylinder needs reboring, all other cylinders must also be rebored at the same time. Select oversized piston according to amount of cylinder wear.





CYLINDER BORE DIAMETER,TAPER AND OUT-OF-ROUND
Using a cylinder gauge, measure cylinder bore in thrust and axial directions at two positions as shown in figure.


Cylinder bore diameter limit 84.050 mm (3.3090 inch)
Taper and out-of-round limit 0.10 mm (0.004 inch)


NOTES:
- If any one of six cylinders has to be rebored, rebate all four to the same next oversize. This is necessary for the sake of uniformity and balance.
- If any of the following conditions is noted, rebore cylinder.
1. Cylinder bore diameter exceeds limit.
2. Difference of measurements at two positions exceeds taper limit.
3. Difference between thrust and axial measurements exceeds out-of-round limit.