Cylinder Liner Bore Measurement; Cylinder Liner Projection Inspection - Isuzu A-4JA1 Workshop Manual

ENGINE ASSEMBLY ( 2 )
2
56
X
Y Y
X
1
1
Cylinder Body Height (Reference)
247.945 – 248.105 (9.7616 – 9.7679)
4. Reinstall the cylinder liner.
Refer to "Cylinder Body Bore Measurement".
5. Reinstall the cylinder body dowel.

Cylinder Liner Bore Measurement

Use a cylinder indicator to measure the cylinder bore at
measuring point 1 in the thrust X – X and axial Y – Y
directions of the crankshaft.
Measuring Point 1 : Maximum wear portion
[11 – 15 mm (0.43 – 0.59 in)]
If the measured value exceeds the specified limit, the
cylinder liner must be replaced.
Cylinder Liner Bore
Standard
93.021 – 93.060 (3.662 – 3.663)
Note:
The inside of the dry type cylinder liner is chrome
plated. It cannot be rebored or honed.
If the inside of the cylinder liner is scored or scorched,
the cylinder liner must be replaced.

Cylinder Liner Projection Inspection

1. Hold a straight edge 1 along the top edge of the
cylinder liner to be measured.
2. Use a feeler gauge 2 to measure each cylinder liner
projection.
Cylinder Liner Projection
0 – 0.10 (0 – 0.0039)
The difference in the cylinder liner projection height
between any two adjacent cylinders must not
exceed 0.03 mm (0.0012 in).
Standard
Limit
93.10 (3.665)
Standard
mm(in)
mm(in)
mm(in)