Cylinder Liner Replacement; Cylinder Liner Removal; Cylinder Liner Grade Selection; Cylinder Body Bore Measurement - Isuzu A-4JA1 Workshop Manual

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Cylinder Liner Replacement

Cylinder Liner Removal

1. Insert the cylinder liner remover 1 into the cylinder
body (from the lower side of the cylinder body) unit
it makes firm contact with the cylinder liner.
Cylinder Liner Remover: 5-8840-2039-0
2. Use a bench press 2 to slowly force the cylinder
liner from the cylinder body.
3. Discard the cylinder liner.
Note:
Take care not to damage the cylinder body upper face
during the cylinder liner removal procedure.
4. Measure the cylinder body upper face warpage.
Refer to "Cylinder Body Upper Face Warapage".

Cylinder Liner Grade Selection

Measure the cylinder body inside diameter and select
the proper cylinder liner grade number corresponding to
the cylinder body inside diameter.
Standard Fitting Interference (Reference)
0.001 – 0.019 (0.00004 – 0.00075)
If the cylinder liner fitting interference is too small,
engine cooling efficiency will be adversely affected.
If the cylinder liner fitting interference is too large, it will
be difficult to insert the cylinder liner into the cylinder
body.

Cylinder Body Bore Measurement

1. Take measurements at measuring point 1 across
positions ("W – W"), ("X – X"), (Y – Y) and (Z – Z).
Measuring Point 1 : 98 mm (3.86 in)
2. Calculate the average value of the four
measurements to determine the correct cylinder
grade.
Cylinder Liner Grade
Nominal
Dimension
φ 95
ENGINE ASSEMBLY ( 2 )
(A-4JA1, A-4JB1)
Cylinder Body
Bore Diameter
95.001 – 95.010
(3.74019 – 3.74055)
95.011 – 95.020
(3.74059 – 3.74094)
95.021 – 95.030
(3.74098 – 3.74133)
95.031 – 95.040
(3.74138 – 3.74173)
mm(in)
Liner Grade
1
2
3
4
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