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8 - 21
2
Measurement Procedures (continued)
b
Measurement of eccentric wear of timing plate surface
of cylinder block
104
- use a contour and roughness
tester to measure the wear at points
A
and
B
. For
tolerance, see Wear Limits Table, item
1
(h).
c
Measurement of bore hole diameter of cylinder block
104
- use a 1 mm full scale dial gauge
C
and a cylinder
gauge
D
of measuring range 10 - 18 mm. Set up the dial
gauge by inserting the cylinder gauge into a standard 17
mm ring gauge. Zero the dial scale.
Transfer the cylinder gauge to one of the cylinder bore
holes and measure the diameter 10 mm down (point
E
)
and then 15 mm down (point
F
). Rotate the cylinder
gauge two or three times at each end point and make a
note of the minimum reading. For tolerances, see Wear
Limits Table, item
1
(h).
Repeat for the other eight cylinder bores.
d
Measurement of wear on sliding surface of timing plate
109 - use a contour and roughness tester to measure
the wear at points
G
and
H
. For tolerances, see Wear
Limits Table, item
1
(k).
e
Measurement of lateral ball joint wear between piston
J
and shoe
K
. For tolerances see Wear Limits Table, item
1
(j).
Section F
Transmission
9803/6020
Section F
8 - 21
Issue 1
Track Gearbox
299620
299630
299640
299650
C
C
E
E
F
F
D
D
G
G
H
H
K
K
J
J
Summary of Contents for JS70
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