1-S76
ZD321, ZD326, ZD331, WSM
ENGINE
(5) Cylinder
Cylinder Wear
1. Measure the I.D. of the cylinder at the six positions (see figure)
with a cylinder gauge to find the maximum and minimum I.D.’s.
2. Get the difference (Maximum wear) between the maximum and
the minimum I.D.’s.
3. If the wear exceeds the allowable limit, bore and hone to the
oversize dimension. (Refer to “Correcting Cylinder”.)
4. Visually check the cylinder wall for scratches. If deep scratches
are found, the cylinder should be bored. (Refer to “Correcting
Cylinder”.)
[D782-E2-ZD]
[D1005-E2-ZD]
[D1305-E3-ZD]
W10343890
Cylinder liner I.D.
Factory spec.
67.000 to 67.019 mm
2.6378 to 2.6385 in.
Allowable limit
67.150 mm
2.6437 in.
Cylinder I.D.
Factory spec.
76.000 to 76.019 mm
2.9922 to 2.9928 in.
Allowable limit
76.15 mm
2.998 in.
Cylinder I.D.
Factory spec.
78.000 to 78.019 mm
3.0709 to 3.0716 in.
Allowable limit
78.15 mm
3.077 in.
(A) Top
(B) Middle
(C) Bottom (Skirt)
(a) Right-angled to Piston Pin
(b) Piston Pin Direction
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