Item
CYLINDER / PISTON / PISTON RING
Cylinder distortion
Limit
STD
Piston to cylinder
clearance
Limit
Cylinder bore
STD
Cylinder measuring position
STD
Piston skirt diameter
Piston measuring position
Cylinder bore wear
Limit
STD
Piston ring
1st
end gap
Limit
STD
2nd
Limit
STD
Piston ring
1st
free end gap
Limit
STD
2nd
Limit
STD
Piston ring
1st
to groove
Limit
clearance
STD
2nd
Limit
1st
Piston ring
groove width
2nd
Oil
1st
STD
Piston ring
thickness
2nd
STD
STD
Piston pin oil
clearance
Limit
Piston pin outside
STD
diameter
Piston pin hole
STD
diameter
Unit
mm (in)
mm (in)
mm (in)
mm (in)
mm (in)
mm (in)
mm (in)
mm (in)
mm (in)
mm (in)
mm (in)
mm (in)
mm (in)
mm (in)
mm (in)
mm (in)
mm (in)
mm (in)
mm (in)
mm (in)
mm (in)
mm (in)
mm (in)
mm (in)
mm (in)
mm (in)
mm (in)
mm (in)
mm (in)
GENERAL INFORMATION
Data
DF60T
0.060 (0.0024)
0.020 – 0.040 (0.0008 – 0.0016)
0.100 (0.0039)
74.000 – 74.020 (2.9134 – 2.9142)
50 (2.0) from cylinder top surface
73.970 – 73.990 (2.9122 – 2.9130)
15 (0.6) from piston skirt end.
0.100 (0.0039)
0.15 – 0.30 (0.006 – 0.012)
0.70 (0.028)
0.20 – 0.35 (0.008 – 0.014)
0.70 (0.028)
Approx. 7.7 (0.30)
6.1 (0.24)
Approx. 10.4 (0.41)
8.3 (0.33)
0.03 – 0.07 (0.001 – 0.003)
0.12 (0.005)
0.02 – 0.06 (0.001 – 0.002)
0.10 (0.004)
1.22 – 1.24 (0.048 – 0.049)
1.51 – 1.53 (0.059 – 0.060)
2.81 – 2.83 (0.111 – 0.112)
1.17 – 1.19 (0.046 – 0.047)
1.47 – 1.49 (0.058 – 0.059)
0.003 – 0.016 (0.0001 – 0.0006)
0.040 (0.0016)
16.995 – 17.000 (0.6691 – 0.6693)
17.003 – 17.011 (0.6694 – 0.6697)
DF70(W)T/70WTH
1-11
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