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4.2
Fit Clearances and Wear Limit of Main Parts
No.
1
Main journal and bearing
2
crank and thrust shoe
connecting
3
bearing
connecting rod large end and
4
crank fillet surfaces
5
piston skirt and cylinder liner hole
piston pin and connecting rod
6
small end bushing hole
first compression ring and ring
7
grooves end surfaces
second compression ring and ring
8
grooves end surfaces
oil ring and ring groove end
9
surfaces
gap
10
compression ring in the
cylinder
gap
11
compression ring in the
cylinder
gap of oil ring in the
12
cylinder
camshaft supporting journal and
13
bushing hole
14
camshaft and thrust plate
valve tappet and cylinder block
15
tappet hole
16
Idling gear shaft and bushing hole
17
idling gear shaft and idler shaft
Description
rod
journal
of
first
measure
under
of
second
the
standard
bore
gauge
diametric
clearance
axial
clearance
and
diametric
clearance
axial
clearance
diametric
clearance
diametric
clearance
Clearance
clearance
clearance
clearance
clearance
diametric
clearance
axial
clearance
diametric
clearance
diametric
clearance
axial
clearance
Clearances
Wear limits
(mm)
(mm)
0.04~0.108
0.30
0.13~0.28
0.40
0.04~0.097
0.30
0.10~0.30
0.60
0.14~0.235
0.35
0.024~0.05
0.10
0.065~0.105
0.30
0.04~0.08
0.30
0.045~0.080
0.30
0.40~0.60
1.50
0.30~0.50
1.50
0.30~0.50
1.50
0.062~0.125
0.25
0.05~0.15
0.40
0.04~0.082
0.20
0.025~0.075
0.20
0.038~0.095
0.25
8
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