wsm M6060 User Manual

ENGINE
M6060, M7060, WSM
1-S68
(3) Piston and Connecting Rod
Piston Pin Bore I.D.
1. Measure the piston pin bore I.D. in the horizontal and vertical
directions with a cylinder gauge.
2. If the measurement is more than the allowable limit, replace the
piston.
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Oil Clearance between Piston Pin and Small End Bushing
1. Measure the piston pin O.D. where it contacts the bushing with
an external micrometer.
2. Measure the piston pin bushing I.D. at the connecting rod small
end with an internal micrometer.
3. Calculate the oil clearance.
4. If the oil clearance is more than the allowable limit, replace the
bushing and measure the oil clearance again. If the oil
clearance stays more than the allowable limit, replace the piston
pin.
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Replacement of Small End Bushing
(When removing)
1. Press out the used bushing using a small end bushing replacing
tool. (See page G-53.)
(When installing)
1. Clean a new small end bushing and bore, and apply engine oil
to them.
2. Insert a new bushing onto the tool and press-fit it with a press
so that the seam (4) of bushing position as shown in the figure,
until it is flash with the connecting rod.
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Piston pin bore I.D.
Factory specification
28.000 to 28.013 mm
1.1024 to 1.1028 in.
Allowable limit
28.05 mm
1.104 in.
Oil clearance between
piston pin and small end
bushing
Factory specification
0.020 to 0.040 mm
0.00079 to 0.0015 in.
Allowable limit
0.15 mm
0.0059 in.
Piston pin O.D. Factory specification
28.006 to 28.011 mm
1.1026 to 1.1027 in.
Small end bushing I.D. Factory specification
28.031 to 28.046 mm
1.1036 to 1.1041 in.
(1) Bushing
(2) Small End Bushing Replacing Tool
(3) Connecting Rod
(4) Seam
(A) When Removing
(B) When Installing
(C) 0.26 rad (15 °)
KiSC issued 08, 2013 A

wsm M6060 Specifications

General

Brand	wsm
Model	M6060
Category	Tractor
Language	English