Piston And Connecting Rod - wsm M6040 Workshop Manual

M6040, M7040, WSM

(3) Piston and Connecting Rod

Piston Pin Bore I.D.
1. Measure the piston pin bore I.D. in both the horizontal and
vertical directions with a cylinder gauge.
2. If the measurement exceeds the allowable limit, replace the
piston.
Factory specification
Piston pin bore I.D.
Allowable limit
Oil Clearance between Piston Pin and Small End Bushing
1. Measure the O.D. of the piston pin where it contacts the bushing
with an outside micrometer.
2. Measure the I.D. of the piston pin bushing at the connecting rod
small end with a cylinder gauge.
Calculate the oil clearance.
3. If the clearance exceeds the allowable limit, replace the
bushing.If it still exceeds the allowable limit, replace the piston
pin.
Factory specification
Oil clearance between
piston pin and small end
bushing
Allowable limit
Piston pin O.D. Factory specification
Small end bushing I.D. Factory specification
1-S72
ENGINE
28.000 to 28.013 mm
1.1024 to 1.1029 in.
28.05 mm
1.1043 in.
9Y1210143ENS0114US0
0.020 to 0.040 mm
0.0008 to 0.0016 in.
0.15 mm
0.0059 in.
28.006 to 28.011 mm
1.1026 to 1.1028 in.
28.031 to 28.046 mm
1.1036 to 1.1042 in.
9Y1210143ENS0115US0
KiSC issued 07, 2012 A