S-68
V3307-DI-T-E2B, WSM
ENGINE
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.
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Replacing Small End Bushing
(When removing)
1. Press out the used bushing using a small end bushing replacing
tool. (Refer to “5. SPECIAL TOOLS” at “GENERAL” section.)
(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 (1) of bushing position as shown in the figure, until
is flash with the connecting rod.
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Connecting Rod Alignment
NOTE
Q
• Since the I.D. of the connecting rod small end bushing is the
basis of this check, check the bushing for wear beforehand.
1. Remove the piston pin from the piston.
2. Install the piston pin in the connecting rod.
3. Install the connecting rod on the connecting rod alignment tool.
4. Put a gauge over the piston pin, and move it against the face
plate.
5. If the gauge does not fit squarely against the face plate, measure
the space between the pin of the gauge and the face plate.
6. If the measurement exceeds the allowable limit, replace the
connecting rod.
W1066581
Oil clearance between
piston pin and small end
bushing
Factory spec.
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 spec.
28.006 to 28.011 mm
1.1026 to 1.1027 in.
Small end bushing I.D.
Factory spec.
28.031 to 28.046 mm
1.1036 to 1.1041 in.
(1) Seam
(2) Oil Hole
(3) Mark
(A) When Removing
(B) When Installing
(C) 0.26 rad (15 °)
Connecting rod
alignment
Allowable limit
0.05 mm
0.002 in.
KiSC issued 01, 2009 A
