S-87
03-M-E3B, 03-M-DI-E3B, 03-M-E3BG WSM
DIESEL ENGINE
Oil Clearance between Piston Pin and Small End Bushing
1. Measure the piston pin O.D. where it contacts the bushing with
an outside micrometer.
2. Measure the small end bushing I.D. with an inside micrometer,
and calculate the oil clearance.
3. If the oil clearance exceeds the allowable limit, replace the
bushing. If it still exceeds the allowable limit, replace the piston
pin.
W1031982
Replacing Connecting Rod Small End Bushing
(When removing)
1. Press out the used small end bushing using a small end bushing
replacing tool. (See page “SPECIAL TOOLS”.)
(When installing)
1. Clean a new small end bushing and bore, and apply engine oil to
them.
2. Using a small end bushing replacing tool, press in a new bushing
taking due care to see that the connecting rod oil hole matches
the bushing hole.
W1032140
Connecting Rod Alignment
NOTEQ
• Since the I.D. of the connecting rod small end bushing is the
basis of this check, check bushing for wear beforehand.
1. Install the piston pin into the connecting rod.
2. Install the connecting rod on the connecting rod alignment tool.
3. Put a gauge over the piston pin, and move it against the face
plate.
4. If the gauge does not fit squarely against the face plate, measure
the space between the pin of the gauge and the face plate.
5. If the measurement exceeds the allowable limit, replace the
connecting rod.
W10314620
Oil clearance between
piston pin and small end
bushing
Factory spec.
0.014 to 0.036 mm
0.00056 to 0.0014 in.
Allowable limit
0.15 mm
0.0059 in.
Piston pin O.D. Factory spec.
25.004 to 25.011 mm
0.98441 to 0.98468 in.
Small end bushing I.D. Factory spec.
25.025 to 25.040 mm
0.98524 to 0.98582 in.
(A) When removing (B) When installing
Connecting rod
alignment
Allowable limit
0.05 mm
0.002 in.
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