ENGINE
L3560, L4060, L4760, L5060, L5460, L6060, WSM
1-S85
Replacement of Idle Gear Bushing
(When removing)
1. Press out the used idle gear bushing with the replacing tool.
(See page G-55.)
(When installing)
1. Clean a new idle gear bushing and idle gear bore, and apply
engine oil to them.
2. Press fit the new bushing with the replacing tool.
Make sure that the bushing end aligns the end of the idle gear.
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[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 touches the bushing with
an external micrometer.
2. Measure the small end bushing I.D. with an internal micrometer.
3. Calculate the oil clearance.
4. If the oil clearance is more than the allowable limit, replace the
bushing.
5. If the oil clearance stays more than the allowable limit, replace
the piston pin also.
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Replacement of Small End Bushing
(When removing)
1. Press out the used small end bushing with the replacing tool.
(See page G-55.)
(When installing)
1. Clean a new small end bushing and bore, and apply engine oil
to them.
2. Make sure that the oil hole of the connecting rod aligns the
bushing hole. Then press fit the new bushing with the replacing
tool.
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(A) When Removing (B) When Installing
Piston pin bore I.D.
Factory specification
25.000 to 25.013 mm
0.98426 to 0.98476 in.
Allowable limit
25.05 mm
0.9862 in.
Oil clearance between
piston pin and small end
bushing
Factory specification
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 specification
25.004 to 25.011 mm
0.98441 to 0.98468 in.
Small end bushing I.D. Factory specification
25.025 to 25.040 mm
0.98524 to 0.98582 in.
(A) When Removing (B) When Installing
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