1-S50
L2800, L3400, WSM
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
(A) (When removing)
1. Press out the small end bushing with a connecting rod small end
bushing replacing tool.
(B) (When installing)
1. Clean a new small end bushing and bore, and apply engine oil to
them.
2. Press fit a new bushing, taking due care to see that the
connecting rod hole matches the bushing hole.
W1032140
Oil clearance between
piston pin and small end
bushing
Factory spec.
0.014 to 0.038 mm
0.00055 to 0.00150 in.
Allowable limit
0.15 mm
0.0059 in.
Piston pin O.D.
Factory spec.
25.002 to 25.011 mm
0.98433 to 0.98468 in.
Small end bushing I.D.
Factory spec.
25.025 to 25.040 mm
0.98523 to 0.98582 in.
KiSC issued 08, 2007 A
Tractor Manuals Scotland - Please Do Not Copy
Tractor Manuals Scotland
