1-S49
L2800, L3400, WSM
ENGINE
Oil Clearance between Idle Gear Shaft and Idle Gear Bushing
1. Measure the idle gear shaft O.D. with an outside micrometer.
2. Measure the idle gear bushing I.D. with an inside micrometer,
and calculate the oil clearance.
3. If the oil clearance exceeds the allowable limit, replace the
bushing.
4. If it still exceeds the allowable limit, replace the idle gear shaft.
W1030933
Replacing Idle Gear Bushing
(A) (When removing)
1. Press out the used idle gear bushing using an idle gear bushing
replacing tool.
(B) (When installing)
1. Clean a new idle gear bushing and idle gear bore, and apply
engine oil to them.
2. Press in a new bushing using an idle gear bushing replacing tool,
until it is flush with the end of the idle gear.
W1031083
(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.
W1031817
Clearance between idle
gear shaft and idle gear
bushing
Factory spec.
0.025 to 0.066 mm
0.00098 to 0.00260 in.
Allowable limit
0.1 mm
0.0039 in.
Idle gear shaft O.D.
Factory spec.
37.959 to 37.975 mm
1.49445 to 1.49508 in.
Idle gear bushing I.D.
Factory spec.
38.000 to 38.025 mm
1.49606 to 1.49704 in.
Piston pin bore I.D.
Factory spec.
25.000 to 25.013 mm
0.98425 to 0.98476 in.
Allowable limit
25.05 mm
0.9862 in.
KiSC issued 08, 2007 A
Tractor Manuals Scotland - Please Do Not Copy
Tractor Manuals Scotland
