Kubota L4400 Workshop Manual page 129

L4400 , WSM
Tractor Manuals Scotland
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.
Oil clearance between
idle gear shaft and idle
gear bushing
Idle gear shaft O.D.
Idle gear bushing I.D.
Replacing Idle Gear Bushing
(When removing)
1. Press out the used idle gear bushing using an idle gear bushing
replacing tool.
(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.
(A) When Removing
Camshaft Alignment
1. Support the camshaft with V blocks on the surface plate at both
end journals.
2. Set a dial indicator with its tip on the intermediate journal.
3. Measure the camshaft alignment.
4. If the measurement exceeds the allowable limit, replace the
camshaft.
Camshaft alignment
Cam Height
1. Measure the height of the cam at its highest point with an outside
micrometer.
2. If the measurement is less than the allowable limit, replace the
camshaft.
Cam height of intake
and exhaust
Tractor Manuals Scotland - Please Do Not Copy
1-S54
0.025 to 0.066 mm
Factory spec.
0.00098 to 0.00260 in.
0.10 mm
Allowable limit
0.0039 in.
37.959 to 37.975 mm
Factory spec.
1.49445 to 1.49508 in.
38.000 to 38.025 mm
Factory spec.
1.49606 to 1.49705 in.
(B) When Installing
0.01 mm
Allowable limit
0.0004 in.
33.90 mm
Factory spec.
1.3346 in.
33.85 mm
Allowable limit
1.3327 in.
ENGINE
W11356150
W11373220
W11312720
W11324040
KiSC issued 07, 2007 A