Kubota L4400, Руководство по ремонту

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1-S54
L4400 , 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.
W11356150
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.
W11373220
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.
W11312720
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.
W11324040
Oil 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
0.10 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 1.49705 in.
(A) When Removing (B) When Installing
Camshaft alignment Allowable limit
0.01 mm
0.0004 in.
Cam height of intake
and exhaust
Factory spec.
33.90 mm
1.3346 in.
Allowable limit
33.85 mm
1.3327 in.
KiSC issued 07, 2007 A
Tractor Manuals Scotland - Please Do Not Copy
Tractor Manuals Scotland