Kubota M5040 Workshop Manual page 185

M5040, M6040, M7040, WSM
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 bushings I.D. with an inside micrometer,
and calculate the oil clearance.
3. If the oil clearance exceeds the allowable limit, replace the
bushing.
Factory spec.
Oil clearance between
idle gear shaft and idle
gear bushing
Allowable limit
Idle gear shaft O.D. Factory spec.
Idle gear bushing I.D. Factory spec.
Replacing Idle Gear Bushing
(When removing)
1. Using an idle gear bushing replacing tool, press out the used
bushing. (Refer to "8. SPECIAL TOOLS" at "G. GENERAL"
section.)
(When installing)
1. Clean a new idle gear bushing and idle gear bore, and apply
engine oil to them.
2. Using an idle gear bushing replacing tool, press in a new bushing
(service parts) to the specified dimension. (See figure.)
(A) When Removing
Camshaft Side Clearance
1. Set a dial indicator with its tip on the camshaft.
2. Measure the side clearance by moving the cam gear to the front
and rear.
3. If the measurement exceeds the allowable limit, replace the
camshaft bearing.
Side clearance of
Allowable limit
camshaft
(1) Cam Gear
Camshaft Alignment
1. Support the camshaft (1) with V block on the surface plate and
set a dial indicator with its tip on the intermediate journal at right
angle.
2. Rotate the camshaft on the V blocks and get the misalignment
(half of the measurement value).
3. If the misalignment exceeds the allowable limit, replace the
camshaft.
Camshaft alignment Allowable limit
(1) Camshaft
1-S59
ENGINE
0.050 to 0.091 mm
0.0020 to 0.0036 in.
0.10 mm
0.0039 in.
34.959 to 34.975 mm
1.3763 to 1.3770 in.
35.025 to 35.050 mm
1.3789 to 1.3799 in.
W1064968
(B) When Installing
W10302410
0.1 mm
0.0039 in.
(A) Side Clearance of Camshaft
W1064307
0.01 mm
0.00039 in.
W1064422
KiSC issued 06, 2008 A