Kubota WSM STV32 Workshop Manual page 125

STV32 · STV36 · STV40, 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 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.
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. 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 Allowable limit
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.
Factory spec.
Cam height of intake
and exhaust
Allowable limit
1-S53
ENGINE
0.025 to 0.066 mm
0.00098 to 0.00260 in.
0.10 mm
0.0039 in.
37.959 to 37.975 mm
1.49445 to 1.49508 in.
38.000 to 38.025 mm
1.49606 to 1.49704 in.
0000005483E
(B) When installing
0000000895E
0.01 mm
0.0004 in.
0000000891E
33.90 mm
1.3346 in.
33.85 mm
1.3327 in.
0000005481E
KiSC issued 04, 2006 A