Kubota WSM 07-E3B Series Workshop Manual page 188

07-E3B SERIES, WSM
Clearance between Valve Stem and Valve Guide
1. Remove carbon from the valve guide section.
2. Measure the valve stem O.D. with an outside micrometer.
3. Measure the valve guide I.D. of the cylinder head at the most
wear part as shown in the figure below with a small hole gauge.
And calculate the clearance.
4. If the clearance exceeds the allowable limit, replace the valves.
If it still exceeds the allowable limit, replace the valve guide.
V2607-DI-E3B
V2607-DI-T-E3B
Clearance
between valve
stem and guide
(Intake)
V3007-DI-T-E3B
V3307-DI-T-E3B
V2607-DI-E3B
V2607-DI-T-E3B
Clearance
between valve
stem and guide
(Exhaust)
V3007-DI-T-E3B
V3307-DI-T-E3B
V2607-DI-E3B
V2607-DI-T-E3B
Valve stem O.D.
(Intake)
V3007-DI-T-E3B
V3307-DI-T-E3B
V2607-DI-E3B
V2607-DI-T-E3B
Valve stem O.D.
(Exhaust)
V3007-DI-T-E3B
V3307-DI-T-E3B
V2607-DI-E3B
Valve guide I.D.
V2607-DI-T-E3B
(Intake and
V3007-DI-T-E3B
exhaust)
V3307-DI-T-E3B
Replacing Valve Guide
(When removing)
1. Using a valve guide replacing tool, press out the used valve
guide. (Refer to "5. SPECIAL TOOLS" at "GENERAL" section.)
(When installing)
1. Clean a new valve guide, and apply engine oil to it.
2. Using a valve guide replacing tool, press in a new valve guide
until it is flush with the cylinder head as shown in the figure.
3. Ream precisely the I.D. of the valve guide to the specified
dimension.
V2607-DI-E3B
Valve guide I.D.
V2607-DI-T-E3B
(Intake and
V3007-DI-T-E3B
exhaust)
V3307-DI-T-E3B
IMPORTANT

• Do not hit the valve guide with a hammer, etc. during
replacement.
(A) When Removing
S-85
ENGINE
Factory 0.030 to 0.057 mm
spec. 0.0012 to 0.0022 in.
Allowable 0.10 mm
limit 0.0039 in.
Factory 0.055 to 0.085 mm
spec. 0.0022 to 0.0033 in.
Allowable 0.10 mm
limit 0.0039 in.
Factory 0.045 to 0.072 mm
spec. 0.0018 to 0.0028 in.
Allowable 0.10 mm
limit 0.0039 in.
Factory 0.055 to 0.085 mm
spec. 0.0022 to 0.0033 in.
Allowable 0.10 mm
limit 0.0039 in.
Factory 5.968 to 5.980 mm
spec. 0.2350 to 0.2354 in.
Factory 6.960 to 6.975 mm
spec. 0.2741 to 0.2746 in.
Factory 5.953 to 5.965 mm
spec. 0.2344 to 0.2348 in.
Factory 6.960 to 6.975 mm
spec. 0.2741 to 0.2746 in.
Factory 6.010 to 6.025 mm
spec. 0.2367 to 0.2372 in.
Factory 7.030 to 7.045 mm
spec. 0.2768 to 0.2773 in.
W1061883
Factory 6.010 to 6.025 mm
spec. 0.2367 to 0.2372 in.
Factory 7.030 to 7.045 mm
spec. 0.2768 to 0.2773 in.
(B) When Installing
W1062212
KiSC issued 06, 2020 A