Replacing Valve Guide - Kubota WSM 05-E4B Series Workshop Manual

SERVICING
6. Servicing
2. Measure the valve stem O.D. with an outside
micrometer.
Service specifica-
Valve stem O.D.
tion
3. Measure the valve guide I.D. with an inside
micrometer.
Service specifica-
Valve guide I.D.
tion
4. Calculate the clearance.
NOTE
• If the clearance is more than the service
limit, replace the valves.
• If the clearance stays more than the service
limit, replace the valve guide also.
Service specifica-
Clearance be-
tion
tween valve stem
and valve guide
Service limit
RELATED PAGE
6.7 Replacing valve guide on page 4-53
05-E4B SERIES,05-E4BG SERIES
6.960 to 6.975 mm
0.2741 to 0.2746 in.
7.010 to 7.025 mm
0.2760 to 0.2765 in.
0.035 to 0.065 mm
0.0014 to 0.0025 in.
0.10 mm
0.0039 in.

6.7 Replacing valve guide

IMPORTANT
• Do not hit the valve guide with a hammer during
replacement.
Tools required
• Press tool
• Valve guide replacing tool
Removing valve guide
1. Press out the used valve guide with the valve guide
replacing tool.
(A) Removing direction
Installing valve guide
1. Clean the new valve guide and valve guide bore,
and apply engine oil to them.
2. Press fit the new valve guide with the valve guide
replacing tool.
(B) Installing direction
3. Ream accurately the I.D. of the valve guide to the
specified dimension.
Service specifica-
Valve guide I.D.
tion
4. ENGINE
7.010 to 6.025 mm
0.2760 to 0.2765 in.
4-53
KiSC issued 03, 2023 A