wsm Kubota L4100, Workshop Manual

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ENGINE L4100, WSM
1-S43
(EU)
Replacing Valve Guide
(When removing)
1. Press out the used valve guide using a valve guide replacing
tool. (See page "SPECIAL TOOLS" .)
(When installing)
1. Clean a new valve guide and valve guide bore, and apply
engine oil to them.
2. Press in a new valve guide using a valve guide replacing tool.
3. Ream precisely the I.D. of the valve guide to the specified
dimension.
IMPORTANT
• Do not hit the valve guide with a hammer during
replacement.
9Y1210278ENS0064US0
Valve Seating
1. Coat the valve face lightly with prussian blue and put the valve
on its seat to check the contact.
2. If the valve does not seat all the way around the valve seat or
the valve contact is less than 70 %, correct the valve seating as
follows.
3. If the valve contact does not comply with the reference value,
replace the valve or correct the contact of valve seating.
9Y1210272ENS0062US0
Valve guide I.D.
(Intake and exhaust)
Factory specification
8.015 to 8.030 mm
0.3156 to 0.3161 in.
(A) When Removing (B) When Installing
Valve seat width Factory specification
2.12 mm
0.0835 in.
(1) Correct
(2) Incorrect (3) Incorrect
KiSC issued 08, 2012 A