Kubota D1503-M-DI Workshop Manual page 84

03-M-DI Series, WSM
Replacing Valve Guide
(A) (When removing)
1. Press out the used valve guide using a valve guide replacing tool.
(B) (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.
Valve guide I.D.
Factory spec.
(Intake and exhaust)
IMPORTANT
• Do not hit the valve guide with a hammer during
replacement.
(A) When Removing
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.
(1) Correct
(2) Incorrect
S-63
DIESEL ENGINE
8.015 to 8.030 mm
0.31555 to 0.31614 in.
(B) When Installing
W1027889
(3) Incorrect
W1028219
KiSC issued 10, 2009 A