Doosan DE12T - Valve Guide; Valve Head Thickness; Valve Stem End Play

•
Valve head thickness
Measure the valve head thickness, and
replace the valve if the measured value
is beyond the limit.
2) Valve guide
•
Install the valve into the valve guide and
measure the clearance between them
by valve movement. If the clearance is
excessive, measure the valve and
replace either the valve or the valve
guide, whichever worn more.
Valve stem end play
•
Install the valve into the cylinder head
valve guide, then check and see if it is
centered with the valve seat using a spe-
cial tool.
- 75 -
EFM2037I
Measuring
position
EA0M4052
Dimension
Description
Standard Limit
I ntake valve 1.5 mm 1 mm or less
Exhaust valve 1.5 mm 0.9 mm or less
Standard Limit
I ntake valve 0.04 ~ 0.07 mm 0.2 mm
Exhaust valve 0.06 ~ 0.09 mm 0.25 mm