Doosan D1146, Установка, эксплуатация и обслуживание

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(5) Assembling cylinder head
•
Clean the cylinder head thoroughly.
•
Replace the valve stem seal with new
one, and by means of a special tool,
press the stem seal into the valve guide
of cylinder head.
•
Coat engine oil to valve stem and valve
g u i d e a n d a s s e m b l e t h e v a l v e .
However, be careful for the damage of
valve stem seal.
•
Install the lower seat of valve spring to
the valve guide of cylinder head.
•
After putting inner, outer springs, install
the spring upper seat on it.
•
Assemble the valve by inserting the
valve cotter pressing the valve spring
with a special tool.
•
After installing the valve, check whether
the valve is correctly installed or not tap-
ping it lightly with urethane hammer.
9.2.3. Rocker arm assembly
1) Disassembly
(1) Disassemble the snap rings that are
located at both ends of rocker arm
shaft by a plier.
(2) Disassemble in the order of washer,
rocker arm bracket, rocker arm spring,
rocker arm.
2) Inspection of rocker arm assembly
(1) Rocker arm shaft
•
Rocker arm shaft run-out
Place the rocker arm shaft on two V
blocks and inspect the shaft for bend
using a dial gauge.
If the amount of this run-out is small,
press the shaft with a bench press to
correct the run-out Replace the shaft if
the measured value exceeds the limit.
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EA9M3022
EA8M3008
EDM2037I
Limit 0.2 mm