Mitsubishi 3000GT Service Manual page 83

ENGINE
NOTE
(1) If the leak-down test is performed, the lash adjust-
er can be judged accurately to be defective or
not.
(2) For the leak-down test procedure or the procedure
for removing air from the lash adjuster, refer to
the Engine Service Manual.
In addition, if the rocker arm is felt very stiff or cannot
be pushed down when it is pushed, the lash adjuster
is in the normal condition. Therefore, check for other
cause of noise.
(4) Lash Adjuster Replacement Procedure
Caution
In the cylinder from which the lash adjuster is re-
moved, the piston interferes with the valve when the
valve is pushed down. Therefore, turn the crankshaft
to keep the piston position down.
In addition, the rocker arm located at the valve lifted
by the cam cannot be removed. Therefore, turn the
crankshaft to keep the cam from lifting the valve before
removal of the rocker arm.
1. Using the special tool, press the valve down and
remove the roller rocker arm.
2. Pull out the lash adjuster from the cylinder head.
3. Install a new lash adjuster having air removed to
the cylinder head.
4. With the valve pressed down by the special tool,
install the roller rocker arm.
NOTE
When the roller rocker arm is installed, place the pivot
side of the rocker arm on the lash adjuster. Then, 'push
down the valve and place the slipper side of the rocker
arm on the valve stem end.
LASH ADJUSTER REPLACEMENT
Refer to LASH ADJUSTER CHECK.
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