Mitsubishi 4G1 Service Manual page 489

LASH ADJUSTER INSTALLATION
(1) Immerse the lash adjuster in clean diesel fuel.
(2) Using a small wire, move the plunger up and down 4 or 5
times while pushing down lightly on the check ball in order
to bleed out the air.
(3) Insert the lash adjuster to rocker arm, being careful not to
spill the diesel fuel. Then use the special tool to prevent
adjuster from falling while installing it.
ROCKER SHAFT SPRING INSTALLATION
ROCKER ARMS AND ROCKER ARM SHAFT
rocker arms on the inlet valve side do not push the valves.
(2) Fit the rocker shaft spring from the above and position it so
that it is right angles to the plug guide.
NOTE
Install the rocker shaft spring before installing the exhaust
side rocker arms and rocker arm shaft.
(3) Remove the special tool for securing the lash adjuster.
(4) Make sure that the notch in the rocker arm shaft is in the
direction as illustrated.
CAMSHAFT OIL SEAL INSTALLATION