Mitsubishi 4G1 Service Manual page 364

Division = 1 mm (.04
I
Lash adjust&
(2) While lightly pushing down the inner steel ball using the
small wire, move the plunger up and down four or five
times to bleed air.
Use of the Retainer facilitates the air bleeding of the rocker
arm mounted type lash adjuster.
(3) Remove the small wire and press the plunger. If the plunger
is hard to be pushed in, the lash adjuster is normal. If the
plunger can be pushed in all the way readily, bleed the lash
adjuster again and test again. If the plunger is still loose,
replace the lash adjuster.
Caution
Upon completion of air bleeding, hold the lash adjuster
upright to prevents the inside diesel fuel from spilling.
(4) After air bleeding, set the lash adjuster on the special tool
(Leak down tester MD998440).
(5) After the plunger has gone down somewhat 0.2 - 0.5 mm
mm (.04 in.). Replace if the measured time is out of
specification.
Standard value: 4 - 20 seconds / 1 mm (.04 in.)
[Diesel fuel at 15 - 20°C (50 - 68"F)]
INSTALLATION SERVICE POINTS
LASH ADJUSTER INSTALLATION
(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 the
adjuster from falling while installing it.
TSB Revision