Mitsubishi Motors 6A1 - Manual (Page 41)

6A1 ENGINE (E - W) - Rocker Arm and Camshaft <SOHC>
11A-9-4
LASH ADJUSTER LEAK DOWN TEST
Caution
D
The lash adjuster is a precision part. Keep it free
from dust and other foreign matters.
D
Do not disassemble lash adjuster.
D
When cleaning lash adjuster, use clean diesel fuel
only.
(1) Immerse the lash adjuster in clean diesel fuel.
(2) While lightly pushing down inner steel ball using the special
tool (Air bleed wire MD998442), move the plunger up
and down four or five times to bleed air.
Use of the special tool (Retainer MD998441) helps
facilitate the air bleeding of the rocker arm mounted type
lash adjuster.
(3) Remove the special tool (Air bleed wire MD998442) 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
D
Upon completion of air bleeding, hold lash
adjuster upright to prevent inside diesel fuel from
spilling.
(4) After air bleeding, set lash adjuster on the special tool
(Leak down tester MD998440).
(5) After plunger has gone down somewhat [0.2 - 0.5 mm],
measure time taken for it to go down 1 mm. Replace
if measured time is out of specification.
Standard value: 4 - 20 seconds/1 mm
(Diesel fuel at 15 - 20
°
C)
PWEE9622
E
Feb. 1997 Mitsubishi Motors Corporation
6EN0186
MD998442
Diesel fuel
MD998441
6EN0187
Graduations = 1 mm
MD998440
Lash adjuster