Mitsubishi 4DQ50 - Page 99

Limit of Use Remedies
Remarks
not below 150kg/c:n
z
Re~lace plunger ass'y
Use good
de
I ivery valve. Put a
pressure gauge of 300-400k~
em
z
,
set uck at small injection
+0.15
rate and.
running pump at 200
r. p.m.,
read the gauge.
A
0.1
reading above 1S0k~CDlZ is
satisfactory.
-0.5
0.25
•
Use good plunger. Set pressure
not Jess than 5 sec.
Replace delivery valve
ass Y
at1S0k~anzand bring control
rack to non-injection position
(Com) to see how soon it will
drop 10k~em~ If it takes
-1
longer than 5 sec •• oil-tight-
ness
is satisfactory.
Tappet clearance:more than 3.
Conditions) Nozzle tips: ND-DN40SDND32
Making
it
inject
into open air
on injection pamp tester.
Injection
pipes: ~1.6~600
Injection pressure: 120 k~cmz
De I ivery pressure: 2.0 k~anz
Test oil: JIS No.2 gas oil
Running injection
600 r.p.m.
pump at
Main spring
-'( .... -)"'~
....-'
.lillllllll P )
~~ -
Shim(B) '/1
Shim(A)
- 91-