Mitsubishi 4DQ50 Service Manual page 96

Section Units Parts
~
Oheckq, Items Naminal Setting
Standards
L~it
,of
pur
Olearance
til
66 Injection starting
,,~
±5kg/cm t
11Ok&/cm
2
41
pressure
-
01
COl
Spray angle
.2
8
..
67 ' 40
0
~
(main injection)
'2
68
I
Oi I-tightness of needle
Seats must not leak UIJier ~~~
....
_IVA "' .. ".'"
Pistc~:nd
69
~r ~ ~ter
diams.
a st a c earance
22IP
+O.001-+Q.021
P~o{eod ani
70
~er ~::rt~
diams.
sta c earance
SIP -0.005-0.015
Tappet
a~le
71
i
~f
=
o~tel diams.
s t a r c earance
20IP +O.018-H).056
~rR~rcUir
72 Innrr
~o~ter
diams·
a 5t r c earance
7IP f+o.013
-i{).
071
Roller
73 'fflfer ~~ef, diams.
a sta c earance
7IP f+o.033 -+0. CB5
Roller pin
74
Outer diam.
1SIP 0--0.027
No ilir leak in any
75
ilit-tightness test
ass y. Leak from
between re:,h rod and
hous i~c~' than
c In.
Less than 25 not more
Priming punp 76
Suction capacity
than 30
strokes strokes
Shorter than nOt more
Pump body
77
Suction capacity
45 sec.
than
E
50 sec.
41
..
ell
»
78
Delivery pressure
.8~.2.kg/
Ditto left til
~
cmz
-
~
Q.
79
Del ivery rate
More~n
~OOc:c/lTlin.
"' "
S
900c in.
.-
Oam shaft
80
Longi tyd ina I Aiam.
32
0--0.1
..
of Drofde
(,),
41
Bearings 81
'2
Oam shaft play Axial
0.03-0.05 O. 1
....
Pump body
82 Tappet hole in~r diam.
24IP
!+O.
02
-+0.
062
tappet outre dlam.
and
standard clearance
83 'Pin hole inner diam ••
7IP
f+O.0 1 3-+o.050
pin outer diam.
aild standard clearance
floating bush
lI:Jner
~lam
••
7IP
1+0
.033-+0 . 78
84
BIn
OIl
Mi l
lam. a
st~ar
Tappets
1 -
Floating
c earance
Itrller inner
bushes and lam.,
85
rollers
floatiM bush
1 1 IP
+0.050-+0.097
m
er
= .
. ' st ard
c earance
I--
86
Roller outer
diam. 17IP
0--0.027
- 88-