Mitsubishi 4DQ3 User Manual

\0
o
I
Group
~
c.
·f
e
.~
e
'0
;
~
.:.=
a
U
..
""
c::
.~
,l:l
.S
oS
::;;
i.!i
PoO
t!'!-'=
.S
~
::s
.D'"
t!::~
eo
0
,D,D
E
eo
u
Nominal
Item
dimension
Clearance on
crankshaft
journal
(in
two direc-
65 (2.559)
tions
at right
angles
10
each
other with bear-
ing in place)
Thrust clearance
3.7
(0.1457)
Inside diameter
22 (0.87)
Fit on tappets
Fit
on camshaft
No.1
journals
54 (2.126)
No.2
No.3
53 (2.087)
Unit: mm (in.)
Assembly standard
Repair limit
Service limit
Remedy
Remarks
[Standard clearance
I
[Clearance
I
[Clearance
I
[ 0.20 )
Replace bearing if repair
1) Replace crankcase and
(0.0079)
-0.9 (-0.035)
limit is reached.
bearing cap
as an assembly.
Regrind crankshaft
0.Q35-0.100
(at crankshaft
journals and use under-
2)
Upper bearing shells have
[(0.00138~0.00394
)1
journal
aD)
size bearings 0.25
oil groove.
(0.0098), 0.50 (0.0197)
/1--[\
or 0.75 (0.0295)
if
service limit is reached.
0
E9rH
I---
\
'-
[ 0.1-0.189 1
(0.004
~0.00744)
[ 0.30 1
(0.0118)
Replace thrust bearing.
+8.033
tg·
OO13O
)
+0.10
(+0.0039)
+0.10 (0.0039)
0.035
~
0.098
[ 0.12
I
Replace tappet if
[(0.00138
~
0.00386)1
(0.0047)
(at tappet hole
repair limit
is reached.
dia.)
With bushings
Rebore holes and insert
0.040
~0.090
[ 0.15 )
bushings if repair limit
[(0.00157
~0.00354)1
(0.0059)
is reached.
Without bushings
[
0.06
~0.1l
(0.0024
~0.0043)1


Mitsubishi 4DQ3 Specifications

General

Brand	Mitsubishi
Model	4DQ3
Category	Engine
Language	English