Mitsubishi S4S

MAINTENANCE STANDARDS
Unit: mm [in.]
Nominal Assembly Standard
Repair
Service
Group Inspeetion Point
Limit Limit
Remark
Value (Standard Clearance)
(Clearance) (Clearance)
~
14.000 to 14.018 14.100
...
Inside diameter
0
..0
[0.5512 to 0.5519]
[0.5551]
Q)
0..
Clearance between
(0.016 to 0.052) (0.08)
If it exceeds the repair
0..
~
tappet and bore
([0.0006 to 0.0021)) ([0.0031))
limit, replace tappets.
~
Front (0.070 to 0.118)
'"
and
([0.0028 to 0.0047))
<Il
If it exceeds the repair
~
~
midd1e
(without bushings)
(0.15) limit, refinish bores
§
5
...
..0
Clearance
(0.070 to 0.110) ([0.0059)) and install bushings,
U
~
between
<Il
Rear ([0.0028 to 0.0043)) or replace camshaft.
..0
camshaft
co
(without bushings)
a
journa1 and
<Il
U
(0.040 to 0.119)
If it exceeds the repair
bore
(0.15)
([0.0016 to 0.0047))
([0.0059))
limit, rep1acebushings.
(with bushings)
Ream if necessary.
'0
Warpage of gasket 0.05 [0.0020]
0.20
Regrind if warpage is
<Il
<)
..c
contact surface
or less
[0.0079]
minor.
...
<)
'0
Compressed thickness
1.2
±0.05
.5
>-,
of gasket [0.05]
[±0.002]
U
Diameter
Inlet
7.940 to 7.955 7.900
va1ve
8 [0.3126 to 0.3132]
[0.3110]
~
ofva1ve
'0
Exhaust
[0.31]
7.920 to 7.940 7.850
'5 stern
co
va1ve
[0.3118 to 0.3126] [0.3091]
~
;>
(;J
Clearance
Inlet (0.065 to 0.095) (0.150)
;>
'0
between
valve
([0.0026 to 0.0037))
([0.0059])
=
<Il
guide and
Exhaust
(0.080 to 0.115)
(0.200)
~
;>
stern
va1ve
~
([0.0032 to 0.0045))
([0.0079))
Height to top
of 11.5
±0.1 [±0.004]
va1veguide
[0.45]
'0
Ang1e
30°
<Il
~
..0
Inlet 0.4
...
~
~
Valve
va1ve [0.016]
1.0
'0
±0.1 [±0.004]
.:::
sinkage [0.039]
è
;;,
ê<I
Exhaust
0.5
':l
U
~
va1ve
'"
[0.020]
~
;>
1.8
~
Width
IA
±0.14 [±0.0055]
Valve
[0.055] [0.071]
margin
Valve seat
Va~e
Up to 1.83
angle
sin age
Valve margin
2.13 [0.0839]
[o.onO] by
refacing
Free length
48.85 47.60
[1.92] [1.87]
eo
Squareness of ends
=
Squareness 1.5
0
or less with respect to center
.t::
0..
line
'"
~
;>
Set length 43 [1.69]
~
Set force
176 to 196
147
N (kgf) [lbf]
(18 to 20)
(15)
[40 to 44]
[33]
2-3