Group 21 Reconditioning
engine
Specifications
Piston
rings
Piston height, type 1 .
type
2.
Clearance in piston
groove
..
Ring gap (see above fig)
Gudg80n
(piston)
pins
Fit, in connecting rod
..
in piston
.....................
.
Diameter,standard
oversize
..
VALVES
Valve
clearance
Inlet and exhaust valves
coldengine
warm
engine
..........
.
Adjusting shims, thickness
Valv8s
mm
(in)
44.5·
Valve
seats
New
U55-7.970
(0.3132-0.3138)
Min 7.935
(0.3124)
1.3-1.9 1.7·2.3
(O.05'0.~·07'0.09)
45
"
-=P3
.
~
~
45
"
~~
Inlet
vllve
Illt
11'.1
Exh.ult
valvl
lelt
4
Measure gap
'
.....
'
\( 15 mm (0.59 in) from
~
"
,=_
<!
915
nvn
Iower
OOge
t
(0.5$
In)
Clearance
\\
...........
mm
(in)
.nYTl
(in)
...
mm
(in)
..
nYTl
(in)
Upper
Lower
Oil
comp.rings comp.rings scraper
rings
1.978- 1.990 1.978- 1.990 4.74
(0.0779- 0.0783) (0.0779-0.0783) (0.1866)
1.728- 1.740 1.978- 1.990
3.978-3.990
(0.0681 - 0.0685) (0.0779-0.0783) (0.1566-0.1571)
0.040- 0.072 0.040
-0.
072 0.030- 0.062
(0.0016- 0.00
28)
(0.0016- 0.0028) (0.0012-0.0024)
0.35-0.65
0.35- 0
.5
5 0.25
-0.6
0
(0.014- 0.026) (
0.014-0
.022) (0.010- 0.024)
light
thumb
pressure
(dose
running
fit)
. . . . . . . .
Thumb
pressure (push fit)
.
mm
(in) 24.00 (0.945)
........
mm
(in) 24.
05
(0.947)
Chec:klng
Adjultlng
0.30-0.40 mm 0.35-0.40
mm
(0.012-0.016 in) (0.014-0.016 in)
0.35-0.45
mm
0.40-0.45
mm
(0.014-0.018 in) (0.016-0.018 in)
3.30-4.50
mm
(0.1300-0.
1n3
in) in increments of
0.05 mm (0.002
In)
44.5·
New
7.945-7.960
New 7.945-7.960
(0.3128-0.3134)
Min 7.925
(0.3120)
New
7.965-7.
(0.3136-0.314
Min
7.945
(0.3128)
'(
(0.3128-0.3134)
f
'
Min
7.925
(0.3120)
35 '
.'
~=:::::==!:6=~::J1I&
(1.38 in) -
bh.u.t
vllvl
A.
E, F-enginei
Exhaust
valvl
Turbo-engines
1 (0.
63
,.~
Turbo:
exh.ust
valvel
are
Stellne.coated
and
must
not
be
machined
to
obtain
new
surface. They can
however
be
ground
-i
n with
paste
against
leat.
Valve
seat
diameter
Inlet
bhlUlt
standard
mm
46.00
38.00
(n)
(1.8124)
(1
.49721
overslza 1
mm
46.25
38.25
(In)
(1.8223)
(1.5071)
2 .
mm
46.50 38.50
(in) (1.8321)
(1.5169)
To Next Page
Loading...
