70019401960 Specifications
Section
2 024, 024 T, 024 TIC Engine
Pistons rings
~~ ~L---,-C--., -L-J
• ""~,
129521
Side cleara n ce
P iston rings R in g gap
Side clearanc e
(measured with ring
Uppe r comp ress ion
mm in Lo
wer comp ress io n O il sc rape r
mm in
mm
in
on piston) new ........ .
max
....... .
0.11-0 .14
0 .2 0
.0043 -0.0055 0.07-0.10
0.008 0.2 0.0028-0
.0039 0.03-0.0 7
0.008 0.
15
0.0012-0 .0028
0 .006
Ring gap (measured
in cylinder, see
illustration) new. . . . . . . . 0 .3-0.5
max........ 1.0 0.012
-0.020
0 .040 0.3-0.5
1.0 0.012
-0.020
0.040 0.25-0
.50
1.0 0
.010-0.0197
0.040
Gudgeon (piston ) pins
Fit, in connecting rod ........................................ .
Ligh t thumb pressure (close running fit)
T humb pressure (push
fit) in piston .............................. ............. ..... .
Valv e system
Valve clea ra nces
128157
Cold engine = engine at room temperature
= intake valves
A = exhaust valves
Check/adjust valves in this order : 1-5 -3 -6-2- 4
Va lv e cleara n ces
C heck ing
Settin g
m m in
mm
Intake valve, warm engine ..... ............................... . 0 .20-0.30 0.008 -0.012
0.25
cold
engine ................ ..................... . 0.15-0 .25 0.006-0 .010 0.2 0
E xhaust valve, warm engine ............. ..................... . 0.40-0 .50 0.016-0.020 0.45
cold
engine ................ . " ................. . 0 .35-0.45 0.014-0.018
0.40
Shims, thickness . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 3.00 to 4.25 at intervals of 0.05 mm
(0.012 to 0.16 7 at intervals of 0.002 in)
Valves (dimensions in mm)
7,97
~r-i4--Min. 0 ,5
Int ake va lv e
130061
44 ,5 °
7,95
Exh au st valve
in
0 .010
0 .008
0 .018
0.016
129836
Note : Exhaust valves are stellite plated. Only the valve face may be ground.
110
(
70019401960 Specifications
Section
6 Suspension and steering
Section 6 Front end and steering
Group 60 Wheel alignment
(Empty vehicle)
Front wheel alignment
Caster ..................................................... 4.5-5.5°
Cambe r*
... ................................... ........ ..... -0.2 -+0.8 °
• Difference between left and right-hand locks must not exceed o.r.
Toe-in
All variant s*
Angle (2 (X) A-a 8-b C-c
18'±8' 3.2±1
.3 mm 2.3±1.2 mm 2 .1 ±0.9 mm
0 .12±0.05 in 0.0 .9±0.05 in 0.08±0.04 in .-
• In order to simplify workshop routines, the same values apply to all 740/940/960 models from 1982. Older values may still be
found in some manuals and are not incorrect, though now supplanted by these newer values.
All measurements to be carried out on an empty vehicle. Dimensions are noted at hub height in the form of an angular
measurement a or as the difference in mm between the front and rear edges of the wheels at points A, B or C (the tire tread,
shoulder and wheel rim edge respective ly).
Ball joints
Max axial play with normally loaded front end, 3 mm
(0.12 in)
Max radial play, 0.5 mm (0.02 in).
Wheel alignment, rear wheels
(
Multi -link )
Negative Camber IfJl
'legall. umb .. 113' -1.0
;l
+
a +a ~ -0.
r;-~ -0.6
P--I I
ii I-i . IT -'. ! . -.1-Un k arm angle (n)
-0
-0
.
Un k a~ angle (a)
-4 -'.-3 "';-2 1 +i +2 + +4 1-
-~~ u ~ 1"'--H---. 1-i-J:-L
_. f-L -\-;-_1_ i-'-1.L?.4 h-
"Lllft~~~~
L.l. f:l+ ~:; +fJ~ .
: I : . : . ill I I I I I m t I " " "! i _ J . ,. . I Positive Camber I~) H 1-1 I I II II ~ t ,I. L LLLu....L1 143 720
Camber
Diagram shows correct Camber (fj) in relation to position of
lower links (a).
Examp le: angle of lower link is +2°, correct Camber is
0 .05 ° (negative Camber). Tolerance = ±0.25°.
143721
155
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