SERVO UNIT
The servo unit consists of a vauium cylinder which is ac-
mated
by the brake
pedal.
The cylinder
is connected to
the engine inlet manifold by means of a hose. The func-
tion of the system (an
be seen from the description be
low.
NOTE
The vacuum servo shall not be disassembled.
I
Initial position
When "off", the return spring holds the valve piston and
the push-rod
in the right hand end position
in the guide
housing. In this position, the atmospheric air channel is
kept dosed and the vacuum channel open.
The vacuum is equal on both sides of the diaphragm.
Brake position
pedal, the valve piston is moved
I
is closed and
air
of atmo-
e
right
hand
side
of
the
When pressing the brake
to
the
left,
the
vacuum
channe
spheric pressure flowes in on th
brane.
.
xlwum prevails on the L.H. side of the diaphragm and
atmospheric pressure on the R.H. side an increased farce
is obtained
on the cylinder.
The
brake action
can
be
in-
creased further by larger pressure on the pedal. Once the
pedal pressure ceases, the return spring forces the valve
piston back. The vacuum channel opens, and the atmo-
spheric air channel closes. The vacuum servo returns to
its "off"
position.
.
Should a fault occur in the power brake unit, the brake
system of the mr will function without servo effect. The
servo
cylinder
will
in
that
case
serve
only
as
a
lengthened
push-rod. In the latter case is, of course, a larger pedal
pressure required.
SERVO
UNIT,
INITIAL POSITION
SERVO UNIT, BRAKE POSITION
Febr
1977
Содержание 95 1967
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Страница 281: ...WIRING DIAGRAM SAAB 95 R H D MODEL 1967 371 3 March 1979...
Страница 283: ...WIRING DIAGRAM SAAB 95 L H D MODEL 1967 371 5 March 1979...
Страница 285: ...1 2 s 1 E s cilia 23 21 is x n __ web 13 _ 69 w 1967 WIRING DIAGRAM SAAB 95 USA MODEL 371 7 March 1979...
Страница 287: ...38 L 1 E l s 67 WIRING DIAGRAM SAAB 96 R H D MODEL 19 371 9 March 1979...
Страница 289: ...35 wit 5 I 35 I IIIII no eel E still we is WIRING DIAGRAM SAAB 96 L H D MODEL 1967 March 1 979 371 1 1...
Страница 291: ...March 1979 S WIRING DIAGRAM SAAB 96 USA MODEL 1967 371 13...
Страница 293: ...DEL 1967 RING DIAGRAM MONTE CARLO R H D MO WI 371 15 March 1979...
Страница 295: ...ODEL 1967 CARLO L H D M RAM MONTE WIRING DIAG 371 1 7 March 1979...
Страница 297: ...March 1979 Ili EEE late 67 ING DIAGRAM MONTE CARLO USA MODEL 19 WlR S 1392 371 19...
Страница 299: ...March 1979 m BE EFTIII l i 18C 68 WIRING DIAGRAM SAAB 95 R H D MODEL 19 371 21...
Страница 305: ...o 7 371 27 March 1979...
Страница 307: ...March 1979 uni I176 EWEEEEE 68 WIRING DIAGRAM SAAB 96 L H D MODEL 19 371 29...
Страница 309: ...March 1979 V R n i m 9 O n m H II l u I Y _ Ill Ill 5 EEE ere E WIRING DIAGRAM SAAB 96 USA MODEL 1968 S 1552 371 31...
Страница 311: ...March 1979 sessil WIRING DIAGRAM MONTE CARLO L H D MODEL 1968 371 3...
Страница 313: ...l iiiiiii WIRING DIAGRAM DE LUXE USA MODEL 1963 371 35 March 1979...
Страница 317: ...iriii iill 0 MODEL 1969 WIRING DIAGRAM SAAB 95 L H 371 39 March 1979 an...
Страница 321: ...5 b canm___J 42 m r ll 0 s IMO when QEEBEEBE Em WIRING DIAGRAM SAAB 96 R H D MODEL 1969 March 1979 37143...
Страница 323: ...March 1979 E 42 E iflg gi ii it may iijiiiiiEJ gfea EM ill r m E W 69 WIRING DIAGRAM SAAB 96 L H D MODEL 9 371 45...
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Страница 337: ...March 1979 MODEL 1970 DIAGRAM SAAB 96 L H D WIRING m iijiiii W _ 371 59...
Страница 339: ...I rmi l llil e e March 1979 371 61...
Страница 341: ...gmagaa aaei Jiii D MODEL 1971 WIRING DIAGRAM SAAB 95 R H 371 6 March 1979 m...
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Страница 347: ...March 1979 551 _ Ill MEEF ESP E EH iiii i l L WIRING DIAGRAM SAAB 96 R H D MODEL 1971 reiterate 9 371 39...
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Страница 357: ...Ell um am iL 1 EL I L RING DIAGRAM SAAB 96 USA MODEL 1972 1973 WI March 1979 371 79...
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Страница 371: ...S 5769 1 911 V E m JH WIRING DIAGRAM SAAB 96 L H D MODEL 1977 8 March 1979 371 93...
Страница 373: ...WIRING DIAGRAM SAAB 96 L H D MODELS 1978 AND 1979 371 95 March 1979...
Страница 376: ...TRANSMISSION 400 2 SAAB Enh 1 11...
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