Page 46
9.
Place the abutment plate (17) in position
Inside the vacuum shell (18) and secure, using
two locking plates (16) and four bolts (15).
The four bolts should be tightened to a torque
reading of 150-170 lb. in. (175-195 kg. cm.).
10.
To build up the booster diaphragm assembly
proceed as follows:-
(a)
Hold the hexagon of the push rod ( 13) in
a vice with the push rod facing down-
wards.
(b)
Slide the large plate (12) over the threaded
spigot with the lip side facing downwards.
(c)
Similarly, slide the rubber diaphragm (9)
over the push rod with the hollow side
facing the large plate (12).
(d)
Slide the small plate (8) over the spigot,
lip side upwards, and secure by fitting the
nut (7).
(e)
Lock the nut by punching the thread in
two separate places.
<n
Flt the rubber buffer (6).
11.
Engage the small end of the return spring (14)
under the locking plate tabs (16).
12.
Engage the booster diaphragm assembly on
the large end of the return spring and enter
the end of the push rod (13) into the slave
cylinder bore by compressing the spring.
Whilst holding the assembly in this position,
fit the end cover (5) and secure, using the
clamping ring (2), bolt, nut and washer.
Do
not fully tighten the nut and bolt at this stage.
·13.
Flt the seal ( I 0) on to the valve piston ( 11)
with the lip facing away from the piston, and
insert the piston, seal end first, Into the bore
in the Inclined face of the slave cylinder.
14.
Place the gasket (25) In position on the Inclined
face of the slave cylinder, followed by the
valve housing (24), and secure by fitting the
four screws.
WSM. 124
Section K (Brakes)
15. Place the control valve diaphragm assembly
(23) on the valve housing (24), with the narrow
stem Inserted Into the piston (11) and the
screw holes In the periphery of the diaphragm
in line with the holes in the flange of the valve
housing.
16. Fit the air valve cover assembly (19) complete
with rubber elbow (I) and secure, using five
screws (22).
17. Reposition the end cover (5) so that the
connecting pipe is In line with the rubber
elbow (I) then fully tighten the nut and bolt
securing the clamping ring
(2).
18. Flt the rubber elbow over the connecting
pipe.
19. Refit the servo unit to the car as previously
described, and test for correct operation.
Vacuum non-return valve
The vacuum non-return valve is fitted to the
engine's Induction manifold.
Its purpose Is to preserve vacuum In the servo and
to prevent damage to the servo unit in the event
of backfire. It consists of a spring-loaded valve
which, under normal conditions, will be open due
to suction from the manifold. Should the suction
from the manifold become Insufficient to preserve
the vacuum In the servo unit, the valve will close
on its seat due to the action of the spring.
Since it is not possible to service the non-return
valve, in the event of trouble It should be ren�wed.
To remove, pump the footbrake several times to
destroy any vacuum in the servo and vacuum hose
pipe, then remove pipe from the non-return valve.
Unscrew non-return valve from engine manifold.
When refitting use a new copper washer between
the non-return valve and manifold.
Summary of Contents for ALPINE I SERIES: APLINE II SERIES
Page 1: ......
Page 189: ...Fis 21 Ball pin heirht checkinr fixture in position Details of items 1 to 4 In Fig 22...
Page 208: ...Fla 3 Exploded view of rear axle Hypoid Bevel Drive...
Page 220: ...Page 16 WSM 12 f Section G Rear Axle 0 QQ I I I I I t 0 ii 8 ts t 0 Cl 2 i J...
Page 247: ...Page6 WSM 124 Section J Steering N Iii it...
Page 299: ...Page 40 3 6 7 8 Fis 22 Se rvo unit exploded view Sect WSM 124 ion K Brakes 18 419 GZo 21...
Page 413: ..._ PRINTED IN ENGLAND 9Y WREN PRINTING CQ LTD LONDON...