Sunbeam ALPINE I SERIES: APLINE II SERIES, Руководство по ремонту, Страница: 120 / 413

7th re-Issue
Pagel
CLUTCH UNIT
Description
Alpine Series I and Rapier
Serles
Ill cars
An 8
#
single dry plate A type clutch is fitted incor­
porating a copper impregnated graphite (MY3D)
release bearing which is self-lubricating.
No
attention in the way of lubrication to the release
bearing Is necessary.
Alpine
Series
II, Ill and Rapier Series I/IA cars
An 8
#
single dry plate A.S. (Strap drive) type clutch
Is fitted.
The essential difference between this type of clutch
and the A type clutch lies in the method whereby
torque Is transmitted from the cover to the pressure
plate. Instead of the normal arrangement, where­
In lugs on the pressure plate pass through slots in
the cover, three pairs of spring steel straps, attached
at one end to the cover and at the other,
to the pressure plate, are employed. The straps
are arranged tangentially so that they can
deflect during clutch operation without disturbing
the concentrlclty of the assembly, so ensuring the
maintenance of the Initial accurate balance. This
form of construction also eliminates any friction
between cover and pressure plate, thereby reducing
the operating effort.
Late Alpine Ill, and IV, and
Rapier
IV cars have a
diaphragm
type
clutch.
See
index.
Hydraulic withdrawal mechanism Is employed•
consisting of a master cylinder directly connected
to the pedal (Fig. 2), and a hydraulic fluid pipe
running to the operating cylinder, which in turn Is
attached by a rod to the withdrawal lever.
Provision for bleeding the system is made on the
operating cylinder. (See item 40, Fig. 3.).
Adjustment
Alpine
Serles
I and Rapier
Series
Ill Cars
The only external adjustment Is to the operating
piston rod attached to the clutch withdrawal lever.
Adjustment between pedal and master cylinder is
pre-set and is not provided for in service.
Adjustment, when necessary, should be effected by
slackening the locknut at the back of the fork on
the withdrawal lever outer end, and turning the
WSM.114
Sec. D (Clutch & Prop. Shaft)
PISTON ROD HEXAGON LOCKNUT
Fig. I.
Pedal adjustment, (Adjustable clutches only)
piston rod (Fig. I ). Free movement at the outer
end of the withdrawal lever should be about -1r·
(2·4 mm.).
Alpine Series II, Ill and Rapier Series I/IA
There Is no clearance at the clutch slave cylinder and
the operating piston rod. No adjustment is necessary
or provided for.
The pedal on Alpine Serles 11,111 and IV cars has a two
position adjustment (see inset Fig. 2). The position
can be changed by securing the pedal (46) to the
master cylinder push rod (58), with the clevis pin
(73) in either of the two holes provided In the pedal.
MASTER CYLINDER
Description
(A/pine,
Rapier Ill and I/IA onwards)
This unit (Fig. 4} Incorporates a fluid reservoir and
a master cylinder. Directly In front of the main
rubber cup (8), when the system is at rest, is a
by-pass port (X) which ensures that the system Is
maintained full of fluid at all times, and allows full
compensation for expansion or contraction of the
fluid due to changes of temperature. It also serves
to release additional fluid drawn into the cylinder
from the annular space formed by the reduced
skirt of the piston (10), through the small holes
In the piston, after each application. If this additional
fluid Is not released to the reservoir through the
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