Sunbeam ALPINE I SERIES: APLINE II SERIES, Workshop Manual

Page: 166 / 413

4th re-issue
Page 2
WSM.124
Section F (Front Suspension)
FRONT SUSPENSION
SCREW
THREADS OF THE. UNIFIED SERIES
ARE
USED ON THIS UNIT
GENERAL DESCRIPTION
Serles I to IIIA Models
The front suspension Is of the coil spring and un­
equal length wishbone type, employing long inner
fulcrum pins threaded at each end to carry the
bushes of the upper and lower links. Provision for
camber adjustment Is made by the insertion of
shims between the upper fulcrum pin and its
bracket location on the crossmember (Fig. I, Inset,
and Fig. 13, Inset).
The stub axle Is located, by means of a ball socket
assembly, directly Into the outer end of the upper
link and by means of a short swivel pin into the
trunnion. A short threaded eyebelt completes
the connection between trunnion and lower link.
Thrust is taken via a nut and thrust washer to
the lower face of the stub axle swivel.
This design obviates the necessity for a separate
stub axle carrier, thus affording a saving in unsprung
weight. A sectional view of the near side of the
front suspension is shown in fig. I.
On Alpine Series II and Ill Models onwards the top
swivel bearing assembly is self-lubricated and re­
quires no attention. No grease nipple is fitted.
In the following paragraphs detailed instructions
are given for checking and correcting such Items
as track (toe-In) and wheel camber and for checking
the castor and steering axis inclination angles. To
avoid Inaccuracies In steering geometry, and con­
sequent excessive tyre wear, It Is most Important
that these procedures are observed.
ALPINE
A
5·48 # 13·9 cm.
B 2· tr S•-4 cm.
C
3.43 w 8·7 cm.
RAPIER
A 6· 10" 15·5 cm.
B
2·75 "' 7 cm.
C 2·80' 7• I cm.
A-STATIC
LADEN
C-REBOUND
i
Fl1. I. Sectional view of
front
suspension on near side