Geometry - Lotus TURBO ESPRIT Service Manual

Page 4
GENERAL DESCRIPTION
SECTION CC
a
The front suspension i s fully independent with upper and lower wishbones
together with concentric damper/spring assemblies and a n anti-roll bar.
A stub axle, integral with the non-handed vertical link (hub carrier)
carries each front hub on two taper roller bearings, adjustable for endfloat.
CC.
1
-
GEOMETRY
Under normal service conditions, i t should only be necessary to check the front
wheel alignment.
A
f u l l geometry check i s only necessary following front
suspension repair or i f excessive tyre wear i s evident, or steering difficulties
experienced.
The recommended method of measuring front wheel a1 ignment i s by the use of
parallel bars as described i n section DB so that the rear wheel alignment may.
be checked a t the same time.
Before measuring suspension geometry set car to ride height o f 170mm below
chassis front cross member, 170mm bklow rear lowei l i n k chassis brackets.
Camber
O0
30' negative
5
O0
30'
Castor
min
lo 45'
rnax
3O
(Within
O0
30' side to side)
K
.P.I.
23'
nominal
Toe- i n
1 .6mm each side
+
0
-
1 mm
CC.
2
-
CASTOR ADJUSTMENT
Cars prior to V l
N
82/85
D
1937 (Dom)
FF
0602 (U
.
S
.A
.)
may be fitted with
castor adjustment shims 'A' and
'8'
as illustrated
.
These
shims
are available
i n various thicknesses:
Shim Washer 'A' 1 .5mm A082C4091
'I II
'A'
3.0mm A082C4092
'I I 1
'A'
6.Omm A 082 C4093
Shim Plate '8' 1 .5mm A082C4090
1 '
'I 'B'
3.0mm A082C4089
Shins may be fitted up t0.a max;mum thickness of 6.0mm to correct castor
i f
necessary.
Important The same thickness shim pack must be used a t location
'A'
and
'B'.
As
a r o i h guide, fitment of
3.0rnm shim
a t
'A'
and
'B'
wit1 result i n a n increase
- -
1 0 .
'
i n castor of approx
.
2
,.
Can from and including
Vl N
82/85 D 1937 ( ~ b m ) FF0602 (USA) have a shortened
chassis fixing tube for the top wishbone pivot stud, and 6rnm o f shim washers
'A'
distributed between the front and rear of the-chassis a t
this
poifit
.
I n extreme
cases, these cars may be fitted w i t h additional shims
'A'
and
'B'
as detailed above.