Camshaft Driving Belt; Lower Section - Lotus TURBO ESPRIT Service Manual

-. .
SECTION EA
Page 1 7.
4.
Remove bolt on inlet camshaft cover, securing the belt guard bracket to the
engine, and remove upper section.
Lower Section
1
.
Remove the air duct from between the engine and the radiator (see Section
'K')
.
2. Remove the top section of the guard.
3, Remove the alternator drive belt and
i f
fitted, the air conditioning
compressor pump be1 t, and power-assisted steering pump drive be1 t
.
4,
Release the bolt securing the guard bracket to the thermostat housing,
5 ,
Remove the nyloc nuts and plain washers from both sides at the bottom of the
guard, taking care NOT to misplace the distance pieces (one on eachstud).
To Replace
1 , Replacement of both upper and lower sections of the belt guard is
a
reversal of
the removal instructions, NOT forgetting the distance pieces i n their correct
locations.
EA .8,
-
CAMSHAFT
DRlVl NG
BELT
(TOOTHED
BELT)
Prior to
'86 M.Y.
all engines use a trapeziodal (nearly squarej tooth profile
belt with originally, a mannually adjusted eccentric belt tensioner, and later
a semi-automatic spring loaded tensioner. 1986
M.Y.
Excel and U.S.A. Turbo
H.C.
I.
models and other engines at a later date use an H.T.D. (~igh Torque
rive)
cam belt and ulley set, having a rounded tooth profile. A manually adjusted
eccentric be1
t
tensioner is generally used with the H.T.D. belt, and no snubbers
are necessary
A
Do
-
NCYT
attempt to tension a hot engine. Only carry out,this adjustment at an
engine (ambient) temperature of between 1 5 '
-
25'~.
Use cantilevered Burroughs Gauge TOOOG0025J between the auxiliary and inlet
camshaft.pulleys in the following manner, removing the belt guard
upper section and such ancillary equipnent as may be necessary to gain access.
Fully extend the hoak by pushing the handle completely down before inserting
the belt between the noae piece and hook, ,ensuring that'the
hmk
i s between
the belt teeth. Release the handle with a rapid ackon.
A
slow release w i l l
result i n a
HIGH
reading owing t o the small amount of internal friction
present stopping the
hook
f r m fully returning.
Note the indicator dial
readi*
; i s
. .
.-.
Repeat action several times to 'get the feel
'.