Driving Belt Tensioner - Lotus TURBO ESPRIT Service Manual

Page 22
SECTION €A
also applies to engines where the air pump is driven from the back of
the toothed belt.
Do not under any circumstances attempt to remove locking pin from the
tensioner assembly, other than when unit i s installed on an engine with
timing be1 t i n position.
5 .
Remove toothed be1 t from sprockets.
NOTE: Do NOT turn the camshafts with No.1 piston at T.D.C. a s this w i l l
cause the valves to be bent. Turn the crankshaft back through 90' to bring the
pistons half-way down the cylinders. Do not turn the crankshaft BEYOND 90°
back whilst the camshaft driving (toothed) belt i s
OFF
otherwise there i s danger
of the pistons contacting any valves which may be off their seats.
TO
Replace
1. Reverse the removal procedure. Before f i t t i ng bet t, ensure correct position
of crankshaft, camshafff and auxiliary shaft sprocket
(fig
-1
3).
2.
After fitment, adjust belt tensibn, and check ignition timing.
If
a new belt
has been fitted, run the engine for a minimum of two minutes, switch off and
recheck tension.
EA .9.
-
DRIVING BELT
TENS! ONER
-----
To Remove
Carry out the procedure detailed i n S e c t i o n s .8.for removing the camshaft drive belt,
although i t w i l l not be necessary to actually remove the belt. Release the bolts or
bolt and nut securing the tensioner assembly, making careful note of a l l the bracket
positions and spacer washers. Remove the tensioner.
O n some can
(i
.e. air conditioned) with two
bol
ts securing the tensioner, i t
may
not be necessary to remove the crankshaft
.'V'
pulley,
,
.
To Replace
.
. .
; Rkvene the remo&l procedure checking the valve timing, i & i ' & n timing and
.
,
. . ;
.
: '
belt t e n i i a n ' a ~ d nddjusting as necessary. ~ d i u r t the
pd'ley snubber for
4- C
a clearance of 0.4
-
0.1 mm (0.016
-
0.004 in.) between the pad and toothed
.
belt.