Exhaust Concentration Test; Procedure For Tensioning Pump Drive Belt - Lotus Esprit Series Workshop Manual

EXHAUST
CONCENTRATION
Unscrew the plug fitted i n the front end of the cotolytic converter ond f i t odopter
1 .
and sample pipe (Part N o . TOOQT0321A).
2.
3.
and diverter valve) from the air pump and blank off the hose with plug (Port N o .
With exhaust concentration anolyser attached to the sample pipe check the
4.
reading.
Adjust mixture as necessary. After every adjustment run the engine briefly at
piston i n the dash pots have settled correctly. For North American vehicles
(except California), with o prefix
"Lumenition" distributor, the idle C O level should be less than
a n d 2 t o 3 . s w i t h a i r o f f .
FOR TENSIONING
PROCEDURE
1.
Slacken off the two pivot bolts under the pump just sufficient to allow movement
of the pump.
Slacken off the two bolts on the tensioner.
Move air pump to obtain the correct belt tension (see TECHNICAL DATA).
3.
Tighten a l l fixing and tensioner bolts to a torque l w d i n g of 20lb.ff. (2.7k.grn)
and recheck belt tension.
TEST
then check the mixture at idle speed.
H
PUMP DRIVE BELT
with engine at normal running temperature.
This
i s to ensure that the
on the engine number and fitted with a
EN G IN E
Page
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1%
with air on
ESPRIT
'