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ENGINE 273 MPFI
Selection of Shims
Step 1:
Put master shims of thickness 3 mm on all 4 valve
retainers. Put tappet and cam shaft over it.
Step 2:
Rotate the cam shaft and bring it to TDC position. Then
measure the clearance between tappet and cam shaft
lobe for inlet valve with the help of feeler gauge. Note
down the clearance.
Step 3:
Remove the TDC plate and again rotate the camshaft
and bring it to TDC position. Measure the clearance
between tappet and cam shaft lobe for exhaust valve
with the help of feeler gauge. Note down the clearance.
Calculation For Shim
Use the following formulae for selection of shim.
For inlet valve:
S = M + (C - 0.15)
For exhaust valve:
S = M + (C - 0.25)
S = Required Shim Thickness
M = Thickness of Master Shim i.e. 3 mm
C = Valve Clearance measured with the feeler gauge
when master shim is placed on valve retainer.
Step 4:
Remove the master shim from retainer. Select proper
shim as per calculation from shim box.
Select the shim size from the available sizes. Shim
size available from 2.5 mm thick to 3.9 mm thick at
the intervals of 0.050 mm and 2.525 mm thick to 3.875
mm thick at the intervals of 0.050 mm. Put the shims
of required thickness in respective places. Put tappet
and camshaft over it. Again measure the clearance
between tappet and camshaft lobe and ensure specified
valve clearance.
•
To access upper mounting bolt of the alternator,
remove rear shelf / Lift the vehicle on two post lift.
•
Loosen upper bolt of the alternator i.e. belt-tension
adjusting bolt.
•
Remove V-belt from damper pulley.
•
Remove the belt from alternator pulley.
ALTERNATORBELT REMOVALANDREFITMENT
PROCEDURE
Removal Procedure
•
Remove negative terminal of battery .
PRECAUTION
Ensure that the removed terminal is away from
the battery negative post.
•
Position the car on a two post lift.
•
Loosen lower mounting bolt of alternator.
•
Check the condition of belt. Replace if wear down
or any cut is found.