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RS4 50 MY2011
Installing the cylinder
- Lubricate both the cylinder and the piston faying
surfaces and the sealing circlips
- Carefully fit the cylinder in the piston being careful
to press the sealing circlips in their positions
- Fit a new head gasket and refit the cylinder head
- Mount the head cover
- Fit a new spark plug
- Connect again the temperature sensor connec-
tors and the spark plug cap
- Fill up the cooling system being careful to purge
it
Selecting the base gasket
CAUTION
NEVER REUSE A GASKET BASE OF REMOVED CYLINDERS.
ALWAYS INSTALL A NEW ONE.
TO FACILITATE THE INSTALLATION, grease THE INTERNAL SURFACE OF THE CYLINDER
WITH RECOMMENDED ENGINE OIL.
IN CASE THAT HAVE BEEN REPLACED THE PISTON OR THE CYLINDER, IT IS NECESSARY TO
CALCULATE THE THICKNESS OF THE NEW GASKET TO BE INSTALLED, TO ESTABLISH THE
REPORT OF APPROPRIATE COMPRESSION.
MEASURE WITHOUT PLACING GASKETS BETWEEN CYLINDER AND DIAL GAUGE.
NOTE
MAKE SURE THAT THE COMPARATOR DOOR IS PROPERLY FITTED TO THE STUD BOLTS, TO
AVOID POSSIBLE CLEARANCES THAT CAN DELETE THE MEASURE.
CALCULATION OF THE BASE GASKET
THICKNESS
•
Install the dial gauge on the suitable
special tool AP8140266.
•
Connect the dial gauge on a flat sur-
face and adjust it to point zero.
•
Place the piston to the top dead center
and carry out the measure.
•
Select the cylinder base gasket for the
values of the table.
Specific tooling
AP8140266 Comparator door
Engine
ENG - 121
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