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ENGINE 1.3L QUADRAJET (90PS)
41
3A.1.2.2.6 CYLINDER HEAD BLOCK
A. HEAD GASKET CORRECTION BASED ON
CYLINDER HEAD BLOCK PLANARITY
.
1. Clean any residues of the old gasket from the
lower cylinder head plane.
2. Clean traces of the oil gasket off the mating
surfaces between the cylinder head and the
cylinder head extension.
3. Check that the planarity of the lower cylinder head
plane corresponds to the recommended value of
0.1mm.
4. If the lower surface flatness of the lower cylinder
head is not within specified values, grind from the
nominal head height and then fit a new gasket
with the number of notches determined as
described below.
a. The head may be leveled to 0.1 m if starting
from a gasket with 0 notches and using a new
gasket with 1 notch.
b. The head may be leveled to 0.2 m if starting
from a gasket with 0 notches and using a new
gasket with 2 notches.
c. The head may be leveled to 0.1 m if starting
from a gasket with 1 notch and using a new
gasket with 2 notches.
NOTE
Q
The above process is not used to determine the
Cylinder head gasket but by assuming that the
starting gasket is determined based on the piston
projection (given under head “Selection of Cylinder
head gasket”) it may be further altered based on
the leveling done to the cylinder head.
Q
When within limit conditions (head gasket with 2
notches before leveling), the lower head surface
cannot be leveled.
5. The nominal height of the cylinder head is 105.5
mm+/- 0.05.
6. Check that the valves do not show signs of grooves
or seizing .