ENGINE 1.3L QUADRAJET (90PS)
61
32.After checking all the main journals, apply a strip
of specified silicon sealant to the contact surfaces
between the lower crankcase and the upper
crankcase as shown in the figure above.
NOTE :
The sealant strip must be unbroken. The sealant strip
diameter must be 2.5 - 3.5 mm.
33.After applying the sealant clean the crankshaft
lower oil seal seat.
34.Fit the lower crankcase to the upper crankcase
permanently by tightening the bolts as shown
previously.
35.Check that the small end bush bore (inner
diameter) diameter is within the recommended
limits of 23.006 mm ~ 23.012 mm; if not, replace
the connecting rod assemblies.
36.Check that the diameter of the gudgeon pin
housing in the piston is within the recommended
values of 22.990 mm ~ 22.996 mm.
37.If the piston pin bore diameter is not within
specified values, replace the piston complete with
its piston pin and rings.
38.Check that the outer diameter of the piston pins is
within the recommended limits of 22.982 mm ~
22.987 mm; if not, replace the worn piston pins.
39.Fit the piston rings in the cylinder bore and check
that the opening between the ends is within the
recommended values; if this is not the case,
replace the retaining rings.
40.Check that the thickness of the piston rings is
within the recommended limits.
41.Check that the piston ring seats are within the
following recommended values.
Sealing ring seat in piston - 1st groove (mm) 2.08 ~ 2.10
Sealing ring seat in piston - 2nd groove (mm) 1.54 ~ 1.56
Sealing ring seat in piston - 3rd groove (mm) 2.02 ~ 2.04
42 Check that the outer diameter of the pistons
corresponds to the recommended figures; if not,
replace the piston complete with piston rings and
gudgeon pin.
Piston outer diameter - Grade A (mm)
69.520 ~ 69.530
Piston outer diameter - Grade B (mm)
69.530 ~ 69.540
Piston outer diameter - Grade C (mm)
69.540 ~ 69.550
NOTE :
Measure perpendicular to the gudgeon pin axis, 12
mm from the lower edge of the skirt.
43.Check that the axial clearance between the first
ring and the housing in the piston corresponds to
the recommended figures of 0.09 mm ~ 0.13mm.
44.Check that the backlash (1a) between the second
ring (1b) and the housing in the piston (1c)
corresponds to the recommended figure of 0.04
mm ~ 0.08 mm.
45 Check that the backlash between the oil scraper
ring and the housing in the piston corresponds to
the recommended figures of 0.030mm ~
0.070mm.
Cylinder compression 1st sealing 1.970 ~ 1.995
ring thickness (mm)
Cylinder compression 2nd sealing 1.470 ~ 1.490
ring thickness (mm)
Piston oil scraper ring size (mm) 1.970 ~ 1.990
Cylinder compression 1st sealing 0.20 ~ 0.30
ring gap (mm)
Cylinder compression 2nd sealing 1.0 ~ 1.5
ring gap (mm)
Piston oil scraper ring gap (mm) 0.25 ~ 0.50
