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ENGINE 1.3 QUADRAJET (75PS)
54
46.Fit the caps (1b) on the connecting rods (1a) and
secure them by tightening the M8 bolts (1c) to the
recommended torque of 1.9 ~ 2.1daN m + 40° +/
- 2°.
NOTE :
The connecting rods are pre-set fracture type
and are supplied already fractured by Parts together
with the cap bolts. The connecting rod caps are not
interchangeable because the fracture profile differs from
part to part.
47.Check that the big end diameter (2) (without fitting
the half-bearings) is within the recommended limits
of 45.734 mm ~ 45.744mm; if not, replace the
connecting rods.
48.Check that there are no signs of seizing on the
flywheel ring gear teeth; if this is not the case,
replace it.
49.Refit the engine oil jets in their seats and secure
by tightening the M6 bolts to a torque of 0.8 ~ 1.0
Kg-m .
NOTE :
The crankshaft supplied by the Parts Dept.
40.Check that the thickness of the piston rings is
within the recommended limits.
Cylinder compression 1st sealing
ring thickness (mm)
1.970 ~ 1.995
Cylinder compression 2nd sealing
ring thickness (mm)
1.470 ~ 1.490
Piston oil scraper ring size (mm)
1.970 ~ 1.990
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) 1.53 ~ 1.55
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.
comes without half-bearings and the main journals
and crankpins are the “normal” size; the half-
bearings to be fitted must therefore be selected
identifying the class of each main journal and
crankpin for the new crankshaft.