Mazda 323 1988 Workshop Manual page 72

ASSEMBLY 1
A
63"Ol X -09
.33"01A-1C
Crankshaft
1. Inspect the oil clearances of the crankshaft and
main bearings.
Caution
The main bearing with the oil grooves must
be installed in the cylinder block.
(1) Remove any foreign material and oil from the
journal and bearing.
(2) Install the main bearings and the crankshaft.
(3) Position the plasti-gauge on top of each jour-
nal (in the journal axial direction), away from
the oil hole.
(4) Set the main bearing caps according to the cap
number and m mark, and trghten it.
Note
Do not rotate the crankshaft when measuring
the oil clearances.
Tightening torque:
54-59 N.m (5.5-6.0 m-kg, 40-43 ft-lb)
(5) Remove the main bearing cap, and measure
the plasti-gauge at each journal at the widest
point for the smallest clearance, and at the nar-
rowest point for the largest clearance.
Oil clearance:
0.024-0.042 mm (0.0009-0.0017 in)
Maximum:
0.10 mm (0.0039 in)
(6) If the oil clearance exceeds the limit, grind the
crankshaft and use undersize main bearings.
Undersize main bearings:
0.25 mm (0.010 in), 0.50 mm (0.020 in)
1 A-53