Connecting Rod Inspection (4.0L); Crankshaft Inspection (4.0L) - Mazda B-Series 1997 Workshop Manual

INSPECTION I REPAIR
2. Measure the piston pin diameter in
>(:
and
Y
directions at
four points.
Diameter
Red: 23.992-23.997mm (0.9446i0.9448 in}
Blue: 23.992-24.000mm (0.9446-4.9449 in}
3. Calculate the piston pin-to-piston clearance.
Clearance: 0.007-0.01 5mm (0.00034.0006 in)
4. If the clearance exceeds specification, replace the piston
and/or piston pin.
CONNECTING ROD
1. Measure the connecting rod small end bore.
Diameter: 23.957-23.975mm (0.94324.9439 in)
Caution
If the connecting rod is replaced, the connecting
rod cap and bolts must also be replaced, since they
are a matched set.
2.
Check the bend arid twist factor of the connecting rod.
Repair or replace as necessary.
Bend: 0.050mm (0.002 in)
Twist: 0.1524mm (0.006 in}
Length (Center to Center):
130.52-1 30.58mm (5.1 386-5.11 41 3 in)
CRANKSHAFT
1.
Check the journals and pins for damage, scoring, and oil
hole clogging.
2.
Set the crankshaft on V-blocks.
3. Measure the crankshaft main journal runout at the No.2
and No.3 journals.
4. If runout exceeds the maximum, replace the crankshaft.
Runout: 0.0508mm (0.002 in}
Max: 0.127mm {0.005 in)