Chrysler Conquest 1988 Service Manual page 761

ENGINE
- Crankshaft, Flvwheel and Drive Plate
9-61
/
\'
3EN05E
3EN055
,
I .
Plastic-gauge i
6EN04:
1 EN061
INSPECTION
CRANKSHAFT
NOLIUCAA
(1) Check the crankshaft journals and pins for damage, uneven
wear and cracks. Also check oil holes for clogging. Correct
*or replace any defective part.
(2r Inspect out-of-roundness and taper of crankshaft journal
and pin.
Standard value:
Crankshaft journal O.D.
60 mm (2.36 in.)
Crank pin O.D. 53 mm (2.09 in.)
Out-of-roundness of journal and pin
0.015 mm (.0006 in.)
Taper of journal and pin
0.005 mm (.0002 in.)
MAIN BEARINGS AND CONNECTING ROD BEARINGS
NOSUCBA
Visually inspect each bearing for peeling, melt, seizure and
improper contact. Replace the defective bearings.
OIL CLEARANCE MEASUREMENT
NOSUCCB
'To check the oil clearance, measure the outside diameter of the :..-
crankshaft journal and the crank pin and the inside diameter of
the bearing. The clearance can be obtained by calculating the
difference between the measured outside and inside dia-
meters.
Oil clearance:
Crankshaft main bearing
0.021 - 0.046 mm (.OOOS - .0018 in.)
Connecting rod bearing
0.019 - 0.056 ,mm (.0007 - .0022 in.)
Plastic-gauge may be used to measure the clearance.
(1) Remove oil and grease and any other dirt from bearings and
journals.
(2) Cut plastic-gauge to the same length as the width of the
bearing and place it in parallel with the journal, off oil holes.
(3) Install the crankshaft, bearings and caps and tighten them
to the specified torques. During this operation, do NOT turn
the crankshaft.
(4) Remove the caps. Measure the width of the plastic-gauge
at the widest part by using a scale printed on the
plastic-gauge sleeve.
(5) If the clearance exceeds the repair limit, the bearing should
be replaced or an undersize bearing used.
When installing a new crankshaft, be sure to use standard
size bearings.
(6) Should the standard clearance not be obtained even after
bearing replacement, the journal should be ground to
undersize and a bearing of the same size should. be
installed.