Hyundai Sonata 1991 Shop Manual page 93

DISASSEMBLY
CRANKSHAFT
Y20NAOA
1. Remove the timing belt train, front case, flywheel cylinder
head assembly and oil pan. For details, refer to respective
chapters.
2. Remove the rear plate and the rear oil seal.
3. Remove the connecting rod caps.
NOTE
Mark the main bearing caps to permit reassembly in the
original position and direction.
4. Remove the main bearing caps and remove the crankshaft.
Keep the bearings in order by cap number.
Standard value
Crankshaft journal
0.0 .
56.980-56.995
mm
(2.2433-2.2439
in.)
Crankshaft pin
0.0 : .
44.980-44.995
mm
(1.7709-1.7715
in.)
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.
2. Inspect out-of-roundness and taper of crankshaft journal and
pin.
INSPECTION
Crankshaft
Y20NBOA
20Y139
Main Bearings and Connecting Rod Bearings
Visually inspect each bearing for peeling, melt, seizure and
improper contact. Replace the defective bearings.
Oil Clearance Measurement
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 diameters.
Standard value
Oil clearance
Crankshaft main bearing .
0.02-0.05
mm
(0.0008-0.0020
in.)
Connecting rod bearing .
0.02-0.05 mm (0.0008-0.0020 in.)
20-62
@[]
•
20Y140