Hyundai HDF 50-7S, Руководство по обслуживанию

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INSPECTION AND REPAIR OF BASIC ENGINE
6-26
4.18 Measuring crankshaft end play
(1)
Measure the crankshaft end play (clearance between the
crank arm at the thrust force receiving journal and the
bearing cap with thrust plate attached). If the limit is
exceeded, replace the thrust plate with a new one.
(2)
If the limit is still exceeded after a new thrust plate has
been installed, use an oversize thrust plate.
Note: In general, the rear thrust bearing wears faster than
the front thrust bearing. Therefore, in most cases, the
correction is achieved by replacing the rear thrust
plate with the next oversize one.
Width of crankshaft thrust journal
Measuring crankshaft end play
4.19 Measuring crankshaft runout
Support the crankshaft at the front and rear journals with V-
blocks, and measure the crankshaft runout at the center
journal using a dial gauge. If the runout deviates from the
standard only slightly, grind the crankshaft to repair. If the
runout exceeds the standard considerably, straighten the
crankshaft using a press.
If the limit is exceeded, replace the crankshaft.
If the crankshaft has been repaired by grinding or pressing,
inspect the crankshaft for cracks and other harmful damage
using a magnetic particle method.
Measuring crankshaft runout
Item Standard Limit
Crankshaft end play
0.100 to 0.264 mm
[0.0039 to 0.0104 in.]
0.300 mm
[0.0118 in.]
Crankshaft thrust size after grinding
Item
OS, used
on one side
OS, used
on both sides
Tolerance
+0.15 mm
[+0.0059 in.] OS 31.15 mm
[1.2264 in.]
31.30 mm
[1.2323 in.]
0
+0.039
mm
[
0.00
+0.0015
in.] +0.30 mm
[+0.0118 in.] OS 31.30 mm
[1.2323 in.]
31.45 mm
[1.2382 in.]
31
+0.039
0
mm
[1.22
+0.015
0.00
in.]
Item Standard Limit Remark
Crankshaft
runout 0.04 mm
[0.0016 in.] or less
0.10 mm
[0.0039 in.]
TIR
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