Yaroslavl ???-236, Maintenance Manual

Page: 172 / 270

4
5
6
Д
И
A
Wear of the shaft bearing for
the joint flange
Wear of the key slots
Thread stripping М24х2-6g
no more than two threads
Inspection
-
-
-
-
To reject
To calibrate the thread
Technical requirements for the repaired part
Number of the defect
1 Relatively to the axis of centres circular runout tolerance:
- for surfaces B,
В and Д – 0.02 mm;
-
for surface Г – 0.03 mm……...................................................................................................................................................................................…
2, 3, 4
2 Roughness of the surfaces according to the GOST 2789-73 should not be more than:
-
for surface Г – Ra 0.63 micron;
..........................................................................................................................................................................3
- surfaces
Б and В – Ra 1.25 micro
........................................................................................................................................................................2
3 Diameter of the bearing for the cuff after the processing till the elimination of the defect should be no less than 29.92 mm
.......................................3