Yaroslavl ???-236, Maintenance Manual

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N
um
be
r o
f t
he
d
ef
ect
L
oc
at
ion o
f
th
e p
ic
tu
re
Possible defect
Way for defect detection and
means of control
Dimension and parameter, mm Conclusion
nominal maximum allowable
without repair for repair
4
А
Wear of the face surface:
Clamp СРП 25
Dimension Г:
- To reject
20
-0,084
5
В
Wear of the bushing hole
for the axis Inside gauge
18-50
Ø35
+0,039
35,09 -
To replace the bushing
Technical requirements for the repaired assembly unit
Number of the
defect
1 Coaxiality tolerance of the hole V relatively to the axis of the pitch circle of the gear – with 0.03 mm
Radius 5
2 Non-perpendicularity tolerance of the surface B relatively to the surface A – with radius 0.02 mm 5
3 Bushing should not exceed the joini
ng face surface А of the gear
5
4 Roughness of the surface
В
should not exceed Ra 1.25 micron according to the GOST 2789-73 5