Yaroslavl ???-236, Руководство по обслуживанию

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N
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Possible defect
Way for defect detection and
means of control
Dimension and parameter, mm Conclusion
nominal maximum allowable
without repair for repair
5
В
Thread stripping М16х1.5-
4Н5Н
no more than one thread
Inspection.
To calibrate the
thread
Note - Piston rod 236-1004050-
В2 and piston rod cover 236-1004055-Г2 should not be pooled and should come for inspection,
repair and assembling in the kit.
* Hole diameter after the re-assembling of the piston rod with cover.
Technical requirements for the repaired assembly unit
Number of the defect
1 Parallelity tolerance of the hole А relatively to the hole Б – 0.04 mm at the length 100 mm …………..
3
2 Circularity tolerance and profile tolerance of the longitudinal section of the hole А – 0.0025mm……………………
3
3 Roughness of the hole А according to the GOST 2789-73 should not exceed Ra 0.63micron ……………………
3
4 Circularity tolerance and profile tolerance of the longitudinal section for the hole B - 0.005 mm
……………… 4
5 Roughness of the hole B according to the GOST 2789-73 should not exceed Ra 0.5 micron …………………… 4