Yaroslavl ???-236, Maintenance Manual

Page: 68 / 270

Technical requirements for the repaired assembly unit
1 Tolerance for flatness of the surfaces Д and E – 0.02 at the length 100 and 0.05-ГЦ:236.236Д; 0.06-ГЦ:238.238Д
at the whole length………………………………………………………………………………………………….………
2 Block head should have water pressure test for sealing from 0.3 to 0.4 MPa (from 3 to 4 kfg/cm
2
) during 2 min or kerosene test
during 2 min. Water or kerosene leakage is not permitted
………………………………………………………………………………………………….………………….
3 Dimension И after the processing till the elimination of the defect should be no more than 131.2 mm ……………………...
Number of the
defect
6, 10
-
6, 10