Precise matching part technology condition simple inspection method

In peacetime, repair and maintenance of machinery, due to the lack of inspection equipment and specialized equipment could help observe, touch, and feel to identify auscultation Plunger Couples, filling valve dual injection Tsui and the quality of the good or bad and whether continue to be used. Are respectively as follows:

1. Plunger Couples inspection

1.1 Identification of experience
(1) According to the plunger with dual sliding pieces determine whether the situation can. The plunger will be clean-and 45 �� tilt, pulled out the length of the plunger 1 / 3, to any location regardless, Songshou after themselves in the role of the plunger can slowly whereabouts. But not too fast or the whereabouts of stagnation card, it shall be repaired or replaced.
(2) According to the plunger-and determine whether traces of wear and tear can
Plunger wear mainly concentrated in the head and showed signs of wear gray, non-luminous. Test shows that the plunger diameter of 8.5 mm, when signs of wear head reached 4 ~ 5 mm wide, 10 mm long 9 ~, or using fingernails scraping, with a clear sense, can not generally continue to be used. Moreover, the blunt edge angular mill, spalling or corrosion phenomenon, as well as a plunger sets of cracks or holes in a deep scar can not continue to use it.