3.10.11. Check of tightness of a head of cylinders

For hydraulic test for tightness of a shirt of cooling of a head of cylinders:

Fig. 3-51. Check of tightness of a head of cylinders on A.60334 adaptation:
1, 2, 4 — caps; 3 — adaptation plate; 5 — a flange with the water supply union.

— establish on a detail head, being included in the package of A.60334 adaptation (fig. 3-51);
— force the pump water in a head under pressure of 0,5 MPas (5 kgfs/cm2).
Within two minutes leak of water from a head should not be observed. At detection of cracks the head of cylinders needs to be replaced.
It is possible to check tightness of a head of cylinders compressed air for what:
— establish on a head of cylinders of a detail, the A.60334 devices which are included in the package;
— lower a head of cylinders in a bathtub with the water heated to 60–80 °C and let's a head of cylinders get warm within 5 min.;
— give in a head of cylinders compressed air under pressure of 0,15–0,2 MPas (1,5–2 kgfs/cm2).
Within 1–1,5 min. etching of air from a head of cylinders should not be observed.