REPAIR valve gear. Grinding valve job facets
Grinding the working facets of valves should be made
to correct the eccentricity, resulting in the valve
when the engine is running, and to eliminate the wear and damage
on the conical surface of the chamfer.
When sanding is necessary to take a minimum layer of metal,
in order to bring only the blackness, shells and the beating,
available on the bevel valve. If the bevel found
cracked or badly warped the head itself, the valve
rejected. When sanding to make sure that
Bevel did not leave on the cutting edge and always remained a cylindrical
a belt of at least 0.5 mm.
When checking the valve is placed on the beats of the prism 2,
mounted on a plate, so that the end of it rested on the ball 4
uglovogoupora seamed to the body 5.
Two indicators 6 and 7, fixed in holders 3, sum
measuring rod tip to the valve and its bevel
rod. Turn the valve, the indicator will show a run-out
Working bevel and the other - the beating of the rod. permissible runout
chamfer noxtexceeding 0.02 mm rod - 0.02 mm.