To check the pump first, make sure
in good relief valve (Fig. 46).
To check the valve is set on a special stand and
pressure tested, and the watch the moment
Primary and fully opening the pressure reducing valve.
Check valve for industrial oil prooizvoditsya
And brand-5A GOST 20799-88. At a pressure of up to 3 kg \ cm2
valve must be closed, leakage is allowed only
individual drops. At a pressure of 6 kg \ cm2 valve must
be opened completely, the oil must flow continuously
jet. If necessary, bevel grind the valve to the
seat in the body, and the force of compression spring adjust screw.
After the final assembly of the oil pump
check it out on a special stand. As a working
fluid on the stand, use an industrial grade oil
I-5A at 20 ± 5 * C.
When speed of the pump shaft 250 1 \ minutes, and with closed
Outlet oil pressure should not be less than
2.0 kg \ cm2.