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15.3. Check of operability of the regulator of pressure

 PERFORMANCE ORDER

We check pressure regulator with the assistant on a viewing ditch.
We clear the regulator and a protective cover of dirt. We remove a protective cover from the regulator and we delete the lubricant remains from the place of a contact of the piston from the end of the lever.
The assistant presses a brake pedal with effort 70–80 kgfs. At the same time we watch movement of the acting part of the piston of the regulator.
At the serviceable regulator movement of the piston at the same time has to make 0,5–0,9 mm. If when pressing a pedal the piston remains motionless – the regulator is replaced.