6.3.5. Check of operability of the regulator of pressure on the car

Install the car on the elevator or a viewing ditch, clear the regulator of pressure and a detail of its drive of dirt.

Fig. 6.4. Pressure regulator: 1 – pressure regulator case; 2 – piston; 3 – protective cap; 4, 8 – lock rings; 5 – piston plug; 6 – piston spring; 7 – case plug; 9, 22 – basic washers; 10 – sealing rings of a pusher; 11 – basic plate; 12 – pusher plug spring; 13 – ring sealing valve saddles; 14 – valve saddle; 15 – sealing laying; 16 – stopper; 17 – valve spring; 18 – valve; 19 – pusher plug; 20 – pusher; 21 – piston head sealant; 23 – piston rod sealant; 24 – cap; And, D — the cameras connected to the main cylinder; In, With — the cameras connected to wheel cylinders of back brakes; To, M, N — gaps

Fig. 6.3. Pressure regulator drive: 1 – pressure regulator; 2, 16 – bolts of fastening of the regulator of pressure; 3 – pressure regulator drive lever arm; 4 – pin; 5 – pressure regulator drive lever; 6 – pressure regulator drive lever axis; 7 – lever spring; 8 – body arm; 9 – arm of fastening of the regulator of pressure; 10 – elastic lever of the drive of the regulator of pressure; 11 – earring; 12 – earring bracket; 13 – washer; 14 – lock ring; 15 – arm finger; And, In, With — openings

Be convinced by external survey that the regulator of pressure and a detail of its drive have no damages, there is no dribble of brake fluid, a cap 24 (see fig. 6.4) is drowned in a case opening on 1–2 mm, there is no side play in connection of an earring 11 (see fig. 6.3) with the elastic lever 10 and a finger of the 15th arm.
Ask the assistant to press a brake pedal. The piston 2 (see fig. 6.4) at the same time has to start from the case on 1,6–2,4 mm, squeezing a lamellar spring 7 (see fig. 6.3) against the stop it in the lever 5. The lever 5, overcoming effort from the elastic lever 10, will turn concerning a pin 4.
Discrepancy to the listed requirements, lack of a piston stroke, and also its insufficient or excessive course testify to malfunction of the regulator or its drive. In this case repair or replace pressure regulator, and after its installation adjust its drive (see subsection. "Adjustment of the drive of the regulator of pressure").