UAZ PATRIOT Operation Manual page 147

3. Screw bolt 3 until it touches piston tail 17 (see Fig. 9.33)
of the valve.
4. Tighten bolt 3 (see Fig. 9.34) for 2-3 turns (14 edges of
the bolt head).
5. Tighten the locknut.
6. Check the stroke of the valve piston (see above).
7. Check adjustment correctness in motion of the motor
vehicle. While going on a straight level road with dry surface,
brake the motor vehicle until wheels block. If the valve is in
order and drive adjustment is done correctly, the front wheels
should be blocked slightly earlier than the rear ones. If the rear
wheels are blocked earlier, unscrew bolt 3 for 1-2 edges of the
bolt head and check the brakes in motion again.
Change the fluid regularly for proper work of the brakes:
drain old fluid via the bypass valves of wheel cylinders and
proportioning valve, and then replace it with a new one.
fill the brake system as follows:
WARNING! Filling the brake system of ABS-equipped motor
vehicles is necessarily carried out at a service station as it requires
additional diagnostic equipment.
1. Check all couplings of the brakes hydraulic drive for
leakages and the flexible rubber pipes and hoses.
2. Clean the bypass valves and the safety caps of wheel
cylinders, crankcases and proportioning valve from dust and dirt.
3. Clean the tank of master cylinder from dust and dirt around
the cap and uncover it. Fill the tank with brake fluid up to MAX
mark.
4. Press the brake pedal several times to eliminate the effect
of depression in the brake booster.
5. Bleed successively the chambers of the right and left rear
brakes wheel cylinders, the front circuit of the proportioning
valve (for non-ABS motor vehicles), and then the right and left
crankcases of front brakes.
Bleed the system as follows:
WARNING! While bleeding, add the fluid to the master cylinder
tank in time and do not let the fluid level decrease lower than 2/3
of the tank volume. Do not let air come into the system.
If air comes into the brake system of the ABS-equipped motor
vehicle, contact a service station. It is forbidden to operate a motor
vehicle until the malfunction is eliminated.
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