6.3.3. Adjustment of the drive of brakes

Fig. 6.11. Drive of brakes: 1 – main cylinder; 2 – tank; 3 – sensor of emergency level of liquid; 4 – vacuum amplifier; 5 – pusher; 6 – brake pedal; 7 – stoplight switch buffer; 8, 9 – nuts of fastening of a stoplight; 10 – stoplight switch; 11 – returnable spring of a pedal

The free wheeling of a pedal of a brake at the idle engine has to make 3–5 mm. Adjustment is carried out movement of the switch 10 (fig. 6.11) of a stoplight at the released nuts 8 and 9.

       PREVENTION
Regulate a free wheeling of a pedal of a brake at the idle engine.

Install the switch so that its buffer rested against a pedal emphasis, and the free wheeling of a pedal equaled 3–5 mm. In this position of the switch tighten nuts 8 and 9.

Fig. 6.2. Vacuum amplifier: 1 – rod; 2 – sealing ring of a flange of the main cylinder; 3 – cup of the case of the amplifier; 4 – adjusting bolt; 5 – rod sealant; 6 – returnable spring of a diaphragm; 7 – hairpin of the amplifier; 8 – sealing cover; 9 – case of the amplifier; 10 – diaphragm; 11 – cover of the case of the amplifier; 12 – piston; 13 – protective cover of the case of the valve; 14 – air filter; 15 – pusher; 16 – returnable spring of a pusher; 17 – valve spring; 18 – valve; 19 – valve case plug; 20 – rod buffer; 21 – valve case; And — the vacuum chamber; In — the atmospheric camera; With, D — channels

If the switch of a stoplight is brought excessively closer to a pedal, then it does not come back to a starting position. At the same time the valve 18 (see fig. 6.2), nestling on the case 21, separates cavities And yes In and there is an incomplete disinhibition of wheels at the released pedal.
If movement of the switch of a stoplight did not possible to eliminate an incomplete disinhibition of brake mechanisms, then disconnect the main cylinder of the drive of brakes from the vacuum amplifier and check a vystupaniye of an adjusting bolt 4 concerning the plane of fastening of a flange of the main cylinder (size of 1,25-0,2 mm). This size can be established, holding with a special key the end of a rod, and other key turning or unscrewing a bolt 4.