Fig. 8.5. The brake mechanism of forward wheels: 1 — a brake disk; 2 — the basis brake скобы; 3 — the case brake скобы; 4 — brake колодки; 5 — the piston; 6 — a sealing ring; 7 and 9 — protective covers; 8 and 12 — bolts; 10 — a directing finger; 11 — a wheel nave; 13 — a spring колодки; 14 — a hose of a supply of a brake liquid; 15 — a directing finger; 16 — the prorolling valve

Brake mechanisms of forward wheels — disk with floating скобой. The brake disk 1 (fig. 8.5) has ventilating apertures for heating reduction at braking and fastens on a nave of wheels of a forward axis.

Floating скоба consists of the basis 2 which fastens to a rotary fist, and cases 3 which through directing fingers 15 is movably connected with the basis. Protective covers protect fingers from hit in them of a dirt and a moisture. In the case 3 are placed the piston 5 and details of its consolidation: a ring 6 and a protective cover 7. For removal of air from the case cylinder the valve of prorolling 16 with a cap is provided. Brake колодки 4 are located in a groove of the basis and are drawn in to ledges of the basis by the springs fixed on колодках.

For protection of working surfaces of a disk and колодок from hit on them a dust, a dirt, greasings the special guard is established.

At braking from pressure of a liquid in a hydrodrive the piston 5, moving to the case 3, presses internal brake колодку to a disk 7, and the case, being displaced on fingers 15 in a direction opposite to movement of the piston, presses external колодку to a disk. Effort of a clip both колодок to a disk equally and in direct ratio to pressure in a hydrodrive.

At растормаживании колодки depart from a disk on a constant defined by rigidity of a sealing ring of 6 pistons. It reaches backlash automatic control between колодками and a disk and deterioration of overlays is compensated.