S40/V40
1. General information
2. Operation and maintenance of the car
3. Design and technical characteristics of engines
4. Repair of the engine
5. Transmission
6. Brake system
6.1. General information
6.2. Appointment and short description of elements of hydraulic system of a working brake
6.3. Electric system
6.4. Technical characteristics
6.5. Parking brake
6.6. Technological service and repair of the brake system
7. Forward suspension bracket and steering
8. Back suspension bracket
9. Control system of the Fenix 5.1 engine
10. Electric equipment. Conducting and components
11. Body
12. Schemes of electric equipment
 







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6.5. Parking brake

Fig. 6.3. Mechanism of the parking brake: 1 — a brake disk; 2 — brake shoes; 3 — the piston; 4 — a nut; 5 — the screw; 6 — a plate; 7 — a shaft; 8 — the lever; 9 — an arm; 10 — a ring; 11 — a ball; 12 — a spring; 13 — a floating bracket


The parking brake affects back wheels. Its driving lever is located between front seats. The lever is supplied with a ratchet which is released by pressing of the button on the lever. From the lever via the balance weight to each wheel there is a cable. When raising the lever of a parking (manual) brake the cable moves concerning the braid leaning on an arm 9 and for the lever 8 turns around an axis a shaft 7 on which other end the plate 6 with three conic nests of variable depth is located. In each nest there is a ball 11. Together with a ring 10 of these details form the mechanism which at a provorachivaniye forces a shaft 7 to move in the axial direction. Conic nests are executed so that originally big, in relation to rotary, axial movement, becomes small (loses in a way — wins in force). It increases the transferred effort. Axial movement of a shaft 7 is transferred to a screw head 5 which, squeezing a spring 12, 4 transmits effort through a nut to the piston 3 mounted in a floating bracket 13 and together with a bracket, working through brake shoes 2, clamps a brake disk 1. The effect of self-regulation of the parking brake occurs because in process of wear of couple "brake shoes — the brake disk" appears the increased gap and, without encountering resistance, a shaft 7 turns the screw 5 concerning a nut 4 that leads to reduction of a gap between brake shoes and a disk. Couple "the screw — a nut" (poses. 5 and 4) has a side play in the threaded connection that allows the brake mechanism to release a brake disk when the parking brake is not involved.

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6.4. Technical characteristics
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6.6. Technological service and repair of the brake system