10.7. Brake pedal
For improvement of access remove an air duct under the dashboard.
Fig. 10.18. Elements of fastening of a pedal of a brake: 1 – bolt; 2 – flat washer; 3 – spring washer; 4 – nut; 5 – plugs; 6 – forelock; 7 – returnable spring; 8 – overlay of a pedal; 9 – brake pedal; 10 – a pin with a head and an opening under the forelock; 11 – axis
Remove the forelock and take a pin with an opening under the forelock (fig. 10.18).
Turn out a coupling bolt, a nut and washers.
Disconnect a returnable spring and remove a brake pedal.
Examine elements on existence of wear of plugs, a bend or damage of a pedal, wear or deterioration in a condition of an overlay of a pedal, deformation of a coupling bolt and damage or weakening of a returnable spring.
Before installation grease contact surfaces of a coupling bolt, plugs and a pin with a head and an opening under the forelock lubricant of white color on the basis of lithium.
Installation is carried out to the sequences, the return to removal
After installation adjust the provision of a pedal of a brake and a free wheeling as follows.
Measure height of installation of a pedal of a brake which has to be in limits of 21,41-21,51 mm.
Fig. 10.19. Provisions of a pedal of a brake: and – height of installation of a pedal; b – free wheeling of a pedal; with – pedal distance from a floor; 1 – switch of stoplights; 2 – lock-nut of the switch of stoplights; 3 – pusher; 4 – pusher lock-nut
If it is necessary to carry out adjustment, disconnect the socket from the switch of stoplights, weaken a lock-nut of the switch and turn the switch case so that height of installation of a pedal (fig. 10.19) corresponded to demanded. Tighten a lock-nut and connect the socket to the switch.
Several times press a brake pedal at the switched-off engine for removal of depression in the vacuum amplifier of brakes, then check a free wheeling of a pedal of a brake which has to be in limits of 71,12-88,9 mm. In case of need adjustments weaken a lock-nut and turn a pusher. Tighten a lock-nut at achievement of size of the required free wheeling.
At the switched-off engine as much as possible press a pedal and measure distance between a pedal and a floor. At load of 53 kgfs the distance has to be at least 11,5 cm. If the distance is less, at first remove air from hydraulic system of brakes, then check a condition of back brake shoes of drum brakes and the automatic regulator. Make sure that brake hoses are not inflated under pressure.