11.8. Check of a state, removal and installation of a brake disk

Check of a state

Cars with engines with power up to 60 h.p. are equipped in front with integral brake disks. Cars with more powerful engines are equipped with the ventilated disk brakes.


 PERFORMANCE ORDER

  1. Weaken bolts of fastening of wheels, the car and establish to a poddomkratta it on props. Remove the corresponding wheel, then return couple of wheel bolts for the purpose of fixing of a brake disk (if the screw of fastening of a disk is not turned out yet, need for installation of bolts disappears).
  2. Remove a brake support (see the Section Removal, recovery repair and installation of supports of disk brake mechanisms of forward wheels) and tie up it aside a wire to a suspension bracket element, without disconnecting a brake hose.
  3. Make visual check of a condition of a working surface of a disk. Easy defects can be eliminated by means of a fine-grained emery paper. For removal of deep furrows the disk should be subjected to a pro-point. Remember that the disk has to be examined from both of its parties.
  4. If during braking pulsations of a pedal of a foot brake were noticed, it is necessary to estimate the size of a side beating of a brake disk. Fix the dial measuring instrument of plunger type at distance about 13 mm from the outer edge of a disk. Nullify the device and begin to rotate a disk. The result of measurement should not go beyond stipulated in Specifications (The head the Brake system) admissible range, otherwise the disk needs to be given to a pro-point.

Measurement of size of a side beating of a brake disk

Authors of the present manual recommend to make a pro-point of disks regardless of their state for the purpose of removal from any working surfaces of defects. As a last resort it is possible to be limited to processing of a disk a fine-grained emery paper.

  1. At a pro-point of a disk it is necessary to pay special attention to observance of requirements of Specifications in the Head the Brake system to its minimum admissible thickness. On a face surface of a disk the corresponding marking is provided. Measurement of thickness of a disk is performed by means of a micrometer.

Measurement of thickness of a brake disk

Removal

 PERFORMANCE ORDER

  1. Turn out the wheel bolts established when checking a disk.
  2. Remove a forward support (see the Section Removal, recovery repair and installation of supports of disk brake mechanisms of forward wheels) with brake shoes and an arm of fastening and take him aside, having tied up to a rack.

Removal of a support

  1. Turn out the fixing screw and remove a brake disk from a wheel nave.

Otdavaniye of the screw of fastening of a brake disk

Installation

 PERFORMANCE ORDER

  1. Installation is made as it should be, the return to an order of dismantle of components. Before installation make sure of absoluteness of purity and dryness of the interfaced surfaces of a disk and a nave. Slightly grease a carving part of the screw of fastening of a disk with the fixing sealant.
  2. In conclusion establish brake shoes and a support of the brake mechanism (see the Sections Replacement of Blocks of Disk Brake Mechanisms of Forward Wheels and Removal, recovery repair and installation of supports of disk brake mechanisms of forward wheels).