Opel Astra, Zafira

since 1998 of release

Repair and car operation



Opel Astra
+ Opel Astra and Zafira Cars
+ Operation manual
+ Routine maintenance
+ Engine
+ Systems of cooling, heating
+ Power supply system and release
+ engine Electric equipment
+ Manual transmission
+ Automatic transmission
+ Coupling and power shafts
- Brake system
   Specifications
   System of anti-blocking of brakes (ABS) and antiprobuksovochny system (TCS) - the general information and codes of malfunctions
   Pumping of brake system
   Check of a condition and replacement of brake lines and hoses
   Replacement of blocks of disk brake mechanisms of forward wheels
   Replacement of blocks of disk brake mechanisms of back wheels
   Replacement of boots of drum-type brake mechanisms of back wheels
   Condition check, removal and installation of a brake disk
   Removal, check of a condition and installation of a brake drum
   Removal, regenerative repair and installation of supports of disk brake mechanisms of forward wheels
   Removal, regenerative repair and installation of supports of disk brake mechanisms of back wheels
   Removal, service and installation of wheel cylinders of drum-type brake mechanisms of back wheels
   Removal and installation of the main brake cylinder
   Removal and installation of a pedal of a foot brake
   Check of serviceability of functioning/tightness, removal and installation of assembly of the vacuum amplifier of brakes
   Removal, check of serviceability of functioning and installation of the return valve of the vacuum amplifier of brakes
   Removal and installation of the vacuum pump of the servo-driver of the brake amplifier (diesel models)
   Check of serviceability of functioning of the vacuum pump of the servo-driver of the brake amplifier (diesel models)
   Adjustment of a drive of the parking brake
   Removal and installation of the lever of the parking brake
   Removal and installation of cables of a drive of the parking brake
   Removal, installation and adjustment of the sensor switch of stoplights
   Removal and installation of the sensor switch of a control lamp of raising of the parking brake
   Removal and installation of the ABS and TCS components
   Removal, installation and adjustment of the valve regulator of pressure in hydraulic contours of brake mechanisms of back wheels
+ Suspension bracket and steering
+ Body
+ Onboard electric equipment




Removal, service and installation of wheel cylinders of drum-type brake mechanisms of back wheels

In case of leakages of brake liquid wheel cylinders are subject to replacement without fail. Manufacturers do not recommend to undertake attempt of carrying out regenerative repair of these knots of brake mechanisms.

Removal

 PERFORMANCE ORDER

  1. Prop up forward wheels protivootkatny boots. To Poddomkratta a car back also establish it on props.
  2. Remove a brake drum and boots (see. Removal, check of a condition and installation of a brake drum).
  3. Clear the wheel cylinder and surfaces surrounding it of dirt.
  4. Uncover the GTTs tank put under it a polyethylene film and screw on a place, - the podkladyvaniye of a film pressurizes landing of a cover and will prevent a liquid effluence at an otpuskaniye of shtutserny connection of a flexible brake hose.
  5. Remove the top coupling spring and dissolve in the parties brake boots, having liberated them from pistons.
  6. Having carefully wiped the union, disconnect the hydraulic line from a back part of the wheel cylinder. In order to avoid a rounding off шлицов the union use a special cap natural a cutting head. At a detachment do not pull for a metal tube of the brake line in order to avoid its deformation, capable it is essential to complicate connection procedure. At once закупорьте the open end of the brake line for the purpose of minimization of losses of liquid and in order to avoid hit in hydraulic system of dirt.
  7. Turn out a bolt of fastening of the wheel cylinder.
  8. Remove the wheel cylinder from a brake board and transfer it on a pure workbench.

If on frictional overlays of brake boots there are traces of hydraulic liquid, it is necessary to replace boots, and a working surface of a drum carefully to smooth out.

Service

 PERFORMANCE ORDER

  1. Carefully wipe the cylinder outside.
  1. Remove from the boot cylinder both.

    Design of the wheel cylinder of the drum-type brake mechanism of a back wheel

  1. Usually pistons are freely pushed out from the cylinder under the influence of effort developed by a spring. In case of need закупорьте a face opening of the cylinder a wooden cap вытолкните the piston by giving in the air cylinder through an entrance opening from the foot pump.
  2. Attentively study a condition of working surfaces of the cylinder and pistons. In case of detection of obvious defects replace the cylinder.

Originators of the real Management recommend to make replacement of cylinders of both brake mechanisms of back wheels at the same time.

  1. If the condition of components is recognized satisfactory, make replacement of sealing cuffs and boots, - the corresponding remnabor always can be found in shops of automobile accessories.
  2. Grease new cuffs of pistons with pure brake liquid and a finger fill them in the cylinder, in the middle having planted a spring.
  3. Lower pistons in pure brake liquid and fill them in the cylinder.
  4. Establish new boots and check freedom of a course of pistons.

Installation

 PERFORMANCE ORDER

  1. Make sure of absoluteness of purity and dryness of interfaced surfaces of the cylinder and a brake board. Dissolve boots, establish the cylinder on the regular place and connect to it the hydraulic line, - yet do not tighten a shtutserny nut.
  2. Screw fixing bolts and strongly them tighten, - now a shtutserny nut it is possible it is finally tightened. Clean enclosed under a GTTs tank cover polyethylene.
  3. Fill boots in flutes of pistons and establish into place the top coupling spring.
  4. Establish to the place of a brake drum (see. Removal, check of a condition and installation of a brake drum).
  5. Pump over brake system (see. Pumping of brake system), - is enough to pump over only that contour which cylinder acted in film.
  6. Make adjustment of a driving cable of the parking brake (see. Adjustment of a drive of the parking brake). Also establish into place a control lever cover.
  7. Before starting car operation, make sure of serviceability of functioning of brakes.