Opel Frontera

since 1992 of release

Repair and car operation



Fronter's Opel
+ Opel Frontera brand Cars
+ Current leaving and service
+ Engine
+ cooling and heating Systems
+ Power supply system and release
+ engine Electric equipment
+ Coupling
+ Manual box of gear shifting
+ Driveshafts, main transfer
- Brake system
   Brake mechanisms of forward wheels
   Brake mechanism of back wheels
   Disk brakes of back wheels
   Main brake cylinder
   Air removal from brake system
   Vacuum amplifier of a brake
   Parking brake
   Pressure regulator
   Brake hoses of forward and back brake mechanisms
   Anti-blocking system (ABS)
+ Suspension bracket and steering
+ Body
+ Onboard electric equipment
+ Governing bodies and operation
+ electric equipment Schemes



Brake mechanisms of forward wheels

GENERAL INFORMATION

REPLACEMENT OF BRAKE SHOES

As it was already mentioned, the new generation of Frontera is equipped with various disk brakes. However it is not reflected in technology of removal and installation of brake shoes.
Brake shoes should be replaced in a set on both wheels. It is impossible to replace blocks only on the one hand, if, for example, blocks with the second in a good condition. Non-uniform braking can be result of such replacement.
The material of brake shoes can contain asbestos which represents harm for health of the person. Now producers replace asbestsoderzhashchy materials with others, less harmful. However the owner can not know, from what material blocks of its car are executed. Therefore do not blow off the compressed air a brake dust. Do not inhale a brake dust. Do not apply to cleaning of details of brake system the liquids based on gasoline - they can lead to swelling of rubber details of system. It is necessary to apply alcohol or special liquids to this purpose.

Brake shoes act in film as follows:

PERFORMANCE ORDER
1. Check liquid level in a tank of the main brake cylinder. If level is higher established, liquid is necessary for sucking away for an exception of possibility of its transfusion.
2. Turn out a bolt from the bottom party of the cylinder, as shown, and take out it from the inside.
3. Reject up the cylinder case.
4. Remove both brake shoes on each side a brake disk. Washers and latches from below and from above are thus released.
5. Adhere a wire a support in the lifted situation.
6. Blow the compressed air or wipe a rag directing planes and the interfaced surfaces in the case. Thus it is impossible to apply mineral solvents or the tool with sharp edges.
7. Check reliability of a protective cap and a lock ring in a support. The damaged caps replace.

At acquisition of a repair kit of brake shoes it is necessary to find out, whether they correspond to the amplifier of a brake regarding a material of brake shoes. Therefore at the order of blocks it is necessary to specify number of the chassis and year of release of the car.

PERFORMANCE ORDER

1. At installation of brake shoes press the piston of the wheel cylinder into an opening, as shown. Thus it is necessary to watch level of brake liquid in a tank.
2. Establish washers and latches on a bracket.
3. Put on brake shoes on the right and at the left.
4. The wear index on the bottom party of blocks should be turned inside.
5. Lower a bracket, as shown.
6. Insert from below directing finger and fix.

7. Depending on a year of release there are constructive differences:

On cars to the middle of 1995 of release the moment of an inhaling of directing fingers makes 32 Nanometers.
On cars of later release the moment of an inhaling makes 74 Nanometers.
8. Fill in liquid in a tank of the main brake cylinder to the established level.
9. Press several times a brake pedal that blocks were established rather brake disk.

For extra earnings of brake shoes some time is required. It is recommended not to press sharply during this time a pedal when braking.  

REMOVAL, REPAIR AND INSTALLATION OF BRAKE SUPPORTS

Removal

Before removal and repair of a support it is necessary to be convinced available a repair kit.
PERFORMANCE ORDER
1. Lift and establish on supports a forward part of the car.
2. Unscrew nuts and remove wheels.
3. Remove brake shoes as it is described in the previous subsection.
4. To expel a liquid effluence from system, it is necessary to close a tank. Best of all for this purpose unscrew a stopper of a tank and close an opening polyethylene. After that the stopper is wrapped again.
5. On the back party of a support unscrew a hollow bolt and remove a brake hose.
6. At the left and on the right there are sealing washers which are necessary for removing. A liquid quantity thus follows. Stop up the hose end (for example, wrap up a sticky tape).
7. Unscrew two bolts and remove a support.
8. One of bolts is shown on an illustration. From the top party there is the second bolt.
9. If it is necessary, unscrew two bolts of fastening of a rotary fist. Bolts are shown on an illustration.

 Details of a bracket of a forward brake of the car to the middle of 1995 of release
1-the sliding plug
2-protective cover
3-protective cover
4-the union for air removal
5-lock ring
6-dustproof ring
7-piston
8-cuff
9-cylinder

Details of a bracket of a forward brake of the car from the middle of 1995 of release
1-protective cover
2-the union for air removal
3-lock ring
4-dustproof ring
5-piston
6-cuff
7-support


Repair

If at replacement of brake shoes liquid traces around boots of the wheel cylinder are found, it is possible to replace brake cuffs.

PERFORMANCE ORDER
1. Carefully clear a support and clamp it in a vice.
2. Carefully remove a screw-driver protective caps from the end of the piston and from a support. Watch to damaging any details.
3. Insert into a support opening wooden whetstone (in front of the piston) and bring the compressed air to a place of accession of a hose.
4. Squeeze out the piston from the cylinder. For this purpose it is possible to use also the pump with a foot drive.
5. Take out not sharp subject (wooden or plastic) a brake cuff from the cylinder, as shown.
6. Details of a support of a forward wheel of the car from the middle of 1995 of year of release are shown on an illustration of the Detail of a bracket of a forward brake of the car from the middle of 1995 of release. At the car of earlier release in rubber covers plugs are inserted. At new models the rubber covers serving only as boots are established.
7. All details carefully wash out in brake liquid or alcohol.
8. If the internal surface of the cylinder has traces of strong wear, best of all replace a support in a set.
9. The repair kit should be used completely, including all details.
10. At first into a flute insert a cuff and carefully press.
11. A cuff grease with greasing for brake system or brake liquid.
12. Insert into a piston flute a boot.
13. Moisten the piston in brake liquid and insert it into the cylinder.
14. After the piston partially will enter into an opening, establish a boot in a support. Watch to damaging a boot.
15. Advance the piston more deeply in the cylinder so that it occupied the correct situation. Watch that correctly there was a protective cap.
16. If it is necessary, replace protective covers with plugs or without them depending on a year of release. Protective covers are established with brake greasing.

Repair of the cylinder of a support

PERFORMANCE ORDER
1. After dismantling of the cylinder of a cuff always replace.
2. It is not necessary to establish the cylinders having wear tracks, teases and corrosion of a working surface.
3. Apply only brake liquid of the established brand. Do not apply liquid, long time not used.
4. Pistons and cuffs are greased either pure brake liquid or brake greasing.

At supports of a considered design the case of the cylinder moves on two sliding plugs. In the case there is a piston. In spite of the fact that the design of both considered supports has difference, removal, repair and their installation are carried out equally. Available differences are visible from the given illustrations.

Support installation

In the presence of outer defects of sealing rings of a brake hose, it is necessary to replace them.

PERFORMANCE ORDER
1. If directing a support it was removed, fix it on a rotary fist and tighten both shown bolts of fastening the moment of 212 Nanometers.
2. Fix a hose on a support, having tracked that it occupied the correct situation. Thus one directing finger should be inserted into a support.
3. Tighten a hollow bolt the moment of 35 Nanometers.
4. Unions of removal of air tighten the moment of 8 Nanometers and are closed by caps.
5. Establish brake shoes as it is described above.
6. Remove polyethylene from a tank stopper.
7. Check liquid level. If necessary add and close a tank a stopper.
8. Other works are carried out in sequence, return dismantling.
9. Remove air from system as it is described below.
10. In summary check system on tightness.
11. After completion of all works check action of brake system during car movement.

BRAKE DISKS

Before removal of a brake disk it is necessary for checking on palpation since the disk can be deformed. The brake disk fastens a bolt with Torx head. However the bolt completely does not press a disk to a wheel nave. For providing a full prileganiye one of bolts of fastening of a wheel is rolled with the remote plug in a nave opposite to a bolt of fastening of a brake disk and clamps a nave. Thus, uniform fastening on the right and at the left is reached.

PERFORMANCE ORDER
1. Establish the indicator with the holder on a bracket of a brake and rest a measuring tip approximately against the middle of a frictional surface of a disk, as shown.
2. Slowly turn a brake disk and measure palpation. It should not exceed 0.13 mm. Palpation brake disk not necessarily completely is a consequence only of defect of the disk since partially to it palpation owing to gaps in the wheel bearing is added.
3. At rotation of a brake disk it is necessary to check its brake surface on existence of cracks, задиров, etc. In the presence of the specified defects, as a rule, it is necessary to replace a brake disk.

Brake disks can be ground for working capacity restoration. The minimum admissible thickness of a disk is specified in Specifications. Thus it is necessary to watch preservation of planeness of a disk.

The brake disk acts in film as follows:

PERFORMANCE ORDER
1. If the wheel is already removed, as it was accepted above, turn out a bolt of fastening of the wheel, used at palpation check.
2. Remove a brake disk as it was described above.
3. Adhere a support a wire to the chassis.
4. Turn out both shown a bolt and separate directing from a brake disk.
5. Turn out a special key a fastening bolt in a face surface of a brake disk. The bolt has Torx head.
6. Remove a brake disk from a wheel nave. If necessary for this purpose it is possible to use a rubber hammer.
7. Before installation of a brake disk smooth out a small nazhdachny skin interfaced surfaces of a disk and a wheel nave. If the new brake disk is established, it is necessary for clearing of greasing.
8. Establish a brake disk and обстучите its rubber hammer.
9. Screw and tighten a fastening bolt.
10. Check a brake disk on palpation as it is described above. Unexpectedly appeared palpation can be a consequence of hit of extraneous particles between the planes of interface of a disk and a nave. Then again disassemble connection, clear and collect.
11. Establish directing blocks and tighten bolts of its fastening the moment of 212 Nanometers.
12. Establish brake shoes as it is described above.

13. Lower the car and tighten bolts of fastening of wheels the moment of 110 Nanometers.

Prevention
Rims from easy alloys fasten the moment of 120 Nanometers.


Instruction

The thickness of brake disks can be measured without their removal. It becomes a calliper. Keep in mind distinction in executions.


REPLACEMENT OF THE CASING OF THE BRAKE DISK

In case of casing deformation it can be replaced. For this purpose it is necessary to remove a support, a brake disk and a wheel nave. After that it is possible to unscrew three bolts of fastening and to remove a casing. Bolts of fastening of a new casing tighten the moment of 13 Nanometers.