Toyota PAB4-Toyota RAV4
1. Operation of the car
2. Maintenance
3. Engines
4. Cooling systems and conditioning
5. Fuel system and system of production of the fulfilled gases
6. System of ignition
7. The control system and decrease in toxicity of the fulfilled gases
8. Coupling
9. Transmission
10. Driveshaft and shaft of the drive of driving wheels
11. Brake system
   General information
   Specifications
   Anti-blocking system of brakes (ABS)
   Replacement of front brake shoes
   Replacement of a support of a forward brake
   Check and replacement of brake disks
   Replacement of back brake shoes
   Replacement of the working brake cylinder
   Replacement of the main brake cylinder
   Replacement of sealing rings of a tank of the brake system
   Replacement of brake tubes and hoses
   Pumping of the hydraulic drive of brakes
   Check and replacement of the vacuum amplifier of brakes
   Adjustment of the parking brake
   Replacement of cables of the parking brake
   Adjustment of provision of a pedal of a brake
   Check and replacement of the switch of a stoplight
12. Suspension bracket
13. Steering and running gear
14. Body
15. Electric equipment
Schemes of electric equipment


Toyota RAV4>> Brake system>> Replacement of back brake shoes
       PREVENTIONS
Surely replace all blocks on one axis of the car even if only one block is worn-out. If brake shoes are repeatedly established, before removal mark them.
During the work of brake shoes dust which contains asbestos, unhealthy therefore when cleaning brake shoes do not use compressed air is formed and do not inhale dust.
For cleaning of brake mechanisms use only a special cleaner of brakes.

Every time when replacing brake shoes replace returnable and lower coupling springs as they constantly are exposed to heating and cooling during the work of brakes therefore can lose elasticity and not completely take away brake shoes from the brake drum.
Not to mix a detail of the left and right back brake mechanisms, you make replacement of brake shoes at first on the one hand, then with another.

Fig. 11.23. Details of the drum back brake mechanism: 1 – protective cover; 2 – piston; 3 – cuff; 4 – pumping union; 5 – working brake cylinder; 6 – spring; 7 – cuff; 8 – piston; 9 – protective cover; 10 – adjusting level; 11 – back brake shoe; 12 – lever of the parking brake; 13 – With-shaped clip; 14 – E-shaped lock ring; 15 – lever of automatic adjustment; 16 – spring of the lever of automatic adjustment; 17 – spring of fixing of a block; 18 – elements of fixing of a brake shoe; 19 – lower coupling spring; 20 – returnable spring; 21 – front brake shoe


The device of the back drum brake mechanism is shown in fig. 11.23 .
Block forward wheels an emphasis.
Weaken nuts of fastening of a back wheel. Lift a back part of the car and establish it on support.
Release the lever of the parking brake.
Remove a back wheel.
Marker or paint note mutual position of the brake drum and a nave that at installation of the brake drum balancing was not broken.

Fig. 11.24. Reduction of length of an adjusting level for withdrawal of brake shoes from the brake drum


Remove a cap from a reverse side of the protection cover of a back brake and through the opened opening the screw-driver and a hook rotate a cogwheel of an adjusting level for reduction of length of an adjusting level therefore brake shoes will depart from the brake drum ( fig. 11.24 ). Remove the brake drum.
Clear brake shoes with use of special liquid and dry up them.

Fig. 11.25. Removal of a returnable spring from a front brake shoe


Edge of the screw-driver remove a returnable spring from a front brake shoe ( fig. 11.25 ).

Fig. 11.26. Removal of a plate of a spring of fixing of a front brake shoe


Remove a plate of a spring of fixing of a front brake shoe, having pressed a plate and having turned it on 90 ° ( fig. 11.26 ).
Remove a front brake shoe and disconnect from it the lower returnable spring.
Remove a plate of a spring of fixing of a back brake shoe, having pressed a plate and having turned it on 90 °.

Fig. 11.27. A detachment of a cable of the parking brake from the lever on a back brake shoe


Disconnect a cable of the emergency brake from the lever on a back brake shoe ( fig. 11.27 ).
Remove a back brake shoe together with an adjusting level.

Fig. 11.28. Removal of a returnable spring from a back brake shoe


Disconnect a returnable spring from a back brake shoe and remove it and an adjusting level ( fig. 11.28 ).

Fig. 11.29. A detachment of a spring of the lever of automatic adjustment from a back brake shoe


Disconnect a spring of the lever of automatic adjustment from a back brake shoe ( fig. 11.29 ).
Remove an adjusting level from a back brake shoe.

Fig. 11.30. Removal of the With-shaped clip of fastening of the lever of automatic adjustment to a back brake shoe


Remove the With-shaped clip and separate the lever of automatic adjustment from a back brake shoe ( fig. 11.30 ).

Fig. 11.31. Removal of a lock ring of fastening of the lever of the parking brake to a back brake shoe


Remove a lock ring and separate the lever of the parking brake from a back brake shoe ( fig. 11.31 ).

Fig. 11.32. Knocking-out of a pin from an old back brake shoe


Beat out a pin from an old back brake shoe and establish it on a new block ( fig. 11.32 ).
Install the lever of the parking brake on a pin of a back brake shoe and fix it by a new E-shaped lock ring.
Install the lever of automatic adjustment on a pin of a back brake shoe and fix it by a new With-shaped lock ring.
Establish a spring of the lever of automatic adjustment.

Fig. 11.33. Installation of an adjusting level on a back brake shoe


Establish an adjusting level on a back brake shoe, then hook on a returnable spring for a block opening ( fig. 11.33 ).
Apply a thin film of high-temperature lubricant on the protection cover of a back brake in places of its contact with brake shoes.
Install a cable of the emergency brake on the lever of the emergency brake.
Establish a back brake shoe into place, pass a pin through a block, establish a spring and fix a spring by a plate, having pressed a plate and having turned it on 90 °.
Establish the lower returnable spring on blocks, then establish a front brake shoe into place, pass a pin through a block, establish a spring and fix a spring by a plate, having pressed a plate and having turned it on 90 °.
Fix the top returnable spring on a front brake shoe.
Being careful, clear the internal surface of the brake drum of brake dust and dirt. Clear the external surface of the brake drum and check for obvious signs of wear or damages, existence of cracks around openings under bolts of fastening of a wheel. If necessary replace a drum. Measure the internal diameter of the brake drum. Value of the most admissible internal diameter of the brake drum is caused on an internal flange of a drum.
Install the brake drum on a nave of a back wheel. The screw-driver inserted through an opening from a reverse side of the protection cover of a back brake rotate a cogwheel of an adjusting level until brake shoes slow down the brake drum, then turn in the opposite direction a cogwheel on so many that the brake drum was rotated freely. A cap close an opening in the protection cover of a back brake.
Establish a wheel and fix it by nuts.
Lower the car.
Several times tighten the lever of the parking brake to adjust the provision of back brake shoes.