Fig. 10.18. Nave of a back wheel and brake mechanism of drum type: 1 – an axis of a back wheel of the car which is not equipped with ABS; 2, 15, 16 – sealing rings; 3 – brake mechanism of drum type; 4 – washer; 5 – bolt; 6 – the fixing forelock; 7 – protective cap; 8 – blocking ring; 9 – nut; 10 – persistent washer; 11 – external bearing; 12 – brake drum; 13 – ABS sensor rotor; 14 – internal bearing; 17 – an axis of a back wheel of the car equipped with ABS

Hug bearings 11 and 14 of a back wheel are installed in the back brake reel / nave, or a back brake disk / nave ( fig. 10.18 or 12.17 ).

Fig. 12.17. Support of the back brake mechanism: 1 – the directing finger; 2 – protective cover; 3 – holder of a support; 4 – dustproof cover; 5 – piston; 6 – cuff; 7 – support; 8 – самоконтрящиеся bolts; 9 – pumping valve; 10 – cap

You make replacement in the following order:

– You will hang out and record a back part of the car on basic racks;

– remove back wheels and release the emergency brake;

Fig. 10.19. Removal of a cover from the central part of the brake drum

– using VW637/2 adaptation or the screw-driver, uncover the central part of the brake drum or a disk ( fig. 10.19 );

– take the fixing forelock and remove a blocking ring;

– turn off a nut and remove a persistent washer;

– on back brakes of drum type turn the brake drum so that openings for bolts of fastening of a wheel settled down at an angle 45 ° from the vertical plane;

– release brake shoes for what insert the screw-driver through a forward top opening for a bolt of fastening of a wheel and move a wedge up;

– on disk back brakes remove a brake support and, using a soft wire, suspend it to a rack;

– remove the brake drum or a disk. If necessary use a universal stripper;

– wipe the internal bearing and a sealing ring;

– take an internal ring of the bearing from a nave;

– a copper drift beat out external rings of the bearing from a nave. In order to avoid a distortion of the bearing establish a drift evenly around;

– clear seats for bearings in a nave and on a pin;

Fig. 10.20. Installation of external rings of the bearing VW-432 adaptation

– using VW-432 adaptation, press external rings of bearings in the brake drum or a brake disk ( fig. 10.20 ). In the absence of adaptation press external rings of bearings, using a tubular mandrel;

– apply lithium lubricant in a cavity of the internal bearing and install it on a pin;

– apply lubricant on working edges of a new sealing ring and establish it in a nave;

– fill a nave with lithium lubricant and establish on a pin;

– install the external bearing and a persistent washer then wrap manually a nut of fastening of a nave;

– turn a nave for installation of bearings;

Fig. 10.21. Check of a side play of bearings

– tighten a nut to a contact of a persistent washer. The side play of the bearing is adjusted correctly if the persistent washer can be moved with a screw-driver edge in different directions ( fig. 10.21 );

– establish a blocking ring and insert the new forelock;

– fill a cover of the central part of a nave with lubricant and establish a cover into place;

PREVENTION In order to avoid contact of bearings with water the cover should not be crumpled or deformed.

– further installation is made in the sequence, the return to removal.