6.1. A forward suspension bracket

Forward suspension bracket independent, on two cross-section levers from each party, with twisted cylindrical springs, with telescopic shock-absorbers and the stabilizer of cross-section stability.

Fig. 6.1. A forward suspension bracket: 1 – a cap; 2 – a nut; 3 – the aligning plug; 4 – a wheel nave; 5 – a brake disk; 6 – an epiploon; 7 – the external bearing; 8 – a ring; 9 – the internal bearing; 10 – a spherical support; 11 – the stabilizer plug; 12 – the bottom cup of a spring; 13 – a spring of a forward suspension bracket; 14 – the bottom lever of a suspension bracket; 15 – the top cup of a spring; 16 – a spring lining; 17 – the compression buffer; 18 – a cross-beam of a forward suspension bracket; 19 – an extension; 20 – a bolt of fastening of the top lever; 21 – adjusting washers; 22 – the buffer of a course of a release; 23 – the stabilizer; 24 – the top lever; 25 – the spherical hinge; 26 – скоба; 27 – a rotary fist; 28 – the shock-absorber; 29 – a protective casing of a forward brake

Top 24 and bottom 14 (fig. 6.1) cross-section levers provide independent moving of each of forward wheels to a vertical plane (at overcoming of road obstacles).

The spherical support 10 has the same design, as the spherical hinge 25, and is connected to a rotary fist and the suspension bracket lever the same as also the hinge.

The top lever of 24 suspension brackets is connected to an arm of a cross-beam an axis attached to an arm by two bolts 20, and the bottom lever 14 is attached by a bolt-axis to a suspension bracket cross-beam.

Between an axis of the top lever and an arm the adjusting washers which change of quantity regulate disorder of wheels and a longitudinal angle of slope of an axis of turn of a wheel are established. Both levers of a suspension bracket are connected to axes through резинометаллические hinges (сайлентблоки), providing беззазорное connection of these details. Such hinge includes the rubber plug, external and internal metal plugs.

To the bottom levers are attached by bolts of a cup of springs of a forward suspension bracket.

In a rotary fist two bearings – internal 9 and external 7 in which internal rings with a tightness the wheel nave is established are established. On a nave the brake disk 5 is established. From outside a brake board the nave is condensed by an epiploon 6, and outside – a cap 1. Regulate an inhaling of bearings of a nave a nut of disposable using 2.

Springs 13 forward suspension brackets cylindrical. Shock-absorbers 28 forward suspension brackets – telescopic, bilaterial action. The top ends of shock-absorbers through rubber pillows are fixed in arms of a cross-beam of a forward suspension bracket, and bottom are attached to arms of the bottom levers.

Lateral lists of a body at passage of turns the stabilizer compensates 23 cross-section stability fixed through rubber plugs 11 on ends on the bottom levers, and in an average part – on a cover of a reducer of the forward bridge and on body longerons.

All checks and works spend from below the car established on the lift or a viewing ditch (with the hung out forward wheels).

GOOD ADVICE For convenience remove a corresponding wheel.

On rubber details of a suspension bracket are not supposed:

– Signs of ageing of rubber;

– Mechanical damages.

On резинометаллических hinges are not supposed:

– Signs of ageing, a crack, unilateral выпучивание a rubber file;

– A separation of a rubber file from armature. Defective details replace.

THE PREVENTION Special attention turn on mechanical damages (deformations, cracks, etc.) suspension bracket elements, especially levers.

1. Check up a condition of protective covers of spherical support and...	2.... Spherical hinges. If covers have damages, replace the hinge in gathering.

3. Examine rubber pillows of the top hinges and...	4.... Rubber plugs of the bottom hinges of shock-absorbers.

5. Examine резинометаллические plugs top and...	6.... Bottom levers.

7. Check up a condition of rubber plugs of the stabilizer of cross-section stability and reliability of fastening скоб the stabilizer to the bottom levers...	8.... To body longerons...

9.... To a reducer of the forward bridge.

At the increased backlash in bearings of naves of forward wheels in a certain range of speeds vibration on a steering wheel is observed. Thus non-uniformly (stains) tyres wear out, and also the resource of bearings sharply decreases. To resource decrease conducts also a backlash total absence at which hard rotation of a nave is observed.

THE NOTE The backlash in bearings of naves of forward wheels should be no more than 0,15 mm.

It be required to you: a key for bolts of wheels, a key «on 27», a hammer.

1. Establish the car on support.

GOOD ADVICE Backlash most precisely to define by means of the indicator. In the absence of the indicator shake the hung out wheel in a vertical plane. If you have felt люфт, probably, it is necessary to adjust a backlash in bearings. For definitive check of the bearing ask the assistant to press a pedal of a brake and to keep it in the pressed condition. Again shake a wheel in a vertical plane. Disappearance люфта wheels at such check confirms necessity of adjustment of a backlash for bearings.

2. Remove a corresponding wheel.

3. Remove a decorative cap, расконтрите a nut of a nave and...	4.... Keeping a nave approaching воротком from проворачивания, turn away a nut.

GOOD ADVICE At adjustment necessarily replace nuts of naves new as after adjustment the nut can occupy former position and it it will not be possible reliably законтрить as the fillet in a proper place will be already damaged previous контровкой. As a last resort at possibility use a nut from other car.

5. Screw and tighten a new nut of a nave a twisting moment 19,6 Н·м (2 кгс·м), simultaneously turning a nave approximately on 90 ° in both directions 2–3 times for self-installation of bearings.	6. Ослабьте an adjusting nut and again tighten its moment 6,8 Н·м (0,7 кгс·м).

7. Release an adjusting nut approximately on 25 °.

8. Stop a nave nut (having hushed up a nut fillet in two grooves on a pin of the case of the external hinge of a drive of a forward wheel).

9. Establish the removed details in an order, the return to removal.

GOOD ADVICE After backlash adjustment in nave bearings be convinced of ease of rotation of a wheel. Definitive check of correctness of adjustment spend, having estimated degree of heating of naves after run of the car about 1 km without use of brakes.

Replace greasing in bearings with the periodicity resulted in the service book. If it is not enough greasing or it is polluted, bearings will quickly fail.

It be required to you: keys «on 13» (two), динамометрический a key, a key for nuts of wheels, flat-nose pliers, a screw-driver, a hammer, pure greasing Litol-24, capacity for washing of details.

1. Remove a wheel.

2. Remove brake pad (Replacement brake колодок the forward brake mechanism »see«).

3. Remove a support (Removal and installation of a support of the forward brake mechanism »see«), without disconnecting a hose of a hydrodrive of brakes, and, having taken a support aside, fix it (for example, a wire) so that the support did not hang on a hydrodrive hose.	4. Take out from an arm the rubber holder together with a hose.

5. Расшплинтуйте a nut of a finger of the external hinge of lateral draught, turn away a nut and...	6.... Having established a stripper, выпрессуйте a finger of the hinge from a lug of the rotary lever.

7. Turn on on three nuts of bolts of fastening of the spherical hinge and...	8.... A spherical support to levers.

9. Turn away a nave nut (section 5 "Transmission", «Drives of forward wheels» see).

10. Take out bolts and remove a rotary fist in gathering with hinges.	11. Using approaching the mandrel, выпрессуйте a nave from internal rings of bearings.

12. Using a screw-driver, take from a nave an epiploon.

THE NOTE After выпрессовки the epiploon is unsuitable to the further application. Replace its new.

13. Take out a remote ring and an internal ring of the bearing.

THE PREVENTION Check up reliability of landing of external rings of bearings in the case of a rotary fist. Rings should not be turned from effort of a hand.

14. Wash out all details kerosene.

15. Fill with greasing an internal cavity of a rotary fist, put greasing on external and internal rings of bearings.

16. Establish in a rotary fist an internal ring of the bearing and a remote ring.

17. Запрессуйте an epiploon in a nest of a rotary fist.

GOOD ADVICE In quality send it is possible to use an old epiploon.

18. Establish a rotary fist in an order, the return to removal.

19. Adjust a backlash in nave bearings (Check and backlash adjustment in bearings of naves of forward wheels »see«).

20. With the same way replace greasing and adjust a backlash in nave bearings on the other hand the car.

External signs of necessity of removal of bearings for дефектовки are:

– The raised noise at wheel rotation;

– The impossibility adjustment to achieve a nominal backlash in bearings.

It be required to you: a key for nuts of wheels, a hammer, a screw-driver, keys «on 13», «on 17», динамометрический a key, an insertion (small beards), оправка for запрессовки an epiploon, kerosene, greasing Litol-24, capacity for washing of details.

GOOD ADVICE To work more conveniently on the lift. Work on the car lifted by a jack on support, with observance of necessary safety measures is supposed.

1. Remove a rotary fist, take out from it a nave, an epiploon, a remote ring and internal rings of bearings (greasing Replacement in bearings of a nave of a forward wheel »see«).

2. Wash out kerosene all details.

PREVENTIONS Examine racetracks of internal and external rings of bearings, and also working surfaces of rollers. Питтинг, visible deterioration of separators, rollers and rings, and also bowls and сколы on rollers and rings are not supposed. Defective bearings replace necessarily together with external rings. External and internal bearings change simultaneously.

3. With the help a small beard easy blows of a hammer on perimetre of an external ring выпрессуйте a ring from a fist.