6.1. Front suspension assembly: A - control size; 1 - telescopic stand; 2 - nut; 3 - eccentric bolt; 4 - nut; 5 – rotary fist; 6 - front wheel drive shaft; 7 - protective cover of the hinge; 8 - outer hinge of the shaft; 9 - lower arm; 10 - ball bearing; 11 - decorative disc (cap) wheels; 12 - hub; 13 - brake disc; 14 - protective cover; 15 - rotary lever; 16 - lower support cup; 17 - suspension spring; 18 – a protective cover of a telescopic rack; 19 - compression stroke buffer; 20 - upper support cup; 21 - bearing of the upper support; 22 - the upper support of the rack.
The main element of the suspension is a telescopic hydraulic shock absorber strut 1 (pic. 6.1), the lower part of which is connected to the steering knuckle 5 with two bolts. The upper bolt 3, passing through the oval hole of the rack bracket, has an eccentric belt and a washer. Turning the top bolt changes the camber of the front wheel.
A twisted coil spring 17, a polyurethane foam buffer 19 of the compression stroke, an upper support 22 of the rack assembly with a bearing 21 are installed on the telescopic rack.
The upper support is attached with three self-locking nuts to the body mudguard strut. Due to its elasticity, the support ensures the swing of the rack during suspension strokes and dampens high-frequency vibrations. The bearing built into it allows the rack to turn along with the steered wheels.
6.2. Telescopic stand: 1 - compression valve body; 2 - disks of the compression valve; 3 - throttle disk of the compression valve; 4 - compression valve plate; 5 - compression valve spring; 6 - clip of the compression valve; 7 - return valve nut; 8 - recoil valve spring; 9 – recoil valve plate; 10 – recoil valve disk; 11 - throttle disc of the recoil valve; 12 - piston; 13 - bypass valve plate; 14 - bypass valve spring; 15 - plunger; 16 - plunger spring; 17 - rod guide bushing with a fluoroplastic layer; 18 - holder of the guide sleeve; 19 – a sealing ring of the case of a rack; 20 - stem gland; 21 - stuffing box holder; 22 - gasket of the protective ring of the rod; 23 - protective ring of the rod; 24 – rack housing nut; 25 - compression buffer support; 26 - stock; 27 - spring cup; 28 - rotary lever; 29 - restrictive sleeve of the rod; 30 - rack body; 31 - cylinder; 32 - drain tube.
Details of a telescopic hydraulic shock absorber, shown in fig. 6.2
In the upper part of the cylinder, a hydraulic recoil stroke buffer is installed, consisting of a plunger 15 and a spring 16. It limits the movement of the rod during the recoil stroke.
lower part of steering knuckle 5 (see fig. 6.1) connected by a ball joint 10 with the lower suspension arm 9. Braking and traction forces are perceived by longitudinal extensions, which are connected through rubber-metal hinges to the lower levers and to the front supports of the front suspension cross member. Adjusting washers are installed at the connection points of the extension with the lever and the front support, which change the angle of the longitudinal inclination of the axis of rotation.
6.3. Steering knuckle and front wheel hub parts: 1 – a rotary fist; 2 - outer mud-reflecting ring; 3 - hub bearing; 4 - wheel hub; 5 - thrust washer; 6 - nut; 7 - retaining rings; 8 - internal dirt-reflecting ring.
In the turning knuckle (pic. 6.3) secured by retaining rings 7 is a double-row angular contact bearing of a closed type, in the inner rings of which a wheel hub 4 is installed with an interference fit. The bearing is clamped with a nut 6 on the shank of the outer hinge housing of the wheel drive and is not adjustable. All nuts for fastening the front and rear wheel hubs are the same and with right-hand threads.
The anti-roll bar is a bar, the knees of which are connected to the lower suspension arms through racks with rubber and rubber-metal hinges. Medium (torsion) part of the rod is attached to the body with brackets through rubber cushions.
Helpful Hints: When shaking a suspended front wheel, it is difficult to distinguish play in the hub bearings and in the ball joints. Ask an assistant to press the brake pedal: if you feel a play, then the ball joints are faulty. Install the protective caps of the hub bearings on any glue - this way you will avoid many problems in the future.