Pic. 2.19. Place (A) in the area of the front wheel for installing a safety support
If it is necessary to change a wheel or carry out any work in the area of the wheel arches (maintenance of brake devices, suspension elements, etc.), as a rule, regular (transportable) jack. In the case of long-term work, be sure to use safety support supports, which are installed under the reinforced places under the threshold of the body (pic. 2.19) around both the front and rear wheels.
The bearing base of the car body is protected by special compounds that provide a guarantee against corrosion.
Never use equipment without rubber pads; as a last resort, install a wooden plate to completely
exclude direct metal-to-metal contact, as a result of which the factory anti-corrosion coating may be damaged.
Never raise the vehicle by placing the jack arm under the front suspension arms or under the rear suspension beam.
After removing heavy knots (e.g. power unit, rear axle, fuel tank, etc.) the weight of the vehicle is significantly reduced and there is a risk of the vehicle tipping over if it is mounted on a two-post lift. This is even more dangerous if the car is raised high. Therefore, whenever possible, it is recommended to use a four-post lift in these cases.
Pic. 2.20. Installation of lift supports: A - in front of the car; B - in the back of the car
The installation locations of the lift supports are shown in fig. 2.20.
Change the wheel in the following order:
- disembark passengers from the car;
- park the vehicle on firm ground. If necessary, place a reliable support under the base of the jack - board cuttings, a sheet of metal, etc. Stop your vehicle as far away from traffic as possible (roadside, site);
- turn on the emergency light alarm;
- install an emergency stop sign;
- set the front wheels to the straight ahead position;
- lock the steering by removing the ignition key;
- turn on the parking brake;
- engage first gear or reverse gear. On a vehicle with an automatic transmission, place the selector lever in the position «R»;
- install the wheel chock (stone or other hard object) on the side diagonally to the wheel to be replaced;
- remove the spare wheel, jack and wheel wrench from the trunk;
- using the wrench from the tool kit, remove the decorative cap from the damaged wheel;
- unscrew the wheel bolts half a turn;
- install the jack without inclination under the threshold amplifier so that its support is located on a hard surface;
- jack up the car so that the wheel to be replaced is off the road surface;
- unscrew the wheel bolts and remove the wheel;
- clean and dry the threaded holes for the wheel bolts;
Attention! Bolts must be dry and clean before installation. Do not lubricate bolts and hole threads.
- install the spare wheel and slightly tighten the bolts with a wheelbrace;
- lower the car with a jack and remove the jack;
- finally tighten the bolts crosswise to 90 Nm;
- install the wheel cover, remove the wheel chock, jack and wheel wrench;
- Check the tire pressure with a pressure gauge and adjust if necessary.