|
3-14-osmotr-komponentov-podveski-i-rulevogo-privoda-proverka-sostoyaniya.html
3.14. Survey of components of a suspension bracket and steering drive, check of a condition of protective covers of power shafts
|
|
The condition of components of a suspension bracket and steering drive should be made regularly as their wear or damage can be at the bottom of reduction of service life of tires, conduct to decrease in controllability of the car and fuel consumption increase. |
Check of a condition of shock-absorbers
|
|
- Park the car on an equal horizontal platform, whenever possible with a firm covering. Firmly cock the parking brake and check pressure of a rating of tires.
- Press down one of car corners. At a corner otpuskaniye the body should come back to a starting position, making no more than one-two fluctuations.
- Body rocking with high degree of probability testifies to wear or weakening of the corresponding shock-absorber.
- Repeat procedure, serially passing to the remained corners of the car.
- To Poddomkratta the car also establish it on props (see an illustration
the Scheme of an institution of props for car fixing in the lifted situation).
|
- Attentively examine shock-absorbers on existence of signs of leakages of liquid. Existence of a thin oil film should not cause concern. Without fail make sure that a source of leak is the shock-absorber, in case of need make replacement of shock-absorbers in a set (forward and back).
- Check reliability of fastening of shock-absorbers on the support. In case of detection of defects replace shock-absorbers (also in a set).
|
|
|
Check of a condition of components of a suspension bracket and steering drive
The design of a suspension bracket and steering drive of Infiniti QX4 cars is presented in Head the Suspension bracket and a steering.
|
|
- Visually check components of a suspension bracket and a steering drive on existence of deformations and mechanical damages. Estimate a condition of sealing cuffs, protective covers and rezinometallichesky plugs — try not to pass signs of development of leaks.
|
- Check a condition of protective covers of a case of the steering mechanism.
|
|
- Check a condition of boots of sharnirny tips of steering drafts.
|
|
- Check a condition of boots of spherical support.
|
|
- Clear of dirt traces the bottom surface of a rotary fist, ask the assistant to grasp bottom edge of a wheel and to pull it in the cross-section direction. Try to estimate visually люфт in spherical support of connection of a fist with a suspension bracket control lever. At existence люфта the worn-out hinge is subject to replacement.
|
- Grasp forward and back edges of a wheel, then press on a first line and pull on itself back. In case of identification люфта in joints of components of a steering drive check a condition of tips of steering drafts. Wear of external tips can be revealed visually, internal — to the touch through a protective cover of the steering mechanism (when rocking wheel). Pass to other board of the car and repeat procedure, having pulled an opposite wheel.
|
|
- Having lowered the car on the earth, estimate size люфта a steering wheel. From under the car visually estimate inertness of operation of a steering drive at rotation of a steering wheel (the help of the assistant is required).
|
|
Check люфта steering
|
|
- Establish a steering wheel in average situation.
- Povrashchayte a steering wheel in both parties, watching thus forward wheels. The steering wheel can have maximum люфт 25 mm.
- At excessive люфте a steering wheel it is necessary to check a condition of drafts of a steering drive, the steering mechanism and to estimate size люфта bearings of a forward suspension bracket.
- Strongly move steering drafts a hand. Spherical hinges should not have люфта. In case of need replace the corresponding components.
|
|
Check of a condition of wheel bearings
|
|
- Pull a forward wheel both hands at the top and bottom edges — existence a little appreciable люфта testifies to weakening / damage of the wheel bearing or suspension bracket components. Ask the assistant to squeeze out firmly a pedal of a foot brake and repeat check — if люфт will disappear, or it will be reduced to a minimum level, therefore, it is necessary to be engaged in the bearing, otherwise check a condition of knots of a joint of components of a suspension bracket.
- Grasp forward and back edges of a wheel and repeat the check described above — if when squeezing a brake pedal люфт disappears, it is necessary to tighten or replace the stupichny bearing, otherwise check a condition of components of a steering drive.
|
|
Check of a condition of protective covers of power shafts
Established since both ends of each of power shafts the goffered rubber covers are urged to protect hinges of equal angular speeds (CV JOINTS) from the destructions connected with hit of dirt in them. Oil and greasing hit on a surface of covers can lead to their premature destruction. It is expedient to wash out from time to time covers solution of soap water. In view of a constant flexure at turns of wheels, covers of external CV JOINTS wear out quicker and should be checked more often and more regularly.
|
|
- Attentively check covers on existence of cuts, cracks and other damages, estimate reliability of fixing them bandage tapes. In case of detection of defects, or traces of leakages of greasing the damaged cover is subject to replacement.
|
|
|
|
|
