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12-12-proverka-sostoyaniya-snyatie-i-ustanovka-sborki-stoyanochnogo-tormoza.html
12.12. Condition check, removal and installation of assembly of the parking brake
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Overlays of boots of the parking brake on models with disk back brake mechanisms can be made from asbestosoderzhashchy materials. Pay attention to the Prevention at the beginning of the Section Replacement of boots of drums of brake mechanisms. At service of these components do not create a dust a friction or polishing of slips. |
The system of the parking brake should be checked regularly. Having put the car on a hill, cock the parking brake, establish neutral transfer and check, whether one parking brake can, at the released brakes, to hold the car (during check you should be in the car). However every two years, or in case of suspicion on malfunction, it is necessary to survey assembly of the parking brake.
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- Поддомкратив the car and having established it on axial support, remove back wheels.
- On models with drum-type back brake mechanisms make usual procedure of check of thickness of overlays of the brake boots, described in Head Routine maintenance of the car.
- On models with disk back brake mechanisms remove back disks as it is described in the Section Survey, removal and installation of a brake disk. Suspend support assemblies on a clothes hanger or a thick wire; do not disconnect brake lines from a support.
- At the removed disk components of the parking brake become well visible, and they can be surveyed on existence of signs of wear and damages. Usually service life of slips same, as at the car. However they can wear out, if the system of the parking brake is badly adjusted, or if the parking brake is constantly used for a car stop. There is no minimum admissible value of thickness of overlays for boots of the parking brake, but practice shows that if it less than 1.5 mm, it is necessary to replace slips. Check also springs and the mechanism of adjustment and survey a drum on existence of deep scratches or other damages.
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Removal and installation
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The procedure given below belongs only to models with disk back brake mechanisms. The system of the parking brake on models with drum-type back brake mechanisms is an integral part of assembly of the back brake mechanism (see. Section Replacement of boots of drums of brake mechanisms). |
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- Release bolts of fastening of back wheels, поддомкратьте a back of the car and reliably establish it on axial support. Remove back wheels. Remove brake disks (see. Section Survey, removal and installation of a brake disk). Work at the same time only with one party of the car that another could serve as a sample at assembly and not to mix a detail.
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- Remove a coupling spring of the bottom boot (diagonal nippers since they well grasp a spring are thus used, but it is necessary to be careful not to damage a spring).
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- Remove a coupling spring of the top boot.
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- Remove holding springs of boots.
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- Installation make upside-down. Upon termination of work it is necessary to establish the executive mechanism correctly between two boots, as is shown in a photo (the nave is removed for descriptive reasons).
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- After installation of a brake disk adjust boots of the parking brake. Temporarily get two bolts of fastening of wheels, turn a regulator and move apart boots so to block a disk, then turn it in the opposite direction so that boots did not brake (see. Section Adjustment of the parking brake). Establish bolts of fastening of wheels and tighten them with demanded effort.
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