Chevrolet-Niva
1. The car device
2. Recommendations about operation
3. Malfunctions in a way
4. The engine
5. Transmission
6. A running gear
7. A steering
8. Brake system
9. An electric equipment
10. A body
10.1. Features of a design
10.2. Removal and installation of lobbies Lockers
10.3. Removal and installation of forward wings
10.4. Removal and installation of decorative overlays on forward wings and doors
10.5. Replacement of buffers
10.6. Removal and installation of facing of a radiator
10.7. Removal and cowl installation
10.8. Removal, installation and adjustment of the lock and a drive of the lock of a cowl
10.9. A back door
10.10. Forward doors
10.11. Back doors
10.12. Removal and installation of a cover of the hatch of a fuel tank
10.13. Seats
10.14. Removal of upholsteries of salon
10.15. Replacement of seat belts
10.16. Mirrors
10.17. Replacement противосолнечных peaks
10.18. Replacement of hand-rail
10.19. Removal and installation of facing of a tunnel of a floor
10.20. Removal and installation of the panel of fastening of a radio receiver
10.21. Removal and installation of the panel of devices
10.22. A heater
10.23. Replacement of a windscreen and glasses of a door of a back and боковины
10.24. Care of a body
10.25. Anticorrosive protection of a body
10.26. Possible malfunctions of a body, their reason and ways of elimination
11. Variants of execution of the car
12. Care of the car
13. Purchase of spare parts
14. A trip on HUNDRED
15. Winter operation of the car
16. Preparation for checkup
17. Appendices
 















10-25-antikorrozionnaya-zashhita-kuzova.html

10.25. Anticorrosive protection of a body

Hollow profiles of a body, the bottom, the bottom parts of doors and racks, and also connections of details of a body, including a spot welding place are most of all subject to corrosion. Most quickly corrosion develops in the latent cavities and the bottom parts of a body at hit of a moisture, a dirt, salts, acids.
In this connection while in service the car for additional protection of internal surfaces and the latent cavities of a body put special anticorrosive structure, and in connections of details – sealing mastics. Applied materials for anticorrosive processing are specified in tab. 10.1.

Table 10.1 Anticorrosive structures for body processing
The structure name
Mark
Working viscosity, with, at 20 °С on ВЗ-4
Kind of solvent,
Thinner
Drying mode
Temperature, °С
Time, mines
Autopreservative of thresholds
Мовиль
Мовиль-2
15-40
Uajt-spirit,
Gasoline
20
20-30
Protective lubricant non-drying
NGM-ML
45
Uajt-spirit
20
15
Protective film covering
НГ-216Б
18-22
Uajt-spirit,
Gasoline
20
20
Mastic the antinoise bitumen
БПМ-1
High viscosity
Ксилол, сольвент
100-110
30
Plastic compound полихлорвиниловый
Пластизоль
Д-11А
The same
-
130
30
Plastic compound
Пластизоль
Д-4А
>>
-
130
30
Mastic non-drying
51-G-7
>>
-
-
-

Autopreservative "Movil" or "Movil-2" is used for processing of the latent cavities. It is recommended to process cavities every 1-1,5 year. Autopreservative supposes processing of surfaces, before covered нигролом or other oils, and also rusty surfaces.
Protective lubricant "NGM-ML" is applied to processing of the latent cavities. This material processes the latent cavities of new cars.
The protective film covering «НГ-216Б» is used for a covering of parts of the car under a body. Mastic antinoise bitumen «БПМ-1» is applied to protection against corrosion of the bottom of a body and for noise reduction. A thickness of a covering of 1,0-1,5 mm.
Пластизоль «Д-11А» it is used for protection of the bottom of a body against corrosion, against abrasive deterioration and for a noise isolation. A thickness of a covering of 1,0-1,2 mm. Пластизолем «Д-11А» the bottoms of new cars are processed.
Пластизоль «Д-4А» it is applied to hermetic sealing of welded seams. Non-drying mastic "51-G-7" is used for hermetic sealing of joints of a body. In internal cavities anticorrosive substance напыливается in the way of air and vacuum dispersion.
At air dispersion compressed air with pressure 0,5–0,8 МПа, a pistol-kraskoraspylitel with a tank, hoses and lengthening nozzles for a pistol is required. Better quality of a covering is reached at vacuum dispersion under the pressure of 4–12 МПа which allows распыливать materials of considerable viscosity.

Preparation and anticorrosive processing of the latent cavities
In view of application of the difficult process equipment and necessity of high-quality performance of works processing of the latent cavities is recommended to be carried out at servicing deports of cars.
Order of performance of operations for protection against corrosion of the latent cavities:
– Establish the car on the lift, remove details and an upholstery, interfering access to the latent cavities;
– Wash out water in temperature 40–50 °С through technological and drainage apertures the latent cavities (tab. 10.2) and a bottom of a body to вытекания at its finest. Thus опускные glasses of doors should be lifted;

Table 10.2
The latent cavities processed by anticorrosive structures
The cavity name
Place of injection of structure
Direction of injection of structure
Additional instructions
Cowl cavity
In apertures of the internal panel of a cowl
On all internal surface
Open a cowl
Pockets of forward doors
Through apertures in the internal panel of a door
On all internal surface
Remove upholsteries of forward doors
Pocket of a door of a back
Through apertures in the internal panel of a door
On all internal surface
Remove a door upholstery
Between arches of back wheels
In apertures of cavities in a luggage space
On all surface
Remove an upholstery in a luggage space
Mudguard cavity
From a motor compartment and from under a wheel arch
Downwards and upwards
Will hang out the car
Floor longerons
From salon and from below a body
Forward and back
Will hang out the car
Floor cross-beams
From salon and from below a body
To the right and to the left
Remove rugs
Cavity of a back part of a floor
From below bodies
To the right and to the left
Will hang out the car

– Remove the moisture which has got to salon and a luggage space, blow compressed air all places of drawing of anticorrosive structures;
– Put the car on the lift. Put dispersion anticorrosive structure;
– Lower the car from the lift, clear of pollution obverse surfaces of a body the rags moistened in uajt-spirite.
While in service the car the covering on the body bottom is exposed to influence of gravel, sand, salt, a moisture. As a result mastic and a ground are damaged and erased. The bared metal is exposed to corrosion.
At covering damages пластизоля «Д-11А» without infringement of a layer of earth the damaged sites clear of a dirt and on a dry surface vacuum dispersion or a brush put пластизоль. Dry пластизоль at temperature 130 °С within 30 minutes
Drawing instead of пластизоля antinoise mastic «БПМ-1» which drying can pass under natural conditions is supposed.
Before covering restoration establish the car on the lift, carefully examine a bottom of a body and reveal defects of a covering.
Clear of a dirt a body bottom, remove a rust шпателем, an emery paper or the rust converter according to the instruction. Blow in a body bottom the compressed air. Establish the car on the lift in the chamber for drawing of mastic and remove wheels. Close drums and disks of brakes protective casings, isolate a dense paper and a sticky tape карданную transfer, mufflers, cables and other places which are not subject to processing by mastic.
The rags moistened in uajt-spirite, degrease the places smoothed out to metal.
On the smoothed out places put dispersion or a brush ground ГФ-073 and sustain 5–10 minutes Then put dispersion or manually (a brush or шпателем) mastic «БПМ-1» on defective places a layer of 1,0-1,5 mm. Overlapping on an old coat layer «Д-11А» should be minimum.
In a cold season mastic before the use sustain in a warm premise before rise in temperature not more low 20 °С. In a case загустения mastics dilute it ксилолом, but no more than 3 %.
Paint and varnish covering clear of pollution by mastic by the rags moistened in uajt-spirite. Dry mastic at temperature 100–110 °С during 30 mines or at 18–28 °С not less than 24 ч.
Body hermetic sealing is provided with application of rubber sealants, glues, sealing mastics, the rubber stoppers closing technological apertures, and careful adjustment of interfaced details.
Removing and establishing уплотнители with metal skeletons, do not suppose смятия a skeleton and formation гофр on sealants.
Welded seams do not give full tightness of connections of details, and in case of moisture hit between welded details there there are corrosion centres. From moisture and dirt hit welded seams загерметизированы пластизолем «Д-4А». After replacement of separate details of a body miss the mark welded seams from both parties пластизолем «Д-4А» and put non-drying mastic of type "51-G-7" in angular joints and backlashes.

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10.26. Possible malfunctions of a body, their reason and ways of elimination