Vectra B
Subject:
Spray Seam Sealing for Body Repairs
Vehicles:
All
General:
This Technical Information Bulletin describes a new system for working with universally applicable Spray Seam Sealing (SSS) for body repairs. This system is a useful, economical addition to the existing sealing methods.
The SSS has the following performance characteristics:
· Appearance of repaired seams corresponds to production seals. · Good adhesion on metal, primed surfaces and colour coats · Does not contain isocyanate, silicon and polyvinyl chloride (PVC) · Fast drying, age - resistant, noise - insulating, wear - resistant · Increased corrosion protection · Resistant to ultraviolet light · Good for top - coating
General Description
The SSS is a sealing paste containing solvents based on polyether, with reacts with humidity to cross - link into a permanently elastic, wear - resistant product. The curing times are dependent on the air humidity, temperature and thickness of layer.
The system consists of the Sealing Material 90 543 279 / 15 03 176, available in cartridges (310 mm) with the corresponding replacement nozzles. It is processed using the Telescopic Pistol MKM - 950.
It is also possible to use the Telescopic Pistol MKM - 950 to process conventional 310 ml cartridges. A special union nut is enclosed for this purpose (multi - functional use).
Applications
The SSS can be used in body repair for sealing welding seams, edges, folds and for surface application in the areas specified in sections 2. 1 to 2. 6.
The telescopic pistol can be used to produce various seam shapes, allowing the sealing seams used in production to be reproduced.
The following illustrates the individual applications using the Vectra - as an example.
Limitations
A Always apply SSS to primed surfaces.
Important: Loss of adhesion will result if SSS is applied to surfaces treated with spot weld paint, zinc dust paint and zinc spray.
B Only apply SSS to hardened materials (sealing materials, adhesive).
Operations - Quick Survey
The following quick survey illustrates the work steps procedure
Step A Service Literature A1 Service literature A2 Safety measures
Step B Materials, Tools B1 Preparation
Step C Preparation of Body Surface C1 Sanding the Surface C2 Clean Seam Area C3 Priming
Step D Tool Preparation D1 Prepare cartridge D2 Attach air nozzle D3 Connect compressed air hose D4 Multi - functional use
Step E Nozzle Adjustment E1 Adjustment of setting bolts
Step F Application F1 Nozzle adjustment and spray patterns
Step G Cleaning G1 Exchangeable nozzle G2 Cleaning equipment
Step H Top - coating
Step I Environmental protection, disposal I1 Dispose of materials as specified by national regulations
Operations - Details
Step A Service Literature
A1 Service Literature
The following Service literature is available:
· This Technical Information Bulletin about the Spray Seam Sealing System · The new system will be included in revised editions of Service Instructions and Corrosion Protection brochures.
A2 Safety Measures
In general, the user must always be protected against hazards and stress. The onus of responsibility lies with the employer or superior to ensure that work can be performed without risk. National legislation, guidelines and regulations on labour safety must be observed, such as:
· Accident prevention regulations and guidelines from the authorities of legal work associations · Ordinances about flammable fluids · Workplace ordinances · Workshop guidelines · Materials ordinances
These regulations may vary from country to country.
Process SSS in closed, well - ventilated workrooms only.
Step A Service Literature
A2 Safety Measures
· Check that the telescopic pistol union nut is firmly seated.
· Uncouple the air line before changing the cartridge.
· Use only undamaged cartridges.
· Do not point the telescopic pistol at people.
Step C Preparation of Body Surface
C1 Sand surface
· Roughen surface with emery paper
C2 Clean seam area
· The seam area must be clean, dry and free from grease before application.
Use silicon remover to clean.
C3 Priming (filling)
Apply primer to bare areas only.
Step F Application
F1 Nozzle adjustments and spray patterns
Check nozzle adjustment before application. Hold pistol as perpendicularly and at right angles to the surface.
Step G Cleaning
G1 Nozzle change
· As the nozzles are exchanged along with the SSS cartridge, cleaning is not necessary.
G2 Cleaning equipment
· Clean dirty equipment with silicon remover. · Remove dried SSS mechanically from dirty equipment. · Always keep thread on the pistol clean and treat occasionally with commercially available grease.
Step H Top - coating / Assembly Stability
Before painting or further processing on the SSS, note the following processing information:
Notes: External paint shops must be informed about this processing information. At present, there is no data on the use of water - based paint. The corresponding tests are still underway and will be published on completion.
Step I Environmental Protection, Disposal
I1 Dispose of materials as specified by national regulations.
Part and Product Characteristic Data
Product Characteristic Data:
1) Shelf life in intact container
Parts
Time Allowance
The published time allowances remain valid.
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