Volkswagen Golf Service & Repair Manual: 2-pack HS top coat

Designation:

2-pack HS uni (solid-colour top) coat -L2K 073 ... ..-

2-pack HS mixture paint -L2K 074 ... ..-

Issued 04.2013

Product description

The 2-pack HS top coat series is a high-solid, uni (solid-colour) top-coat system. It is used for car finishing. The colour range is comprehensive due to a selection of mixture paints adjusted for this purpose.

Properties:

Easy to apply

Fast-drying

Excellent top coat flow

VOC conformity under 420 g/l

Technical data sheet

Substrate

Suitable substrates:

Fully cured, solvent-resistant, well-preserved and lightly sanded old paint or original paint

Surfaces treated with primer or surfacer

Suitable priming materials:

Depends on the object and the substrate, in accordance with recommendations for paintwork structure

Substrate pre-treatment:

Thoroughly clean with silicone remover -LVM 020 000 A5- or slow-drying silicone remover -LVM 020 100 A5-.

Dry sand using orbital sander with P400 to P500-grain sandpaper and dust collector.

Or lightly “wet” sand using P800 to P1000-grain sandpaper.

Before recoating, use a suitable cleaning agent to ensure a clean surface free of residues.

Application

Mixing ratio:

3:1 by volume with:

2-pack VHS hardener, fast-drying -LHA 009 050 A2- (for small areas and spot repair) 2-pack VHS hardener -LHA 009 051 A2-/-LVM 009 051 A5- (for small to medium-size areas at moderate temperatures) 2-pack VHS hardener, slow-drying -LHA 009 052 A2-/-LHA 009 052 A3- (for larger areas at moderate temperatures) 2-pack VHS hardener, extra slow-drying -LHA 009 053 A2- (for large areas at high temperatures)

See technical data sheet for 2-pack VHS hardener → Chapter

Note The mixture ratio for black matt -L2K 073 3FZ A2- and grey matt -L2K 073 7DL A2- is 4:1 with2-pack VHS hardener -LHA 009 051 A2-/-LVM 009 051 A5-.

Application time/pot life:

Mixed for spraying, 60 to 90 minutes at +20 °C

May be thinned with 2-pack thinner, special -LVM 009 200 A2-, HS spot thinner -LVM 006 000 A2- or 2-pack thinner, slow-drying -LVM 009 300 A2-

Note If HS spot thinner -LVM 006 000 A2- is used, observe the technical data sheet → Chapter.

Method of application: “spray”.

Application viscosity for +20 °C material temperature.

Application viscosity “compliant” and “HVLP”:

18-20 seconds

18-25 seconds for black matt -L2K 073 3FZ A2- and grey matt -L2K 073 7DL A2-.

Add 12.5% thinner at +20 °C material temperature.

Adjust spray nozzle following manufacturer's instructions to 1.2-1.4 mm for “compliancy”.
Adjust spray nozzle following manufacturer's instructions to 1.3-1.4 mm for “HVLP”.
Adjust spray pressure following manufacturer's instructions to 2.0-2.5 bar for “compliancy”.
Adjust atomising pressure following manufacturer's instructions to 0.7 bar for “HVLP”.

One-and-a-half spray coats are necessary to achieve the recommended dry-film thickness of 50-60 µm.

Note When used for spot repairs (Clever Repair method), 12.5% HS spot thinner -LVM 006 000 A2- may be substituted for the 12.5% 2-pack thinner, special -LVM 009 200 A2-.

Do not apply to horizontal surfaces.

The first half-coat should form a uniformly thin film over which a full spray coat is directly sprayed. If the paint hue does not hide well, it may be necessary to apply an additional spray coat after an appropriate flash-off time. 2-pack HS top coat can be recoated with more of the same paint within 24 hours without »intermediate sanding«. The mixing colours in this mixing paint series can be used only as part of a colour formula. If any mixing colour is applied alone, the results may differ substantially to the description in this technical data sheet.

Drying

Air drying at +20 °C ambient temperature:

Dust dry in 20-30 minutes

Dry for assembly in 5-6 hours

Dry overnight

Final flash-off time with force drying is at least 5-10 minutes.

Force drying at +60 °C material temperature in 15-20 minutes.

The final flash-off time with infrared drying is at least 5 minutes.

Infrared drying of light colours with short-wave radiant heater: 5 minutes at 50% power and then 10 minutes at 100% power.

Infrared drying of light colours with medium-wave radiant heater: 15 minutes

Infrared drying of dark colours with medium-wave radiant heater: 12 minutes

Infrared drying of dark colours with short-wave radiant heater: 12 minutes at 50% power

Note If a short-wave radiant dryer is operated at 100% power to dry dark colours, bubbles or blisters may develop when the next coat is applied.

Special notes:

Elasticisation:

First mix the base material with 15% elastic additive -ALZ 011 001-.

Mixture with 2-pack VHS hardeners, 3:1 with 15% thinner

Matting and texturing:

First mix the base material with 100 % matting additive -ALN 775 106- or fine texture additive -ALN 775 108-.

Note No further addition of matting additive -ALN 775 106- is necessary for the 2-pack uni (solid-colour) top coats black matt -L2K 073 3FZ A2- and grey matt -L2K 073 7DL A2- because they are already prepared for a matt finish. Mixing ratio with 2-pack VHS hardeners -LHA 009 051 A2-/-LVM 009 051 A5- is 4:1 with 15% thinner. Two spray coats with 5-10 minutes flash-off time are necessary for a uniform paint film surface.

Personal protective equipment:

Adhere to the safety data sheet.

Wear personal protective equipment during application.

Data

Viscosity as supplied	Depends on paint colour
Flash point:	+23 °C
VOC content: 2004/42/IIB(d)(420)420	The EU limit value for this product (product category IIB.b) in ready-to-spray form is max. 420 g/l of volatile organic compounds. The VOC content of this product in ready-to-spray form is max. 420 g/l.

Storage

Guaranteed storage time of 2-pack HS uni (solid-colour) top coat -L2K 073 ... ..- is 24 months from production date. The guaranteed storage time of 2-pack HS mixing paint -L2K 074 ... ..- is 36 months from production date. Both products may be used until the date stated on the label at latest if stored in sealed original containers at +20 °C.

2-pack HS top coat