Volkswagen Golf Service & Repair Manual: 2-pack HS Vario surfacer

Designation:

2-pack HS Vario surfacer -LGF 786 004 A4-, grey

Issued 04.2013

Product description

2-pack HS Vario surfacer is a high-grade, versatile, VOC-compliant 2-pack HS surfacer based on acrylic resins.

Properties:

Can be applied wet-on-wet or as sanding surfacer

Can be mixed with HS and VHS hardeners

Good isolating properties even on old thermoplastic paint

Very good top coat flow

Technical data sheet

Substrate

Suitable substrates:

Sheet steel, electroplated or roller galvanized sheet steel or soft aluminium, cleaned, sanded and coated with 2-pack wash primer -LHV 043 000 A2- or 1-pack wash primer -LVM 044 007/171 A2-

Finely sanded or unsanded, thoroughly cleaned, original factory primer

Cleaned and sanded electroplated or roller-galvanised steel panels or soft aluminium

Lightly sanded factory paint or old paint (including thermoplastic paint)

Surfaces prepared with 2-pack polyester products and then finely sanded

Cleaned and sanded UP-GF (fibreglass) surfaces, free of release agents

Substrate pre-treatment:

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

Then lightly sand.

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

Application with intermediate sanding

Mixing ratio:

5:1 by volume with:

2-pack VHS hardener -LHA 009 051 A2-/-LVM 009 051 A5-

2-pack VHS hardener, slow-drying -LHA 009 052 A2-/-LHA 009 052 A3-

2-pack VHS hardener, extra slow-drying -LHA 009 053 A2-

Mixing ratio:

3:1 by volume with:

2-pack HS hardener, fast-drying -LHA 021 004 A3-

2-pack HS hardener -LHA 009 041 A3-

2-pack HS hardener, slow-drying -LHA 009 047 A3-

2-pack HS hardener, extra slow-drying -LHA 009 048 A3-

For elasticization, see → Anchor

Application time/pot life:

Mixed for spraying, 30-60 minutes at +20 °C

Thinner:

2-pack thinner -LVE 009 001 A5-

2-pack thinner, slow-drying -LVM 009 300 A2-

2-pack thinner plus -LHA 014 000 A5-

2-pack thinner, special -LVM 009 200 A2/A5-

Method of application: “spray”.

Application viscosity 4 mm, +20 °C, DIN 53211

Application viscosity 4 mm, gravity-feed spray gun “compliant” and “HVLP”:

DIN 4 mm: 20-25 seconds

Add 10-15% HS hardener or 10-20% VHS hardener at material temperature +20 °C

If hardener is added, use measuring stick to mix.

Adjust spray nozzle following manufacturer's instructions to 1.4-1.8 mm for “compliancy”.
Adjust spray nozzle following manufacturer's instructions to 1.6-1.9 mm for “HVLP”.
Adjust spray pressure following manufacturer's instructions to 1.5-3.0 bar for “compliancy”.
Adjust atomising pressure following manufacturer's instructions to 0.7 bar for “HVLP”.
Two spray coats are necessary to achieve a dry-film thickness of 50-80 µm.
Three spray coats are necessary to achieve a dry-film thickness of 100-120 µm.
The specified thickness for the dry film is 50-120 µm.

Drying with intermediate sanding

Air dry at +20 °C ambient temperature; must dry overnight before sanding

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

Force drying at +60 °C material temperature up to 80 µm, 20-30 minutes, and greater than 80 µm, 40-45 minutes.

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

Infrared drying (depending on coat thickness) with medium-wave radiant heater, 10-20 minutes and with short-wave radiant heater, 10 minutes.

Further steps

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

Wet sand with P800 to P1000-grain sandpaper.

Recoating with intermediate sanding

Recoat with:

Waterborne base coat and 2-pack HS clear coat

2-pack HS top coat

Application as “wet-on-wet” surfacer

Mixing ratio:

5:1 by volume with:

2-pack VHS hardener -LHA 009 051 A2-/-LVM 009 051 A5-

2-pack VHS hardener, slow-drying -LHA 009 052 A2-/-LHA 009 052 A3-

2-pack VHS hardener, extra slow-drying -LHA 009 053 A2-

Mixing ratio:

3:1 by volume with:

2-pack HS hardener, fast-drying -LHA 021 004 A3-

2-pack HS hardener -LHA 009 041 A3-

2-pack HS hardener, slow-drying -LHA 009 047 A3-

2-pack HS hardener, extra slow-drying -LHA 009 048 A3-

Application time/pot life:

Mixed for spraying, 30-60 minutes at +20 °C

Thinner:

2-pack thinner -LVE 009 001 A5-

2-pack thinner, slow-drying -LVM 009 300 A2-

2-pack thinner plus -LHA 014 000 A5-

2-pack thinner, special -LVM 009 200 A2/A5-

Method of application: “spray”.

Application viscosity 4 mm, +20 °C, DIN 53211

Application viscosity 4 mm, gravity-feed spray gun “compliant” and “HVLP”:

DIN 4 mm: 16-18 seconds

Add 20-25% HS hardener or 30% VHS hardener at material temperature +20 °C.

If hardener is added, use measuring stick to mix.

Adjust spray nozzle following manufacturer's instructions to 1.2-1.4 mm for “compliancy”.
Adjust spray nozzle following manufacturer's instructions to 1.3-1.5 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”.
The specified thickness for the dry film is 25-30 µm. One or two spray coats are necessary to achieve this.

“Wet-on-wet” application

Flash-off time before application of top coat at +20 °C ambient temperature:

15-20 minutes up to max. 90 minutes with 2-pack HS top coat

25-30 minutes up to max. 90 minutes with waterborne base coat

30-35 minutes up to max. 90 minutes with Aqua-Premium waterborne base coat

Recoating as “wet-on-wet” surfacer

Recoat with:

Waterborne base coat and 2-pack HS clear coat

2-pack HS top coat

Special notes

Elasticization for rigid and semi-rigid plastics:

First mix the base material with 15% elastic additive -ALZ 011 001-. Mixing ratio 3:1 with VHS hardeners and 20% thinner, 2:1 with HS hardeners and 20% thinner.

Any substrate defects can be treated with 2-pack polyester filler. After drying and intermediate sanding, isolate the filler patches with 2-pack HS Vario surfacer.

To achieve an optimal finish on passenger cars, it is recommended to let the surfacer dry overnight before sanding it.

Do not apply wet-on-wet on top of thermoplastic factory finish, and if possible let the surfacer dry overnight before sanding it.

A minimum temperature of +15 °C is recommended for air drying.

Caution The flash-off times increase to between 30 and 40 minutes before applying base coats or 2-pack top coats.

Personal protective equipment:

Adhere to the safety data sheet.

Wear personal protective equipment during application.

Data

Viscosity as supplied	Thixotropic
Flash point:	Above 23 °C
VOC content: 2004/42/IIB(c)(540)540	The EU limit value for this product (product category IIB.b) in ready-to-spray form is max. 540 g/l of volatile organic compounds. The VOC content of this product in ready-to-spray form is max. 540 g/l.

Storage

The guaranteed shelf life is 24 months from date of production. May be used until the date stated on the label at latest if stored in sealed original containers at +20 °C.

2-pack HS Vario surfacer

Designation:

Issued 04.2013

Product description

Properties:

Technical data sheet

Substrate

Suitable substrates:

Substrate pre-treatment:

Application with intermediate sanding

Mixing ratio:

Mixing ratio:

For elasticization, see → Anchor

Application time/pot life:

Thinner:

Method of application: “spray”.

Application viscosity 4 mm, gravity-feed spray gun “compliant” and “HVLP”:

DIN 4 mm: 20-25 seconds

Add 10-15% HS hardener or 10-20% VHS hardener at material temperature +20 °C

Drying with intermediate sanding

Air dry at +20 °C ambient temperature; must dry overnight before sanding

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

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

Further steps

Recoating with intermediate sanding

Recoat with:

Application as “wet-on-wet” surfacer

Mixing ratio:

Mixing ratio:

Application time/pot life:

Thinner:

Method of application: “spray”.

Application viscosity 4 mm, gravity-feed spray gun “compliant” and “HVLP”:

DIN 4 mm: 16-18 seconds

Add 20-25% HS hardener or 30% VHS hardener at material temperature +20 °C.

“Wet-on-wet” application

Flash-off time before application of top coat at +20 °C ambient temperature:

Recoating as “wet-on-wet” surfacer

Recoat with:

Special notes

Elasticization for rigid and semi-rigid plastics:

Personal protective equipment:

Data

Storage

Test yourself