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(801-2436) MIG brazing

TECHNICAL SERVICE BULLETIN
Bulletin Nbr: 801-2436
Date: ........... Januari 2004
Market: EU
MIG brazing

Cars affected

9-5 M04 from and including Vehicle Identification Number 43500372

9-3 (9440) M04 from and including Vehicle Identification Number 41033093

Background

A new type of welding method has been introduced into production which involves a change to repair methods for workshops. Some weld joints on the car have been replaced by a new type of weld joint where the filler material is bronze rod, so-called "MIG brazing". The distinctive feature of MIG brazing is that the joint is gold in colour.

Sheet metal damage where there is MIG brazing involves a new procedure for repairs. Before the Saab workshops have procured new equipment, damaged cars with MIG brazing must be taken to the closest Opel workshop which has MIG brazing equipment. A list of approved MIG brazing equipment is in 1:4 Workshop equipment and in our database IRIS under Service Information - Technical News - Group 8 Body- MIG-Brazing - Opel dealer MIG Brazing equipment. The list in IRIS will be updated regularly and will be found under "What's New?". Where appropriate, where Opel authorised workshops do not have suitable equipment, contact one of the six approved suppliers for support. The list of "MIG- Brazing equipment suppliers" is in our database IRIS under Service Information - Technical News - Group 8 Body- MIG-Brazing.

In all cases 100% pure argon gas must be used and the welding rod must be 1 mm.

The appearance of a MIG brazing joint differs compared with a conventional weld joint. However, when welding with low energy the arc is occasionally broken, resulting in stronger sizzling and more spray. A good MIG brazing joint must be evenly rounded.

Lap joint:


Edge in edge joint:


MIG brazing emits a significant amount of zinc gas in the molten material and brass is formed, with few or no air holes as a result. As MIG brazing is a soldering process where the plates do not need to be melted together, there is also less risk of burning holes. In the cases where grinding is required the welds are considerably easier to grind.

Ensure that the independent workshops which are engaged have access to this information.

Parts required

16-93 180 983 Bronze rod 1mm

100% pure argon gas

Warranty/Time Information