BMW X5: Grinding Aluminum Parts
1.0 Recommended tools and equipment
- To carry out outer shell grinding work by hand or machine, you must use
the recommended tools
and equipment.
The work area can be cleaned with conventional extractor systems (low dust concentration).
Weight-reduced aluminum front end structure (GRAV):
- To carry out grinding work by hand or machine, you must use the
recommended tools and
equipment.
The work area can be cleaned with conventional extractor systems (low dust concentration).
Z 8 Spaceframe structure:
- To carry out machine grinding on the structure, you must use the
recommended device with grinding dust extractor facility.
The work area must be cleaned with the recommended explosion-proof extractor system.
High dust concentration, explosion hazard!
2.0 Grinding outer shell and structure
Do not use any abrasives (grinding wheels, paper, etc.) which contain iron (risk of corrosion).
Always replace abrasives which have already been used to treat steel (risk of corrosion).
Use stainless steel wire brushes only (risk of corrosion).
Reduce speed of grinding machines. Excessive speeds cause a smearing effect.
Do not use coarse abrasive grains (only > or =. 80).
Do not grind notches into the material (risk of cracking).
Do not grind the material thin.
Grinding Steel Parts
1.0 Recommended tools and equipment
- Tools are recommended for manual grinding work.
- Machines/equipment are recommended for machine grinding work.
2.0 Grinding outer shell and structure
Always replace abrasives which have already been used to treat aluminum (risk of corrosion).
Do not grind the material thin.
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Handling Airbags And Restraint Systems
1.0 Airbags and restraint systems
On vehicles with airbags and restraint systems, observe the relevant
safety instructions.
During straightening work on the body, you will be exposed to the risk
Installation Of A Cavity Seal With Cavity Foam
Sourcing reference for cavity foam.
IMPORTANT: The cavity foam may only be use for cavity sealing at the
points at which cavity
sealing is present as standard!
The following repair represents the rep
Opening Adhesive Bonds
1. Opening spot-weld bonds
Set punch mark in center of weld spot. Set 8 mm dia. weld spot drill bit
on punch mark and drill
through top metal sheet.
Or open weld spot with Vario Drill spot weldi
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Front Axle + Steering: Wheel/Chassis Alignment Check Must Be Carried
Out After The Following Work
Fig. 3: Identifying Front Axle Components
A wheel/chassis alignment check must be carried out after the following work:
Release of following screw/bolt connections:
Steering gear to front axle carrier
Lower control arm to front axle carrier
Tie rod end to tie rod
Replacement of followi
Corrosion Protection
NOTE: Following repairs, the corrosion protection work already begins
with the correct
removal of the PVC undercoating, antinoise compound and seam seals.
1.0 Removing sealing materials:
IMPORTANT:
Do not burn off PVC material with a gas burner or similar or heat
to
temperatures above 180ºC.
