Processing instructions for cavity preservation agent - AP97.20-P-0640-01A

The cavity preservation with wax already performed at the factory completes the corrosion prevention measures.

No repetition of this preservation work is necessary.

Repair preservation 

Following accident repairs, spray hollow cavities with wax in the repaired area. When replacing detachable body components, e.g. front fender, engine hood, doors, trunk lid as well as during welding, riveting and soldering work, also perform repair preservation.

Always apply repair preservation agent twice with a drying time of 5 minutes in between.

After drying, ensure that drain holes are not plugged.

It is important that the wax preservation agent is applied following sealing and paintwork, however, before assembly. Otherwise painting defects can occur or attached parts may be contaminated with wax.

Also apply preservation agent to replacement bodies twice after they have been painted.

Replacement bodyshells top-coated in the factory have already been treated with the standard cavity preservation.

Working instructions 

The cavities must be dry before preserving. Before commencing preservation work, check the spray pattern from the spraying hose or spray can. The wax must spray uniformly from the openings in a circular pattern.

If necessary protect the interior against wax with film

Particularly advantageous are nozzles which spray toward the front as well as at an angle toward the rear.

The spraying hose of the hand-held lance must be "stiff". Hoses that tend to roll up are not suitable.

When preserving, insert the spraying hose into the cavities in all directions as far as possible. Spray while slowly inserting and retracting the hose (processing temperature not below +15 °C). Clean spray nozzle and spray hose together with spray equipment.