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 two coats of repair preservation agent, one after another with an air drying time of 5 min. 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.

It is also necessary to preserve replacement bodies twice after painting.

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.

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 spraying hose as far as possible to all sides in the hollow cavities. Spray while slowly inserting and retracting the hose (processing temperature not below +15 °C). Clean spray nozzle and spray hose together with spray equipment.