Because of the coarse surface structure of the
stone chip protection material, it is recommended
to only perform a repair over the whole surface, if
there is damage over visible areas. Otherwise there
is the danger of serious irregularities on the
surface.
The thickness and appearance of the underbody
protection and stone chip protection must be
matched to the original. Special spray guns are
used to work the materials for this reason. A test
spray must always be performed beforehand
however, to determine the correct appearance and
layer thickness.
Cavity protection
After painting work has been completed, a general
check is made of the work that has been done.
Before final reassembly of the vehicle, the cavity
wax protection in the area of the repair must be
renewed. Cavity wax protection must be performed
carefully so that the quality of the repair conforms
with Ford standards:
• Guide the cavity wax probe carefully in the area
of the repair so that targeted corrosion
protection is achieved.
• Pay special attention to edges and swage line
on stepped joints, the wax must cover the inner
edge areas.
• The cavity wax must flow along the stepped
sheets so that the wax is drawn between them
by capillary action.
A hole may be drilled in a suitable place for areas
which are not accessible for the application of
cavity wax. The diameter depends on the size of
plugs available. When this is done it is vital to make
sure that no drilling swarf remains in the cavity (rust
will form if any remains). The edge of the hole must
be treated with cavity wax. Finally close with a plug
and seal with underseal.
Only on components with clinched flange edges:
After painting, the inner clinched flange edge must
be sealed as far as is possible with cavity wax. For
this, the repaired component should be positioned
upright and corrosion protection wax sprayed into
the water drainage holes and/or the thread holes
for the hinges in both directions (50 ml corresponds
to about 20 seconds spraying time).
For doors, tilt and turn the component to spread
the corrosion protection wax over the whole edge
of the flange.
Wax application
G506660en
501-25-
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Body Repairs - General Information
501-25-
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DESCRIPTION AND OPERATION