Section Il. RUSTPROOFING PROCEDURES
a. Dry Film Thickness Requirements. A five mil dry
10-3. Rustproofing Procedures.
film thickness is required for adequate rustproofing
protection. A 10 mil wet film thickness is required to
obtain a minimum five mil dry film thickness. If
needed, the vehicle can be resprayed to reach proper
Do not spray any portion of moving
components, transmission, transfer case,
b. Spraying Pressure. The rustproofing compound
cylinders, pumps, valves, prop shaft,
should be applied to sheet metal and structural
exhaust system, rubber bump stops, brake-
members in even coats. Spraying pressure should be as
drums, brake backing plates, parking brake
low as possible while maintaining an even spray pattern.
linkage, shift linkage, tires, electrical
An acceptable starting point is 40 psi (276 kPa), but
components, engine linkages, or air intake
adjustments may have to be made, due to temperature
systems. Cover all areas with paper where
changes and differences in rustproofing compound.
Using too much pressure will waste compound by
causing overspray and excessively thick coatings.
There are areas where a 10 mil wet film
thickness cannot be obtained without
(1) Insert 90 degree short tool in holes A and
wasting a large amount of compound. In
spray in all directions to coat the entire interior surface
those areas, complete coverage of the
of the center supports.
surface area is necessary at whatever
thickness is obtainable.
(2) Insert the same tool into holes B and spray
in all directions.
For rustproofing procedures of specific
(3) Use short rigid tool to completely cover the
underbody including all open access areas.
Figure 10-3. Rustproofing Underbody,