The placard can usually be found on the inner wheel
temperatures o f 1,000F (538C) to 1,700F
housing or the radiator support shield, and the canister
(927C), and could be a potential fire hazard. To
is usually located in the forward lower section of the
eliminate the possibility of fires, heat shields have been
installed between the bottom side of the floor and the
converter to dissipate heat. Rustproofing must not be
b. To comply with this federal law, the following
applied closer than 12 inches (30.5 cm) from the
procedure is recommended:
converter or heat shield.
(1) Locate the emission control instruction
placard and use masking tape to cover before spraying.
3-12. General Cleanup Instructions.
Remove the tape after spraying the engine compart-
(2) While processing the bottom side, locate
The more the vehicle is driven after
emission control canister and tape or wrap a rag around
rustproofing, the quicker it will set up.
the filtering element to prevent coating, The canister
can be identified by its round, black, can-shaped
a. After cleanup of a vehicle, leave doors ajar to
appearance with two rubber hoses attached to it. The
filter element is on the bottom side of the canister and is
allow material to drip on the pavement and not on the
a foam or fiber type.
b. Overspray must be removed from the radiator,
oil pan, transmission pan, clutch control rods, drive
shaft, brakes, shock absorbers, and tires. Material left
on the tires, wheels, or drive shaft may cause excessive
Do not apply rustproofing materials closer
vibration, resulting in costly damage. Material on the
than 12 inches (30.5 cm) from the catalytic
brake mechanism may render the brakes ineffective
converter and heat shields. Wipe off any
due to the lubricative properties of rustproofing
overspray prior to removing vehicles from
hoist. Failure to do so will cause overheat-
ing and possible damage.
c. Rustproofing compound will penetrate sound
deadening material in doors and will prevent the
material from drying out, cracking, peeling, etc. This
ment on vehicles weighing 6,000 pounds (2,724 kg) or
can only happen if the sound deadening material is
Section Ill. VEHICLE PREPARATION
3-13. Precleaning the Vehicle,
3-14. Inspections (Fielded Vehicles).
a. Every vehicle must be clean and dry before
rustproofing. The use of a high pressure washer will
provide the best means of vehicle cleaning.
If the rust is in Stage 1 of its development, it
will be neutralized by rustproofing only if the
b. Direct the water spray at every area where dirt
area is properly processed. Refer to
has accumulated. Inspect such areas as the fender lips,
lower fender brace, top of frame members, etc., in
order to ensure that the entire underside is clean.
Particular attention should be given to the front
a. Using the inspection light, inspect the entire
fenders, since dirt is often packed around headlight
vehicle, paying particular attention to the areas where
housings and eyebrow areas.
dirt and moisture collect, Any seam beginning to split or
c. It takes at least four hours to completely dry a
expand must be repaired, as well as metal surfaces that
vehicle under ideal conditions.
have begun to pit or flake.