Section III. RUSTPROOFING PROCEDURES

TB 43-0213

Section Ill. RUSTPROOFING PROCEDURES

4-4.

Rustproofing Procedures.

CAUTION

Do not spray any portion of moving compo-

nents, transmission, transfer case, cylin-

ders, pumps, valves, prop shaft, exhaust

system, rubber bump stops, brakedrums,

brake backing plates, parking brake linkage,

shift linkage, tires, electrical components,

engine linkages, or air intake systems. Cov-

er all areas with paper where necessary.

TA504783

NOTE

Figure 4-10. Rustproofing Firewall.

There are areas where a 10 mil wet film

Compartment Rails (see

d. Rustproofing Crew

thickness cannot be obtained without

Figure 4-11).

wasting a large amount of compound. In

those areas, complete coverage of the

(1) Insert 90 degree short tool into hole A of

surface area is necessary at whatever

the inner rails as far as possible, then spray in all

thickness is obtainable.

directions

For rustproofing procedures of specific

Plug all holes.

(2)

body items, refer to Figure 4-10 through

Figure 4-15.

(3) Use short rigid tool to sprav the floor areas

under the gas tank and all areas including the

surrounding sills.

a. Dry Film Thickness Requirements, A five mil dry

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

thickness.

b. Spraying Pressure. The rustproofing compound

should be applied to sheet metal and structural

members in even coats. Spraying pressure should be as

low as possible while maintaining an even spray pattern.

An acceptable starting point is 40 psi (276 kPa), but

adjustments may have to be made, due to temperature

changes and differences in rustproofing compound.

Using too much pressure will waste compound by

causing overspray and excessively thick coatings.

c. Rustproofing Firewall (see Figure 4-10).

TA504784

Figure 4-11. Rustproofing Crew

Compartment Rails.

(1) Insert flexible tool as far as possible into

firewall holes A and B, then spray in all directions while

C a r r i e r (see

Tire

Spare

e. Rustproofing

slowly withdrawing tool. Enlarge holes to allow entrance

Figure 4-4), Insert 90 degree short tool into holes A,

of flexible tool, if necessary.

B, and C of the spare tire carrier, then spray in all

directions.

(2) Plug all holes.

4-8