Operating Drum Heaters.

TB 43-0213

g. Use the following procedure to adjust the nozzle

c. Heater should be placed around the drum

tip pattern:

approximately 12 hours prior to compound applica-

tion. Before the rustproofing operation begins,

(1) Loosen the tip reta ning nut.

recirculate the compound through the drum to ensure

uniform temperatures. This will ensure that rustproof-

(2) Rotate the tip until slot is in line with the

ing materials are more fluid and easier to spray.

wand directional handle-.

tip in this position and tighten

( 3 ) Hold

CAUTION

retaining nut.

Belt-type heaters must not be used with

plastic containers or containers with plastic

3-9. Operating Drum Heaters.

liners. The plastic may melt and cause

damage to the equipment and the vehicle.

When the working area temperature drops below

50°F (10 "C), use of a drum heater is recommended.

d. There are two types of drum warmers, belt-type

b. The drum of rustproofing compound should be

and full wrap (see Figure 3-20). The full wrap drum

placed on a raised platform above the floor to prevent

heater is much more efficient because it warms the

transfer of floor temperatures to drum contents.

material evenly and quickly,

TA504772

Figure 3-20. Drum Heaters.

Section Il. RUSTPROOFING APPLICATION TECHNIQUES

3-10. General Requirements/Safety Pre-

b. Front End. It is sometimes necessary to remove

headlight rims in order to spray coat the headlight

cautions,

buckets and associated hardware. If they are metal, be

a. Battery. The positive (red) terminal of a

sure to paint the backside of the rims before they are

vehicle's battery must be covered to prevent grounding

replaced. Some late model commercial vehicles may

the battery through a spray tool.

have carburetor air intakes located inside one of the

3-19