g. Use the following procedure to adjust the nozzle
c. Heater should be placed around the drum
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
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
50F (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
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,
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
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