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TB 43-0242 DEPARTMENT OF THE ARMY TECHNICAL BULLETIN CARC SPOT PAINTING HEADQUARTERS, DEPARTMENT OF THE ARMY TB 43-0242
DEPARTMENT OF THE ARMY TECHNICAL BULLETIN
CARC SPOT PAINTING
HEADQUARTERS, DEPARTMENT OF THE ARMY
1 January 1991
Approved for Public Release; Distribution is Unlimited
TABLE OF CONTENTS
Paragraph
Page
SECTION I. INTRODUCTION
Purpose
1-1
1
Scope
1-2
1
Suggested Improvements
1-3
1
General
1-4
1
SECTION II. THE CARC SYSTEM
The System
2-1
1
Identification
2-2
1
CARC Test
2-3
1
Spot Painting
2-4
2
Where Not Used
2-5
2
CARC on Wood
2-6
2
Unit-level Painting
2-7
2
Touch-up Painting
2-8
2
Complete Repainting
2-9
2
Three-Color Camouflage
2-10
2
Matching Patterns
2-11
3
SECTION III. BEFORE YOU PAINT
Before You Paint
3-1
3
Pubs You Need
3-2
3
Material Safety Data Sheets
3-3
3
Health Concerns
3-4
3
Weather for Painting
3-5
3
Drying Concerns
3-6
4
Coverage
3-7
4
i TB 43-0242
One-part CARC
3-8
4
Epoxy Curing
3-9
4
Time Line
3-10
4
SECTION IV. SAFETY PRECAUTIONS
Safety Needed
4-1
5
Solvents
4-2
5
Respiratory Protection
4-3
5
Gloves
4-4
5
Face Protection
4-5
5
Hearing Protection
4-6
5
SECTION V. TOUCHUP STEP-BY-STEP
Steps to Follow
5-1
5
Surface Preparation
5-2
5
Painting
5-3
5
Unused Paint
5-4
6
SECTION VI. PAINT FAILURES
Reasons for Failure
6-1
7
What to Do
6-2
7
SECTION VII. WELDING CARC-PAINTED SURFACES
Welding is Out
7-1
8
Remove Paint
7-2
8
SECTION VIII. PAINT REMOVAL
Stripper
8-1
8
Stripper NSNs
8-2
8
Safety
8-3
8
Waste Disposal
8-4
8
SECTION IX. RESPIRATOR CARE
Respirator Authorized
9-1
8
Training, Fitting and Testing
9-2
8
Cartridges not Available
9-3
8
Before Use
9-4
8
Respirator Use
9-5
8
Cartridge Changes
9-6
8
Prefilter Replacement
9-7
9
Cleaning
9-8
9
Storage
9-9
9
APPENDIX A. PUBLICATION LIBRARY
A-1
APPENDIX B. PAINT NSNs
B-1
ii TB 43-0242
SECTION I. INTRODUCTION
1-1. Purpose. This bulletin explains the Chemical
Agent Resistant Coating (CARC) process and provides
the field methods of spot painting using CARC.
1-2. Scope. This bulletin contains information on
CARC for operator and unit-level maintenance
personnel. It covers the reasons CARC is used,
application procedures, safety precautions and provides
NSNs for the primers and paints.
1-3. Suggested Improvements. You can help
improve this bulletin. If you find any mistakes or if you
know of a way to improve the procedures, please let us
know. Mail your letter or DA Form 2028 to:
Commander, US Army Materiel Command, ATTN:
AMCSMMMD, 5001 Eisenhower Avenue, Alexandria,
VA 22333-0001.
1-4. General. More and more equipment is being
painted with CARC. It has big advantages over the
older alkyd paint.
a. It lasts up to four times longer than alkyd
paint if applied properly. Similar polyurethane
paints are used on your car, commercial
machinery and bridgesanywhere a tough,
durable finish is needed. The CARC topcoat
also provides visual camouflage.
b. It provides a surface that resists the
penetration of chemical agents. They just bead
up on the surface like water on a newly waxed
car. That makes for quick, complete
decontamination and shorter times at MOPP-4.
c. The main word to remember is RESISTB 43-
0242 TANT. CARC resists chemical agents. It
does NOT soak up chemical agents the way
alkyd paint does. It also resists removal by
decontaminating solutions.
d. It is as easy to apply as alkyd paint. Both
require similar surface preparation.
e. It is as safe to use as any other paint when
you take the appropriate safety measures.
CARC's topcoat is similar to paint private
industry has used for years.
SECTION II. THE CARC SYSTEM
2-1. The System. The CARC system is a combination
of pretreatments, primers and topcoats. After surface
preparation and pretreatment, exteriors of vehicles are
painted with an epoxy primer, then with an aliphatic
polyurethane topcoat. The interior of hull-type vehicles
gets an epoxy enamel over the epoxy primer.
2-2. Identification. Most equipment painted in the new
three-color camouflage pattern wears CARC.
Equipment painted with CARC should have "CARC"
stenciled near the data plate.
2-3. CARC Test. If you don't see it stenciled, wet a
cloth with acetone and rub hard on the painted surface
for 10 seconds. Wet a clean corner of the cloth with
acetone and rub
1 TB 43-0242
another 10 seconds in the same spot. If no paint comes
off the second time, it's CARC. (The first wipe may
remove overspray and make you think it's not CARC.)
2-4. Spot Painting. Use only CARC when you have to
spot paint equipment painted with CARC. Likewise, only
use CARC for adding unit identification markings
(bumper markings). Using alkyd paint for this gives you
areas where chemical agents will be retained. Since the
alkyd paint previously used is not available anymore,
use CARC here, too.
2-5. Where Not Used. CARC is NOT used on fabric,
metals that have anodized or parkerized finishes (like
weapons), hoses or other flexible surfaces. It is not
used on exhaust pipes, turbochargers, cooling fins or
other surfaces that conduct heat or get above 400 E. If
you're not sure whether to use CARC on a particular
surface, check with your Logistics Assistance
Representative at the local USAMC Logistics Assistance
Office.
2-6. CARC on Wood. CARC won't last as well on
wood. Wood expands and contracts with weather
changes. CARC does not. It is not flexible enough to
move with the wood, so it cracks and can peel off.
Follow the word in Para 3-5e of TM 43-0139 to protect
wood.
2-7. Unit-level Painting. The word on using CARC is
in Para 4-42 of AR 750-1 in Maintenance Management
UPDATE. Unit-level painting is limited to touch-up or
spot painting using a brush or roller-no complete
repainting. That goes for all paints, not just CARC.
2-8. Touch-up Painting. Touch-up painting is done to
prevent corrosion, not for purely cosmetic reasons. If
the paint is marred, but not deep enough to see bare
metal, you do not need to paint.
2-9. Complete Repainting. Complete repainting-using
any kind of paint-is only done at Direct Support, General
Support and depot level maintenance facilities with
painting booths meeting OSHA standards. That's where
camouflage pattern painting is done, too, because the
paint must be applied very carefully to match specific
patterns for each piece of equipment. Camouflage
painting is covered by Chapter 4 of TM 43-0139.
2-10. Three-color Camouflage. Speaking of
camouflage, the Army is going to a three-color
camouflage pattern. Again, you don't repaint a vehicle
that's painted in the four-color pattern just because it's
different. Desertcamouflaged equipment painted with
CARC should be painted using Tan 686. Sand was the
orginal choice, but tan was found to be a better
camouflage color. Both colors are available, so match
your vehicle's color when spot painting.
2 TB 43-0242
2-11. Matching Patterns. When you're touching up a
camouflaged surface, try to repaint using the original
camouflage pattern. The pattern was designed to best
camouflage the equipment.
SECTION III. BEFORE YOU PAINT
3-1. Before You Paint. There's more to using CARC
(or any other paint) than grabbing a brush, a can of paint
and getting to work. Poor preparation results in a poor
paint job that may soon have to be redone.
3-2. Pubs You Need. To begin with, grab a copy of
TM 43-0139, Painting Instructions for Army Materiel,
and look it over. It explains each of the primers and
topcoats available and how to mix and use them. You
need a copy of TB Med 514, too. It covers health
precautions needed when using any paints.
Until the TB Med is printed, US Army Environmental
Hygiene Activity Technical Guide 144, Guidelines for
Controlling Health Hazards in Painting Operations,
covers this area. Get a copy from:
Commander US Army Environmental Hygiene
Agency ATTN: IISIIB-CI-O Aberdeen Proving
Ground, MD 21010-5422
3-3. Material Safety Data Sheets. These must be
available for each paint, solvent or other hazardous
materials used in the shop. They list any special
precautions or procedures needed, as well as first-aid
measures. You'll find additional information in the DoD
Hazardous Materials Information System Hazardous
Item Listing, DOD 6050.5-L. Disposal information is in
DOD 6050.5-L-1. Pay attention to warnings on paint
can labels.
3-4. Health Concerns. Check with your local
Preventive Medicine office, too. They can advise you
on hazards involved in painting operations and
precautions to take.
3-5. Weather for Painting. The weather conditions
when you paint are important. Painting when the
temperature is too hot or cold can be a waste of time.
The paint won't dry properly, and may peel off in a
matter of days or weeks.
You'll get the best results when you: a. Paint when the
temperature is between 60 °F and 100 °F. The ideal
temperature is 75-80 °F and a humidity of 45-50
percent.