TB 43-0242

DEPARTMENT OF THE ARMY TECHNICAL BULLETIN

WD CARC SPOT PAINTING

HEADQUARTERS, DEPARTMENT OF THE ARMY3 Dec 2007

Approved for Public Release; Distribution is Unlimited

TABLE OF CONTENTS

SECTION I. INTRODUCTIONPurpose 1-1 1Scope 1-2 1Definition of Terms 1-3 1Suggested Improvements 1-4 1General 1-5 1

SECTION II. THE WD CARC SYSTEMThe System 2-1 2Identification 2-2 2Spot Painting 2-3 2WD CARC Test 2-4 3Where Not Used 2-5 3CARC on Wood 2-6 3Painting Responsibility 2-7 4Touch-up Painting 2-8 4Camouflage Patterns 2-9 4

SECTION III. BEFORE YOU PAINTBefore You Paint 3-1 4Pubs You Need 3-2 4Material Safety Data Sheets 3-3 4Health Concerns 3-4 5Weather for Painting 3-5 5Coverage 3-6 5Curing 3-7 5

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This TB supercedes TB 43-0242, CARC Spot Painting, dated 1 Jan 1991

TB 43-0242

SECTION IV. SAFETY PRECAUTIONSSafety Needed 4-1 6Solvents 4-2 6Personal Protection 4-3 6

SECTION V. TOUCHUP STEP-BY-STEPSteps to Follow 5-1 7Surface Preparation 5-2 7Pretreatment 5-3 8WD Primer 5-4 8WD CARC 5-5 9Unused Paint 5-6 10

SECTION VI. PAINT FAILURESReasons for Failure 6-1 10What to Do 6-2 10

SECTION VII. WELDING WD CARC-PAINTED SURFACESWelding is Out 7-1 11Remove Paint 7-2 11

SECTION VIII. PAINT REMOVALStripper 8-1 11Safety 8-2 11Waste Disposal 8-3 11

SECTION IX. RESPIRATOR CARERespirator Authorized 9-1 11Training, Fitting and Testing 9-2 11Before Use 9-3 11Respirator Use 9-4 11Cartridge Changes 9-5 11Paint Pre-filter Replacement 9-6 11Filter Replacement for Sanding and Grinding Operations 9-7 11Cleaning 9-8 12Storage 9-9 12

APPENDIX A. PUBLICATION LIBRARY A-1

APPENDIX B. WD CARC SYSTEM NSNs B-1

ii

Paragraph Page

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SECTION I. INTRODUCTION

1-1. Purpose. This bulletin explains the Wa-ter Dispersible Chemical Agent Resistant Coat-ing (WD CARC) process and provides fieldmaintenance methods of spot painting using WDCARC.

1-2. Scope. This bulletin contains informationon WD CARC for field maintenance personnel.It covers the reasons WD CARC is used, appli-cation procedures, safety precautions and pro-vides NSNs for the components of the WDCARC system.

1-3. Definition of Terms. The following termswill be used throughout this TB:

a. CARC. Solvent-based Chemical AgentResistant Coating, MIL-DTL-53039. A solvent-reduced topcoat that provides a surface easilydecontaminated after exposure to liquid chemi-cal agents. This topcoat may still be used onvehicles, though it does not have touch-up kitsavailable.

b. Wash primer. A two-component or-ganic pretreatment, DOD-P-15328D (for steelor aluminum) and MIL-C-8514C (for steel oraluminum). The wash primer is applied to aclean metal surface to prepare it for a more per-manent protective primer.

c. WD Primer. A water-reducible epoxyprimer, MIL-P-53030A, MIL-DTL-53030B,MIL-DTL-53022C (white, for steel and alumi-num surfaces), or MIL-PRF-85582C (for steelor aluminum surfaces). Use Type II Class C2for aviation equipment and you can use eitherClass C2 or N for tactical ground or supportequipment. These anti-corrosive primers can beapplied to pretreated metal surfaces to promoteadhesion for either the solvent-based CARC orWD CARC topcoats.

d. WD CARC. Water Dispersible Chemi-cal Agent Resistant Coating, MIL-DTL-64159,Type I and II. A water-reduced topcoat that pro-vides a surface easily decontaminated after ex-posure to liquid chemical agents. Type I has asilica-based flattening agent. Type II uses a poly-meric flattening agent that improves its perfor-mance properties and makes it the recommendedchoice over Type I when using WD CARC.

1-4. Suggested Improvements. You can helpimprove this bulletin. If you find any mistakesor know of a way to improve the procedures,please let us know. Mail your letter or DA Form2028 to: Commander, USAMC LOGSA,AMXLS-AM, Bldg 5307, Redstone Arsenal, AL35898-5000.

1-5. General. Traditionally, Army equipmenthad been painted with solvent-based CARC con-taining high levels of Volatile Organic Com-pounds (VOC). Currently, the CARC inventoryhas only two topcoats available which offerlower VOCs and zero hazardous air pollutants(HAPs). In comparison, WD CARC has verylow VOC levels. The lower the concentrationwhich is measured in pounds per gallon (lb/gal)the safer it is for the environment and theSoldier. The current solvent-based one-compo-nent CARC (MIL-DTL-53039) has a Type Iwhich has a maximum of 3.5 lb/gal of VOC anda Type II which has 1.5 lb/gal or less of VOC.WD CARC has a VOC of only about 1.8 lb/galor less. Since the solvents used to thin CARCalso contain high concentrations of VOCs, thelb/gal concentration can actually increase. Onthe other hand, WD CARC is thinned with de-ionized water, which further reduces the VOCconcentration. WD CARC has many distinctattributes:

a. Compatibility. Since WD CARC isfully compatible with all existing CARC prim-ers and topcoats, you can use it to touch up avehicle that has been painted with CARC.

TB 43-0242

2-2. Identification. Most Army equipment ispainted with either CARC or WD CARC andshould have CARC stenciled near the dataplate.

2-3. Spot Painting. When a CARC-paintedsurface is scraped, scratched or damaged, its re-sistance to chemical agents is lessened and itbecomes susceptible to corrosion. Dependingon the location and size of the area damaged,spot painting may be required. Vehicles orequipment painted with CARC or WD CARCshould always be spot painted with CARC orWD CARC. WD CARC is fully compatiblewith all existing CARC primers and topcoatsand is preferred for spot painting. However,solvent-based CARC (MIL-DTL-53039) can beused if you still have some on hand. One thingyou should never use is a commercial off-the-shelf can of aerosol enamel or alkyd paint.Heres why:

a. These paints are not matched to fed-eral standard color chips. They quickly fade toa lighter shade that shows up clearly and canmark your vehicle as an enemy target.

b. They do not offer any signature reduc-tion capabilities such as infrared reflectivity.Again, they can leave a spot on your vehicle thatlooks remarkably similar to a bulls-eye.

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b. Flexibility. WD CARC is more flex-ible after application. That means fewer prob-lems with chipping and cracking.

c. Mar resistance. WD CARC is moredurable and doesnt scratch as easily as CARC.That means less time spot painting to fixscratches and scrapes.

d. Weather resistance. WD CARC ismuch more durable in all weather conditions.In fact, tests have shown that WD CARC canlast three to five times longer than the originalor first generation CARC ( MIL-C-46168) whichwas replaced with either MIL-DTL-53039 orMIL-DTL-64159.

e. Color stability. WD CARC resists fad-ing. So when you do have to spot paint, youwont have to worry about the colors not match-ing.

SECTION II. THE WD CARCSYSTEM

2-1. The System. The WD CARC system is acombination of pretreatments, WD primer anda WD CARC topcoat. After surface prepara-tion and pretreatment, exteriors of vehicles aretreated with a wash primer and then painted withWD primer followed by a WD CARC topcoat.

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Heres how WD CARC stacks up

Topcoat (1.8-2.5 mils)

Primer (0.8-1.5 mils)

Pretreatment (0.3-0.5 mils)

Do not use commercialspray paint on Armyvehicles

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c. These spray-on paints do not resistchemical agents. Instead, they can actually soakup the agent, making it impossible to decontami-nate the vehicle without physically removing thesprayed-on paint. Soldiers can still be exposedto chemical agents even after the vehicle is de-contaminated.

2-4. WD CARC Test. If you suspect that yourvehicle has been spot painted with a commer-cial can of aerosol enamel or alkyd paint, runthis test. Wet a cloth with acetone and rub hardon the suspected surface for 10 seconds. Wetanother clean cloth with acetone and rub againfor 10 seconds in the same spot. If no paintcomes off the second time, its either CARC orWD CARC. (The second wipe is necessary be-cause the first wipe may remove overspray.) Ifpaint comes off the second time, its the wrongstuff. Youll have to completely remove the badpaint by sanding or grinding before spot paint-ing with WD CARC.

2-5. Where Not Used. CARC is NOT to beused on fabrics, metals that have anodized orparkerized finishes (like weapons), hoses orother flexible surfaces. It should not be used onexhaust pipes, turbochargers, cooling fins or

other surfaces that conduct heat or reach tem-peratures above 400oF.

If youre not sure whether to use CARCon a particular surface, check with your Logis-tics Assistance Representative at the localUSAMC Logistics Assistance Office (LAO). Ifyou dont know where to locate your LAO, checkout DA Pam 750-8, TAMMS, Table C-2, begin-ning on Page 242. You can also access LAOoffices on the Internet at:

https://aeps.ria.army.mil/aepspublic.cfm

Click on AMC LSE OFFICES under Pub-lic Applications. That takes you to a locator webpage displaying LAO regions on a flattenedglobe. Click on the region you want and youllget a map of the region and where LAOs arelocated. Click on the location you want to getthe email address for that office.

2-6. CARC on Wood. Neither CARC nor WDCARC lasts well on wood. Wood expands andcontracts with weather changes but CARC/WDCARC wont. Its not flexible enough to movewith the wood, so it cracks and peels off.

Keep WD CARC awayfrom rubber hoses. . .

Do not use WD CARC on woodenitems such as chock blocks

... and exhaust pipes

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Follow the good words in Para 3-5e of TM43-0139, Painting Instructions for Army Mate-riel, to protect wood.

2-7. Painting Responsibility. The word onwho uses WD CARC is found in Para 8-9 ofAR 750-1, Army Material Maintenance Policy.Complete repainting may be done at both Fieldand Sustainment levels as long as an Occupa-tional Safety and Health Administration (OSHA)approved facility is available. Vehicles may becompletely repainted when 25 percent or moreof the total vehicle area is deemed unservice-able by supervisory maintenance personnel.Painting at Field level using a brush or roller islimited to touchup painting, which includes re-storing painted surfaces after repair.

2-8. Touch-up Painting. Touch-up painting isdone to prevent corrosion, not for purely cos-metic reasons. If the paint is marred, but notdeep enough to see bare metal, you do not needto paint.

2-9. Camouflage Patterns. The Army uses athree-color camouflage pattern for equipmentused in wooded and other green-vegetated ar-eas and in some arctic or partially snow-cov-ered areas. Single colors are used for desert andtotally snow-covered areas. When youre touch-ing up a camouflaged surface, try to repaint us-ing the original camouflage pattern. That pat-tern was designed to best camouflage the equip-ment.

SECTION III. BEFORE YOUPAINT

3-1. Before You Paint. Theres more to usingWD CARC (or any other paint) than grabbing abrush, a can of paint and getting to work. Poorpreparation results in a poor paint job that maysoon have to be redone.

3-2. Pubs You Need. There are several publi-

cations that will come in handy as referencesfor painting operations and safety:

a. TM 43-0139, Painting Instructions forArmy Materiel. This manual discusses paintingoperations, procedures for marking and camou-flaging equipment, and methods of applying dif-ferent types of paint.

b. TB 43-0209, Color, Marking, andCamouflage Painting of Military Vehicles, Con-struction Equipment and Materials HandlingEquipment. This bulletin covers vehicle safetyand technical markings, safety information fordealing with all types of paint, and camouflagepatterns.

c. TB MED 502, Occupational and En-vironmental Health Respiratory Protection Pro-gram. This publication contains information onrespirators, including training, face-fitting, leak-testing and maintenance procedures.

d. Other helpful publications can be foundlisted in Appendix A.

3-3. Material Safety Data Sheets (MSDS).An MSDS should be prepared by the manufac-turer and accompany each single shipment or

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batch of wash primer, WD primer or WD CARC.It is very important that anyone working withthese substances read and be familiar with thespecial precautions or procedures needed, as wellas first-aid measures. Along with the productsingredients and specific protection information,the MSDS will contain:

a. Reactivity Data. This tells about thestability, hazardous decomposition, and otherproperties of the substance.

b. Spill and Disposal Procedures. Thistells you what steps have to be taken in the eventof an accidental spill and how to dispose of left-over product.

c. Fire and Explosion Hazard Data. Thisprovides the flash point of the product, specialfire fighting procedures, and what type of fireextinguisher may be required.

d. Health Hazards. This makes you awareof any emergency or first-aid procedures re-quired if the product is inhaled or comes in con-tact with your skin or eyes.

3-4. Health Concerns. Check with your localsafety office and medical support facility. Theycan advise you on the hazards involved in paint-ing operations and proper precautions to take.

3-5. Weather for Painting. Weather condi-tions when you paint are important. Paintingwhen temperatures are too hot or cold greatlyaffect the cure time. The paint may not dry prop-erly and probably will not last. Youll get thebest results when you:

a. Try to paint when the temperature is be-tween 60oF and 90oF. The ideal temperature is70oF with a humidity of 45-50 percent. You canpaint with WD CARC when the temperature andhumidity are more or less than the ideal, but curetime will be affected. Cure time increases with

low temperaturesand high humidity.At 70oF, it takesabout one week for acomplete cure,though the vehiclecan be handled in afew hours. Good,proper ventilationwill also assist indrying when humid-ity is high (greaterthan 70%). Highertemperatures andlower humidity will reduce cure times for WDCARC.

b. Paint in the shade, on overcast days, orin the evening hours to avoid direct sunlight.

3-6. Coverage. The wash primer, WD primerand WD CARC are two-component compounds.Be sure that you mix the components in theproper proportion. Using the wrong proportionwont make the compound dry quicker or pro-duce a better coating. In fact, you may end upwith paint that peels right off. Take a look atSection V for mixing instructions. A quart ofWD CARC topcoat or WD primer will coverabout 100 square feet.

3-7. Curing. Once you mix the two compo-nents of the wash primer, WD primer or WDCARC topcoat, they start to hardencureandnothing can stop it.

Idealpaintingtemp

120 110

-40-20

020406080

100

-30-10103050

90

oF

70

1 quart 10 feet

10 feet

WD CARC(MIL-DTL-64159)

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a. Wash primer. MIL-C-8514 will lastabout four hours before hardening. You haveabout eight hours to use DOD-P-15328.

b. WD primer. You have about six hoursto use MIL-DTL-53030B WD primer and MIL-DTL-53022C solvent-based primer. Youll havefour hours to use MIL-PRF-85582C WD primer.

c. WD CARC. Both Type I and Type IIWD CARC begins to harden four hours aftermixing.

SECTION IV. SAFETYPRECAUTIONS

4-1. Safety Needed. Just like most things youdo during the course of any day in the motorpool, there are certain safety procedures that youhave to follow when painting. For most touchuppainting, you need to take a few commonsenseprecautions.

4-2. Solvents. The concentration of solventsin WD CARC is much lower than in CARC,but it does still contain solvents. These solventsare potentially flammable, so never paint aroundopen flames or where there are sparks, like fromsomeone welding.

4-3. Personal Protection. Although WDCARC is water-based, the personal protectiveequipment required during spray and brush ap-plication remains the same as for CARC. Bothcontain solvents, so youll need plenty of venti-lation. If possible, paint outside, but out of thedirect sun. If you must paint inside a building,paint in a bay with doors open on each end. Yourlocal industrial hygienist can measure the air-flow to see if you have adequate ventilation.Then make sure you have the following protec-tive equipment:

a. Respirator. A respiratornot just adust maskis always required when spray paint-

ing with WD CARC. When spot painting witha brush or roller, however, you may or may notneed a respirator, depending on the conditionsand location. Contact your local occupationalsafety and health office to perform an air sampleevaluation of your work area. If a respirator isrequired, theyll do a baseline medical evalua-tion, fit-test you for the proper respirator andtrain you in its use. Let them know if any sand-ing or grinding of old paint will be done. A dif-ferent type of respirator may be required to fil-ter out dust.

b. Gloves. Wear silicone rubber glovesthat will keep the paint off of your hands. Sol-

vents in the paintcan be absorbedthrough your skin,and make your

hands dry andcracked. Some sol-vents and otherCARC componentscan make you sick,

too. Besides, WD CARC that dries on your skinwont come off easily. Youll have to scrub withsoap and water to remove it.

c. Face Protection. Use a face shield orsplash goggles to keep paint off your face andout of your eyes, especiallywhen mixing. Youll needthe shield or goggles to pro-tect your eyes if you use apower sander or grinder toprepare thesurface, too.

Respirator may be needed while spot painting

Rubber glovesprotect hands

Protect eyes withface shield

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d. Clothing. Wear clothing that covers allof your skin. Coveralls work well. Keep sleevesrolled completely down. When sanding andgrinding, wear coveralls that are disposable orthat stay at work. This helps to prevent any con-taminants in paint dust from being carried homeon clothing.

e. Hearing Protection. Normally you willnot need hearing protection when you paint.

However, you will needearplugs or noise muffsif you use a powersander or grinder to re-move old paint and rust.The folks from your lo-cal occupational safety

and health office can tell you the right hearingprotection to use.

Section V. TOUCHUP STEP-BY-STEP

5-1. Steps to Follow. There are a number ofsteps to follow when you spot paint with the WDCARC system. If you skip a step or take a short-cut, youll end up with a coating that peels eas-ily or one that bubbles up and falls off.

5-2. Surface Preparation. Surface preparationis important. If you skip it, or skimp on it, thepaint wont stick to the surface. You can applyWD CARC over CARC, but the old topcoatmust be clean, sound, and tightly bonded to the

surface. Inspect the surface to be spot paintedand follow these steps:

a. Sanding. If the topcoat is merelyscratched, lightly scuff sand the blemished area.Damage that exposes bare metal often involvesrust. You must remove all traces of rust by sand-ing or with an orbital grinder. The surface im-mediately surrounding the exposed metal shouldthen be sanded, using a feathering-in technique.In other words, the thickness of the film shouldbe smoothly tapered starting from the center andgoing from bare metal, to primer, to topcoat.Clean up any dust or paint particles with a wet/dry HEPA vacuum, wet wipes, or sweep up us-ing a sweeping compound to supress dust.

b. Cleaning. Wash the surface thoroughlywith a solution of liquid detergent, NSN 7930-

Use ear plugs whensanding or grinding

Wash with detergentand water solution

Original topcoat

Originalprimer

Bare metal

Taper old paint and primeredges down to bare metal

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00-282-9699, and water. You must remove allloose sanding debris, grease, oil (including fin-gerprints), and fuel residue to ensure the WDprimer and WD CARC will properly stick to thesurface. Rinse completely with clean water andlet the area dry. Crevices and seams will takelonger to dry, so make sure all moisture is gonebefore continuing. Be very careful to keep thesurface free of dirt, dust, fingerprints and othercontaminants after cleaning.

5-3. Pretreatment. If the old paint is soundand you didnt have to sand to bare metal, youdont need the pretreatment and WD primer, soyou can skip to Para 5-5. Otherwise, immedi-ately coat all bare metal surfaces with a coat ofwash primer (DOD-P-15328 for steel surfacesor MIL-C-8514 for aluminum surfaces). Thewash primer protects the surface and will helpthe WD primer bond to it. A sponge gives bet-ter control for this application.

5-4. WD Primer. After the pretreatment coat-ing is dryat least 30 minutes, but no more than

24 hoursapply a coat of WD primer.

a. Mixing. Mixing instructions for WDprimer will depend on the type used.

(1) MIL-DTL-53030A. This epoxyprimer is intended for steel or aluminum sur-faces and consists of two components. Compo-nent A is a pigmented polyamide while compo-nent B is a clear epoxy. Stir component A untilit is uniform in texture. Then mix one part ofcomponent B with three parts of component A.Stir until the mixture is smooth. Thin the WDprimer with deionized water. NSN 6810-01-075-0618 brings a 4-oz bottle and NSN 6550-01-370-7494 gets a 5-gal bottle. You can alsouse distilled water. Follow the manufacturersinstructions on how much water can be safelyadded. Once mixed, allow the WD primer tostand for 30 minutes before use. The WD primerwill harden in about six hours, so only mix upwhat you need.

(2) MIL-DTL-53022C. This epoxyprimer is intended for steel or aluminum sur-faces and consists of two components. Compo-nent A is a pigmented polyamide while compo-nent B is a clear epoxy. Stir component A untilit is uniform in texture. Then mix one part ofcomponent B with four parts of component A.Stir until the mixture is smooth. Follow themanufacturers instructions on how much sol-vent can be safely added, if needed. Once mixed,allow the primer to stand for 30 minutes beforeuse. The primer will be ready to paint within 30minutes or when the solvents have flashed off.

Newtopcoat New

primer

Bare metal

Brush on primer, then topcoat

Sponge on pretreatment

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Two hours is an ideal time to properly allow thesolvents to flash off and the primer to cure. Onlymix up what you need since it has a pot life ofsix to eight hours.

(3) MIL-PRF-85582C. This epoxyprimer is intended for aluminum and steel sur-faces. Use type II, Class C2, for aviation equip-ment and you can use either Class C2 or N fortactical ground or support equipment. It consistsof two components. Component A is a pig-mented epoxy resin solution while componentB is the curing agent. Mix the two componentsin the proportion specified by the manufacturer.Thin the WD primer with deionized or distilledwater. Follow the manufacturers instructions onhow much water can be safely added. Oncemixed, allow the WD primer to stand for 30minutes before use. The WD primer will hardenin about four hours, so only mix up what youneed.

b. Application. Use a paint brush to ap-ply the WD primer. The coating should be 1.0to 1.5 mils for MIL-P-53030A and 0.8 to 1.2mils for MIL-PRF-85582C. After application,the WD primer will dry hard in about five to sixhours. High humidity and low temperatures willslow the drying process.

5-5. WD CARC. Once the WD primer is dry,its time to apply the WD CARC topcoat. WDCARC is available in bulk kits or self-containedtouch-up kits. Select the WD CARC applica-tion that best fits your situation. All of the fol-

lowing information applies to both Type I andType II WD CARC. The kits are approved andrecognized as Type III for MIL-DTL-64159.Efforts are ongoing to include touch up kits forMIL-DTL-53039 solvent-based CARC. How-ever, touch up kits are currently available onlyfor the WD-CARC version.

a. Bulk kits. These kits are available insizes of 3 pints, 3 quarts, 3 gallons and 15 gal-lons. See Pages B-2 through B-4 for orderinginformation.

(1) Mixing. WD CARC comes in two-component kits that have to be mixed before use.Component A is a hydroxyl functional polyure-thane that includes pigments, additives and sol-vents. Component B is an aliphatic isocyanateprepolymer. The mixing ratio is two parts ofcomponent A to one part of component B. Oncethe two components are thoroughly mixed, youcan thin the paint by adding deionized water.

Follow the manu-facturers recom-mendation onhow much watercan be safelyadded. Be care-ful not to over-thin with watersince that willmake the paintunusable. Again,

Bulk kits must beproperly mixed

Brush on primer...

...then apply topcoat

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you must thoroughly mix the paint to ensure thewater and both components are completelyblended.

(2) Application. Use a paint brush orroller to apply the WD CARC to a thickness of1.8 to 2.5 mils. Cure time will increase withlow temperatures and high humidity, and de-crease with higher temperatures and low humid-ity. At an optimum temperature of 70oF, Type IWD CARC will dry to touch in approximately50 minutes, dry hard in four hours, dry throughin five hours, and completely cure within sevendays. Type II WD CARC will dry to touch inapproximately 60 minutes, dry hard in six hours,dry through in eight hours, and completely curewithin seven days.

b. Touch-up Kits. Army Research Labshas tested and validated self-contained touch-up kits for use where touch-up or stenciling areneeded. These kits are available as an aerosolor as a non-aerosol with a sponge roller or brushapplicator. An identical color match with touchup kits is not required. Colors that are lighter or

darker are acceptable so long as qualified prod-ucts are being used. See Pages B-5 through B-7for ordering information. Follow themanufacturers instructions for use.

5-6. Unused Paint. Treat any leftover washprimer, WD primer or WD CARC as hazardous

waste. If it hashardened, seal itand dispose of itproperly. Yourunits SOPshould address

how to handlehazardous waste.You can also find

disposal information in the Material Safety DataSheets or at your local Environmental Office.

SECTION VI. PAINT FAILURES

6-1. Reasons for Failure. There are a numberof reasons why CARC, WD CARC, or any otherpaint fails soon after application. Some reasonsare:

a. The surface was improperly prepared.There was loose or blistered paint, sanding dust,grease or oil, diesel fuel, or fingerprints on thesurface. Or it could be that lacquer used previ-ously was not removed.

b. No pretreatment or primer was used.The topcoat was applied directly to bare metal.

c. The primer did not have time to dryproperly before the topcoat was applied.

d. The surface was too hot or cold. Thepaint didnt have a chance to cure properly.

6-2. What to Do. With most paint failures, theonly sure cure is to strip it down to bare metaland start over. It takes a lot longer to do it over,so your best bet is to do it right the first time.

WD CARC now available in spray,roller and brush applications

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SECTION VII. WELDING WDCARC-PAINTED SURFACES

7-1. Welding is Out. Never weld or use a cut-ting torch on CARC- or WD CARC-painted ma-terial. Welding or cutting painted surfaces re-leases toxic gases, vapors and metal fumes.

7-2. Remove Paint. Before applying any heat,sand or grind off the paint down to bare metalon an area at least four inches on either side ofwhere you plan to apply heat. If the other sideof the metal is painted, remove the paint there,too.

SECTION VIII. WD CARCREMOVAL

8-1. Stripper. There are times you need to re-move CARC from a surface that cant bescratched or scored, such as cannon mounts oraircraft surfaces. You cant use sandblasting orsanding. Instead, use epoxy and polyurethanepaint remover. See Page B-1 for ordering infor-mation.

8-2. Safety. Read the warning label on thestripper and take all the precautions called for.The Material Safety Data Sheet will have addi-tional information. Your Preventive Medicinefolks can help, too.

8-3. Waste Disposal. Be sure to check withyour local environmental office for guidance ondisposing of the used stripper.

SECTION IX, RESPIRATOR CARE

9-1. Respirator Authorized. Under some con-ditions you may need to wear a respirator. Ifyou are issued a respirator, follow the instruc-tions of the manufacturer and the issuing office(safety or medical support facility). Remember,your gas mask is not a substitute for a commer-

cial, NIOSH-approved respirator.

9-2. Training, Fitting and Testing. Your lo-cal safety office or medical support facility willfit you for a respirator and be sure you have thecorrect type. They will also teach you how touse it and to check for leaks before each use.

9-3. Before Use. Never alter or modify yourrespirator. Be sure you follow themanufacturers instructions for use and wear.Look for tears or other damage that would pre-vent a positive seal. When you first put the res-pirator on, do the positive pressure and nega-tive pressure tests called for in Para 2-7b(4) ofTB MED 502. If you cant get a good seal, dontpaint.

9-4. Respirator Use. Use your air purifyingrespirator (APR) only in well-ventilated areaswhere plenty of oxygen is available. Otherwise,you may pass out. Leave the area immediatelyif breathing becomes difficult, if you get dizzyor if you taste or smell paint.

9-5. Cartridge Changes. Replace the filter andthe cartridge in your respirator according to thechange-out schedule determined by health andsafety personnel at your facility or at the firstsign of paint odor while youre wearing it. Leavethe painting area before removing the respira-tor. Then, unscrew the cartridge to replace it.Be sure the rubber gasket is evenly seated in thefilter holder when you put in the new cartridge.

9-6. Paint Pre-filter Replacement. Replacethe pre-filter when breathing becomes difficult.Remove the filter retaining ring from the frontof the cartridge. Put the replacement filter inthe retainer and replace the entire assembly onthe cartridge front.

9-7. Filter Replacement for Sanding andGrinding Operations. Replace the filter car-tridges for sanding and grinding operations ac-

TB 43-0242

cording to the schedule established by yoursafety and health office or when breathingthrough the filters becomes difficult.

9-8. Cleaning. Clean and sanitize your respi-rator after each day's use by following the respi-rator manufacturer's instructions or consultsafety and health personnel for proper cleaningprocedures. Before using the respirator, be sureto check it for leaks.

Head strap assembly (upperand lower straps with yoke)

Cartridge Pre-filter

Cartridge containerCartridgeholder

Inhalationvalve

Exhalationvalve seatand cover

9-9. Storage. Before storing your respirator,make sure its clean and dry. Store the respira-tor in a clean plastic bag labeled with your nameand the date it was cleaned. Make sure that youstore the respirator in a cool, dry area free ofairborne contamination. Do not put it in yourlocker unless it is in a container or carton. Besure to check the respirator again before usingit.

12

TB 43-0242

A-1

APPENDIX APUBLICATION LIBRARY

Heres a list of publications and specifications needed for painting operations at various main-tenance levels.

PublicationTM 43-0139

TM 55-1500-345-23

TB MED 502

TB 43-0118

TB 43-0144

TB 43-0147

TB 43-0209

TB 746-95-1

TB 750-10

MIL-C-53072

MIL-T-704

MIL-STD-171

MIL-STD-186

MIL-STD-193

MIL-STD-194

TitlePainting Instructions for Army Materiel

Painting and Marking of Army Aircraft

Occupational and Environmental Health Respiratory ProtectionProgram

Field Instructions for Painting and Preserving ElectronicsCommand Equipment

Painting of Watercraft

Color, Marking and Camouflage Patterns used on MilitaryEquipment

Color and Marking of Military Vehicles, Construction Equipmentand Materials Handling Equipment

Color, Marking and Camouflage Pattern Painting for ArmamentCommand Equipment

Painting, Replating and Preserving Instructions forCommunications Security Equipment

Chemical Agent Resistant Coating (CARC) System ApplicationProcedures and Quality Control Inspection

Treatment and Painting of Materiel

Finishing of Wood and Metal Surfaces

Protective Finishing for Army Missile Weapon Systems

Paint Procedures and Marking for Vehicles, ConstructionEquipment and Material Handling Equipment

System for Painting and Finishing Fire-Control Material

TB 43-0242

A-2

MIL-STD-642

MIL-STD-1473

MIL-DTL-53039

MIL-DTL-64159

MIL-DTL-53022C

Identification Marking of Combat and Tactical Transport Vehicles

Standard General Requirements for Color and Marking of ArmyMateriel

Coating, Aliphatic Polyurethane, Single Component, ChemicalAgent Resistant

Coating, Water Dispersible Aliphatic Polyurethane, ChemicalAgent Resistant

Primer, Epoxy Coating, Corrosion Inhibiting Lead And ChromateFree

Use the ASSIST-Quick Search database to gain direct access to Defense andFederal specifications and standards available. Go to:

http://assist.daps.dla.mil/quicksearch/

Just enter the specification you need in the Document ID block and clickSubmit.

TB 43-0242

B-1

APPENDIX BWD CARC SYSTEM NSNs

Here are the NSNs for commonly-used quantities of wash primer, WD primers, strippers, andWD CARC topcoats used with the WD CARC system:

NSN 8010-00-

142-9273

181-7568

926-1488

926-1489

Quantity

1 Pt

1 Gal

5 Gal

55 Gal

Stripper

NSN 8030-00-

850-7076

281-2726

165-8577

Kit Size

1-qt

1-gal

5-gal

Wash Primer, DOD-P-15328(for aluminum surfaces)

NSN 8030-

01-015-6104

00-082-2425

Kit Size

1-gal

5-gal

Wash Primer, MIL-C-8514(for steel surfaces)

Specification

MIL-P-53030A

MIL-P-53030A

MIL-P-53030A

MIL-PRF-85582C

MIL-PRF-85582C

MIL-DTL-53022, Type 1

MIL-DTL-53022, Type 1

MIL-DTL-53022, Type 2

MIL-DTL-53022, Type 2

MIL-DTL-53022, Type 2

MIL-DTL-53022, Type 2

Color

White

White

White

Light green

Light green

White

White

White

White

White

White

WD Primer

Size

1 1/4-qt

1 1/4-gal

5-gal

1-qt

1-gal

1 1/4-qt

1 1/4-gal

1 1/4-qt

1 1/4-gal

4-gal

5-gal

NSN 8010-01-

193-0519

193-0520

193-0521

218-0856

218-7354

193-0516

193-0517

309-0328

309-0329

368-6249

309-0327

TB 43-0242

B-2

Color

Green

Brown

Tan

Black

Black

Aircraft green

Aircraft gray

Fed Std No.

34094

30051

33446

37030

37038

34031

36300

WD CARC Topcoat, Type IKit Size

3-pt

3-qt

3-gal

15-gal

3-pt

3-qt

3-gal

15-gal

3-pt

3-qt

3-gal

15-gal

3-pt

3-qt

3-gal

15-gal

3-pt

3-qt

3-gal

15-gal

3-pt

3-qt

3-gal

15-gal

3-pt

3-qt

3-gal

15-gal

NSN 8010-01-

492-6637

492-6638

492-6639

492-6640

492-6641

492-6642

492-6643

492-6644

492-6645

492-6646

492-6648

492-6649

492-6650

492-6651

492-6652

492-6654

545-1815

545-1817

545-1818

545-1820

492-6655

492-6656

492-6657

492-6658

492-6659

492-6660

492-6661

492-6663

TB 43-0242

B-3

Color

Green

Brown

Tan

Black

Black

Aircraft green

Aircraft gray

Fed Std No.

34094

30051

33446

37030

37038

34031

36300

WD CARC Topcoat, Type IIKit Size

3-pt

3-qt

3-gal

15-gal

3-pt

3-qt

3-gal

15-gal

3-pt

3-qt

3-gal

15-gal

3-pt

3-qt

3-gal

15-gal

3-pt

3-qt

3-gal

15-gal

3-pt

3-qt

3-gal

15-gal

3-pt

3-qt

3-gal

15-gal

NSN 8010-01-

493-3168

493-3169

493-3170

493-3171

493-3172

493-3173

493-3174

493-3175

493-3176

493-3177

493-3179

493-3180

493-3182

493-3183

493-3190

493-3191

545-1944

545-1947

545-1949

545-1955

493-3192

493-3193

493-3194

493-3195

493-3196

493-3197

493-3198

493-3199

TB 43-0242

B-4

Color

Red

Yellow

Olive drab

Blue

White

Sand

Fed Std No.

31136

33538

34088

35044

37875

33303

WD CARC Topcoat, Type IIKit Size

3-pt

3-qt

3-gal

15-gal

3-pt

3-qt

3-gal

15-gal

3-pt

3-qt

3-gal

15-gal

3-pt

3-qt

3-gal

15-gal

3-pt

3-qt

3-gal

15-gal

3-pt

3-qt

3-gal

15-gal

NSN 8010-01-

545-1823

545-1825

545-1826

545-1835

545-1836

545-1838

545-1840

545-1841

545-1842

545-1843

545-1844

545-1845

545-1938

545-1939

545-1941

545-1942

545-1956

545-1957

545-1958

545-1959

545-1960

545-1961

545-2016

545-2035

TB 43-0242

B-5

WD CARC Topcoat,Aerosol Spray, Type II

Color

Green

Tan

Black

Brown

Sand

Yellow

Olive drab

Gray

Gray

White

Aircraft green

Green

Brown

Black

Fed Std #

34094

33446

37030

30051

33303

33538

34088

36231

36300

37875

34031

34094

30051

37030

Quantity

Box of 12

Box of 12

Box of 12

Box of 12

Box of 12

Box of 12

Box of 12

Box of 12

Box of 12

Box of 12

Box of 12

Box of 12

(4 of each

color)

NSN 8010-01-

546-7712

546-7711

546-7713

546-7709

547-1917

547-1919

547-1920

547-1921

547-1922

547-1923

553-5824

546-8093

TB 43-0242

B-6

WD CARC Topcoat,Brush-top Applicator, Type II

Color

Green

Tan

Black

Brown

Aircraft red

Aircraft

insignia blue

Sand

Yellow

Olive drab

Gray

Gray

White

Green

Brown

Black

Fed Std #

34094

33446

37030

30051

31136

35044

33303

33538

34088

36231

36300

37875

34094

30051

37030

Quantity

Box of 12

Box of 12

Box of 12

Box of 12

Box of 12

Box of 12

Box of 12

Box of 12

Box of 12

Box of 12

Box of 12

Box of 12

Box of 12

(4 of each

color)

NSN 8010-01-

546-7585

546-7587

546-7588

546-7589

546-7591

546-7592

547-1876

547-1878

547-1880

547-1882

547-1884

547-1888

546-7590

TB 43-0242

B-7

WD CARC Topcoat,Roller-top Applicator, Type II

Color

Green

Tan

Black

Brown

Aircraft red

Aircraft

insignia blue

Aircraft white

Aircraft yellow

Sand

Olive drab

Gray

Gray

Aircraft green

Green

Brown

Black

Fed Std #

34094

33446

37030

30051

31136

35044

37875

33538

33303

34088

36231

36300

34031

34094

30051

37030

Quantity

Box of 12

Box of 12

Box of 12

Box of 12

Box of 12

Box of 12

Box of 12

Box of 12

Box of 12

Box of 12

Box of 12

Box of 12

Box of 12

Box of 12

(4 of each

color)

NSN 8010-01-

546-7593

546-7594

546-7596

546-7595

546-7598

546-7599

546-7699

546-7700

547-1906

547-1908

547-1910

547-1913

553-5822

546-7597

Notes

By Order of the Secretary of the Army:

Official:

GEORGE W. CASEY, JR.General, United States Army

Chief of Staff

JOYCE E. MORROWAdministrative Assistant to the

Secretary of the Army0708801

PIN 084390-000

TABLE OF CONTENTSSECTIONSSECTION ISECTION IISECTION IIISECTION IVSECTION VSECTION VISECTION VIISECTION VIII

PARAGRAPHSPARA 1-1PARA 1-2PARA 1-3PARA 1-4PARA 1-5PARA 2-1PARA 2-2PARA 2-3PARA 2-4PARA 2-5PARA 2-6PARA 2-7PARA 2-8PARA 2-9PARA 3-1PARA 3-2PARA 3-3PARA 3-4PARA 3-5PARA 3-6PARA 3-7PARA 4-1PARA 4-2PARA 4-3PARA 5-1PARA 5-2PARA 5-3PARA 5-4PARA 5-5PARA 5-6PARA 6-1PARA 6-2PARA 7-1PARA 7-2PARA 8-1PARA 8-2PARA 8-3PARA 9-1PARA 9-2PARA 9-3PARA 9-4PARA 9-5PARA 9-6PARA 9-7PARA 9-8PARA 9-9

APPENDIXESAPPENDIX AAPPENDIX B

PAGESPAGE 1PAGE 2PAGE 3PAGE 4PAGE 5PAGE 6PAGE 7PAGE 8PAGE 9PAGE 10PAGE 11PAGE 12PAGE A-1PAGE B-1PAGE B-2PAGE B-4PAGE B-5PAGE B-7