Issue 609 TB 43-PS-609 Approved for Public Release; Distribution is Unlimited August 2003 I've been assigned to y'gotta the arms room. I don't help take it know anything about me!! easy. Just arms maintenance… I'm a supply clerk… the facts, I've never done this—! soldier. just the facts. PM Dragnet See page 27 TB 43-PS-609, The Preventive Maintenance Monthly, is an official pub- lication of the Department of the Army, providing information for all soldiers assigned to combat and combat support units and all soldiers with unit maintenance and supply duties. All information published has been reviewed and approved by the agency responsible for the equip- ment, publication or policy discussed. Application of the information is optional with the user. Masculine pronouns may refer to both genders. The Best offense ISSUE609 AUGUST2003 is a good defense! WHEELED VEHICLES 2 COMBAT ENGINEERING 24 M1000 HET Semitrailer Loading Caution 2-3 22-Ton Crane Fuel Tank Caution 24 M1070 HET, M1075 PLS Windshield Washer 2-3 22-Ton Crane Cooling Fan Bolts 25-26 M1070 HET Tractor 4-Way Control Valve 4 LRT-110 Crane Brake Fluid Reservoir 26 FMTV Winch Cable Retraction 4 LRT-110 Crane Winch Cable 26 FMTV Engine Oil Pressure 5 AVIATION 35 HMMWV AOAP Sampling 6 Trailer Brake Air Hose Hookups 7 Aviator’s Boot Info 35 HEMTT Fuel-Water Separator Bowl 8 CH-47D Corrosion Prevention 36-37 HEMTTStatic Reel 8 AH-64 Fungus and Mildew Removal 38-39 M915A4 Tractor Truck Spare Fuses 9 OH-58D Engine Barrier Filters 40-41 COMBATVEHICLES 10 COMMUNICATIONS 42 Combat Identification Panels CDs 10-11 FHMX Circuit Card Assemblies 42 MLRS Carrier Battery Tie-down Bolt 12 AN/TSC-154 Generator Batteries 43 MLRS Carrier Steering Cable 13 OE-254/GRC Antenna NSNs 44 M113A3 FOV Towbar NSNs 14-15 3-KW TQG Fuel Hoses 45 Allied Kinetic Energy Recovery Rope 14-15 EPLRS High-Pressure Washing Caution 46-47 M88A2 Hercules Towing Tips 16 M109-Series SP Howitzer, M992A2 Ammo NBC 48 Carrier Sprockets 17 ACADA Exhaust Valve Tip Replacement 48-49 MISSILES 18 M40/M42-Series Mask Headharnesses 49 M40/M42-Series Mask Inserts and Outserts 50 Patriot Missile System Generator PM 18 M40-Series Mask Headharness Fitting 51 S MLRS Launcher Carbon Build-up Prevention 19 uccessful sports teams are fond of saying that “the We have the Avenger Missile System M3P Gauge NSNs 19 SOLDIER SUPPORT 52 best offense is a good defense”. world’s best That translates to winning on another field—the bat- takeeq ucipamree not.f. .it! SMALL ARMS 20 Canvas Tent Pin Angles 52 Repair Tape for Polyester Tents and Tarps 53 tlefield:If the enemy can’t beat your defense,he’s not d-e-f-e-n-s-e! M16-Series Rifle Magazine Maintenance 20 Flammable Storage Cabinets 54-55 going to win any battles. M16-Series Rifle, M4/M4A1 Carbine Desert PM 21 HAZMAT Spill Kits 56-57 M16A4 Rifle Differences 22 How do your toughen up your defense for the battle- M249 Machine Gun AN/PVS-4 Mounting 23 LOGISTICS MANAGEMENT 58 field? By preventive maintenance on your equipment. M68 Optical Sight 23 Priority Requisition Abuse 58-59 While military tactics deploy soldiers and equipment as situations demand or where advantage can be You are invited to send PSyour ideas for improving maintenance proce- By order of the Secretary of the Army: dures, questions on maintenance and supply problems and questions or JOHNM.KEANE gained,it is the condition of equipment that holds the comments on material published in PS. General, United States Army line and helps carry the day. Just write to: Acting Chief of Staff MSG Half-Mast Would you stake your life right now on the condition PS, the Preventive Maintenance Monthly Official: USAMC LOGSA (AMXLS-AM) of your equipment? 5307 Sparkman Circle JOEL B. HUDSON Redstone Arsenal, AL 35898-5000 Administrative Assistant to If there’s any doubt, get out the maintenance pubs Or e-mail to: [email protected] the Secretary of the Army Internet address:http://www.logsa.army.mil/psmag/pshome.html 0317402 and get to work. Just as ball players like their chances PS, The Preventive Maintenance Monthly(ISSN 0475-2953) is published monthly by the Department of the Army, Redstone when the defense is working, our chances improve Arsenal, AL 35898-5000. Periodical postage is paid at the Huntsville, AL post office and at additional mailing offices. tremendously when your defense is PM. Postmaster:Send address changes to PS, The Preventive Maintenance Monthly, USAMC LOGSA (AMXLS-AM), 5307 Sparkman Circle, Redstone Arsenal, AL 35898-5000. M1000 HET Semitrailer… Avoid Crooked Loading T he M1000 heavy equipment transport semitrailer is a rugged beast. But it’ll meet its match if you try to load a tracked vehicle improperly. wait!! Wait!! BACK UP …or I'll Some drivers try to drive onto the I'm a little AND TRY it ruin the bit crooked! again… ramp! semitrailer without first making sure Shifting their vehicles are perfectly straight. load can Once on the ramp,it becomes obvi- bend ous that the vehicle is crooked, so ramp they try to straighten out before driv- ing the rest of the way up. Unfortunately,the torque generat- ed by the tracks and the sudden shift in weight is often enough to bend and weaken the ramp. So make sure your vehicle is com- pletely straight with the semitrailer before loading. If it goes on slightly crooked,back up and try again. M1070 HET and M1075 PLS… Windshield Washer a dirty wind- A clean windshield makes Make a note of these how can you shield could driving easier and safer down parts for the possibly see What are lead to the for you HET, pls, and hemtt washer reservoir, ‘cause through that you, my mother of all drivers. That means the they’re missing from Reservoir Parts windshield?!! MOTHER? accidents! vehicle’s windshield washer Fig 227 of tm 9-2320- I can see has to be in working order. 360-24P and Fig 437 of fine! tm 9-2320-364-24P. Part NSN Windshield washer assembly 2540-01-288-5298 Reservoir, windshield washer 2540-01-287-4550 Cover, reservoir/windshield washer 2540-01-210-9638 Grommet, nonmetallic 5325-01-353-9602 Valve, plug 4820-01-355-0380 Tubing, nonmetallic 4720-01-393-4541 Diaphragm chamber assembly 2540-00-114-4180 Pump, windshield washer 2540-01-287-4546 By the way, this windshield washer is inter- changeable with the one that’s used on the HEmtT. PS 609 AUG03 3 FMTV… FMTV… what’s Engine Oil Pressure the winch cable buggin’ broke my mhe you? control sending units! A little hey! the engine ah, that’s later… oil pressure no big gauge’s in the red deal. We but the low oil can keep pressure indicator going! is not lit! O perators, here’s a sure-fire way to stop damage to the material-handling equip- ment controls on FMTVs. no Retract cable slowlyto avoid big It’s simple. Do not reel in the deal, winch cable at full speed! Left breaking sending unit huh? loose, the cable can whip—move sideways—with a lot of force. The MHE controls are in the way and unprotected. The whip- ping cable breaks off sending units. D rivers,the FMTV’s normal engine oil pressure is between 15-80 PSI. In addition Prevent damage by simply to an oil pressure gauge,your truck also has an oil pressure warning light. bringing in the cable slowly. Do the following if the gauge or the light should indicate problems: M1070 HET Tractor… • If the engine low oil pressure indicator is lit and the gauge reads above 15 PSI, continue the mission. When the mission’s over,tell your mechanic. 4-Way • If the engine oil pressure gauge reads in the red zone and the low oil pressure indicator is lit,shut off the engine and call in your mechanic. • If the engine oil pressure gauge reads in the red zone and the engine low oil pres- Control Pin kit, sure indicator is not lit,shut off the engine and do the following: NSN5315-01-164-5342 1)Restart the engine. The light should come on briefly,but then go out. Continue Valve the mission. 2)If the light does not come on,or comes on and stays on,turn off the engine and call in your mechanic. B oth NSNs for the handle Keep needle assembly’s mounting bracket out of red and pin kit are missing from the 4-way control valve Mounting bracket, shown in Fig 222 of TM 9- NSN 3040-01-170-9751 2320-360-24P. Make a note of these NSNs until there’s a change or revi- sion to the technical manual. PS 609 4 AUG03 PS 609 5 AUG03 AOAP… Trailer Hookups… oww! To Sample, or Not to Sample I locked uh-oh! up two looks like miles I swapped ago! the brake air lines. hey!isn’t it about time for my aoap but you aren’t sampling? listed in da Pam 738-750! “Careful”is the word to keep in mind when you hook up the brake air hoses from a trailer to your 21⁄- or 5-ton truck. If you swap the air lines,the trailer brakes 2 will lock up,burn out or ruin the tires. So-o-o-o,make sure your trailer’s hooked up right! It’s not so hard. Just remember the SERVICE air coupling on your truck is always on the road side and the EMERGENCY is on the curb side. Your best bet is to color-code the trailer air hose connectors and the truck’s glad- hand couplings. A dab of blue paint on the SERVICE connectors and red on the Dear Half-Mast, EMERGENCY pair will keep things straight. In the last couple of weeks, I’ve been asked the same question several times: “Why do we do oil analysis on HMMWVs when they’re not listed in Table 4-1 of DA Pam 738-750?” Paint truck …and trailer couplings Of course the answer is that the pam hasn’t been updated in more than 8 gladhands… years (1 Aug 94). But is there anything official that tells us to AOAP-test HMMWVs? CW2 J.R.S. Dear Chief J.R.S., You bet. The Logistics Support Activity’s WebLOG web site provides a list of all tracked and wheeled vehicles in the AOAP program along with their sam- pling intervals. The HMMWV is on the list. For tactical wheeled vehicles check out: You can http://weblog.logsa.army.mil/aoap/aoap_tactical_.htm alEMsoER aGdEdNC aYn ID Plate 2N1S/N2- t9o9n0 5tr-u0c0k- NSN5 -9t9o0n5 t-r0u0c-k999- For combat vehicles,watercraft,MHEequipment, or SERViCE I.D. plate to EMERGENCY 774-4284 7369 construction equipment and generators,click your truck’s SERVICE 740-9721 7370 on the links at the bottom of the page. gladhands to help. PS 609 6 AUG03 PS 609 7 AUG03 HEMTT… M915A4 Tractor Truck… hmmm, ok. what about this one? that’s not a spare, either! with my new guard, I don’t have to worry about a cracked fuel-water separator bowl! t Dear Editor, he fuel-water separator on your Our unit found out the spare fuse receptacles on the tractor truck’s fuse HEMTT won’t do its job if its plastic Shield panel aren’t slots for spare fuses! For instance, Spare 4 is a fuse for the bowl is cracked or broken. protects wiper/washer. Just thought you could pass this onto other operators and mechanics. bowl Protect the bowl by installing a fuel SPC Paul Dickinson bowl shield, NSN 2540-01-383-2252, 46th Trans Co using three cap screws, NSN 5305-00- Camp Humphreys, Korea 269-3211, three nuts, NSN 5310-00- 655-9544,and three lock washers,NSN Dear SPC Dickinson, 5310-00-637-9541. The shield will Thanks for the heads-up. keep rocks, gear, big feet and other Matter of fact,here’s the other fuses items from cracking the bowl. (shown as spares) and what they’re for: See Page 4-41 of TM 9-2320-279-20-1 for instructions on installing a replace- Spare 1 Spare ment shield. If your truck has never had a shield installed,you’ll need to drill some Spare 2 Trailer ABS (along with fuse next mounting holes first. to it) Use the shield as a template to mark the hole locations. Place the front of the Spare 3 Diagnostics ignition power shield 21⁄2inches from the back of the tire carrier and 3 inches in from the edge of Spare 4 Wipers/washer the fender. Spare 5 12-volt dash power receptacle Spare 6 Mirror heat (along with fuse next HEMTT Static Reel to it) Make a note of these fuses until NSN 5340-01-269-4423 gets the static reel for the M978 HEMTT fuel tanker. there’s a change or revision to This NSN replaces the parts info shown as Item 1,Fig 282 of TM 9-2320-279-24P. TM 9-2320-303-10. PS 609 8 AUG03 PS 609 9 AUG03 CIPs CDs Important, Too Combat Identification Panels… those two Cds really if there’s anything helped me get in there about how my CIP panels to clean and maintain installed! ‘em, lemme know! B y now, all active Army units should we’ll tell you You can also request extra copies by writing to: have received their free-issue combat how to take PM TIMS care of your identification panels (CIPs). cIPs panels! SFAE-IEWS-NS-TIMS (Wayne Deutscher) CIPs panels are covered with a special Bldg 563,Ave of Memories thermal tape and come in different sizes Ft Monmouth,NJ 07703 to fit specific vehicle configurations. You’ll find more information about CIPs on Pages 2-5 of PS 594 (May 02). View When mounted on the front, back and the article on-line at: sides of a vehicle,they present a unique http://www.logsa.army.mil/pub/psissues/ps_594.pdf contrasting “cold spot” when viewed High Pressure Cleaning Caution through a thermal-imaging device. The CDs don’t mention Gunners trained to recognize these unique signatures can tell if the vehicle in this, but you should never Nohigh pressure their sights is friendly or unknown. Additionally,when not in use,the panels should attempt to clean CIPs with a water on CIPpanels! be placed in the "off position" by reversing them to protect the thermal tape. power washer or any other Almost as important as the panels themselves is the CD set that accompanies the form of high pressure water. CIPS.Combat Identification Panels Kit Installationis a two-CD set that provides High pressure water will detailed video on how to install,use,maintain and clean the CIPS. It also includes destroy the thermal tape. That thermal images of specific vehicles and printable versions of the combat vehicle ruins or seriously degrades the mounting instructions. CIP’s thermal signature and If you need additional CD sets, contact Wayne Deutscher at the office of the your protection from friendly Program Manager for Target Identification and Meteorological Sensors (PM TIMS). forces. Call DSN 987-5272 or (732) 427-5272 or send an email to: Use a soft, clean, oil-free [email protected] cloth to wipe the panels clean. Over or MLRS Carrier… Broken Bolt a Bummer Under? help! I’m melting! battery acid a little has done a primer and number on lacquer your battery will help tie-down things! bolt! it matters! M echanics,when reinstalling the power- Don’troute steering pack on an MLRS,you also have to reat- cable over brake rod tach the steering cable. The question is, U nless the crew checks MLRS carrier do you route the cable over or under the batteries often,there’s going to be a lit- Acid-weakened brake rod? tle overflow of battery acid from time bolt will snap If the cable is routed over the brake to time,mechanics. rod, you’ve created a serious problem. That acid drips down to the bottom When the cab is lowered, the steering of the battery box, coating the battery cable gets pinched between the brake rod tie-down bolt, NSN 5306-00-933- and the underside of the cab. That can 1131. Then the bolt weakens and snaps result in a loss of steering. when you try to remove the batteries. Before installing a new bolt, try coating the new one with some primer So do the MLRS— and its crew—a favor. coating, NSN 8010-00-515-2208, and Make sure you route lacquer, NSN 8010-00-166-1667. The the steering cable under the brake rod primer coating and lacquer provide a when reinstalling the protective coating that keeps acid from powerpack. eating away at the tie-down bolt. PS 609 12 AUG03 PS 609 AUG03 M113A3 FOV… Dear Sergeant B.G.M., Try These Towbar Parts You bet. Order from A Pin,NSN 5315-01-035-5307 this list of components B Clevis,NSN 5340-01-051-3609 to repair your towbars. hey! I just found the parts we need to repair your at Medium Duty Assembly towbar! last! Bolt,NSN 5306-01-037-4886 Washer, NSN 5310-00-209-0698 Nut,NSN 5310-00-834-8755 Cotter pin, NSN 5315-00-843-0138 Tube assembly, Tube assembly, NSN 4710-01-507-6936 NSN 4710-01-507-6935 Pin, NSN 5315-01-031-6207 Clevis, Light Duty Assembly NSN 5340-01-046-4770 Just remember,you’ll Dear Half-Mast, need two sets of the We have several M113A3 towbars, NSN 2540-00-936-7801, medium duty and light duty that need repair. But I haven’t been able to find replacement Pin,NSN 5315-01-031-6207 components. Can you help? Lock pin, NSN 5315-00-350-4326 components SFC B.G.M. for each use. AKERR for For training purposes or Unlike standard steel tow cables, the AKERR is an 80-ft long nylon rope during an emergency situa- with looped ends rather than a clevis. Training or tion when a recovery vehicle TM 9-4020-200-10 has use and care information for AKERR. It also lists is not available,you can use vehicles authorized to use the AKERR. Pay strict attention to the warnings and Emergency the Allied Kinetic Energy cautions in the TM. All recovery operations are dangerous and using AKERR Recovery Rope (AKERR) to does not change that. Only recover tracked vehicles that The AKERR kit,NSN 4020-01-211-8382,contains the kinetic energy rope, weigh under 34 tons. two shackles and a canvas storage bag. The kit is authorized by CTA 50-970. PS 609 14 AUG03 PS 609 15 AUG03 M88A2 Hercules… M109-Series SP Howitzer, M992A2 Ammo Carrier… Towing Tips Reverse Sprockets for Long Life try these for Tanks terrific tank towing tips! hey! aren’t you gonna check my sprockets for wear? The Hercules is a lot heavier and stronger than the • Always perform the recovery tow operational risk assess- old M88A1 recovery vehicle, but you still ment shown on Page 0040 00-2 of TM 9-2350-292-10 to deter- need to use caution mine if a hold-back vehicle—either another tank or a second when towing a tank. Follow these tips… Hercules—is needed. • Hook up the towbar following the instructions on Page 0043 00-2 of the -10 TM. • Never allow anyone to ride in or on the tank being towed. • Adjust your towing speed for the road conditions. Follow the guidance on Page 0040 00-3 of the -10 TM. • Avoid steep slopes whenever possible. Your track can slip when towing uphill or downhill. • Avoid making sharp turns or sudden stops. Keep turns I slow and gradual and stay in first gear. t’s easy to tell when it’s time to reverse the sprockets on your howitzer or ammo Tow slow and easy carrier,crewmen. Just eyeball the built-in wear marks on the sprocket teeth. with no sharp turns If you forget to check the sprockets after each operation,like it says in the -10 TMs,the sprockets may wear too far into one side of the teeth. Reverse sprocket That causes the sprocket to “hook” when wear mark track end connectors during operation. is reached The connectors are damaged, track life is reduced and sprockets are broken. Of course you should still reverse the sprockets annually to extend their life span. If the sprocket wears to the edge of If you don’t do these things,the tank you’re towing the wear mark before the year is up, can jackknife,push you sideways,run into the back of though, reverse it immediately. If both your vehicle, ruin your transmission or brakes, and marks are reached,replace the sprocket. maybe even flip you over. PS 609 16 AUG03 PS 609 17 AUG03