Watch Out for Bulging Tubes

Watch Out for Bulging Tubes

Crewmen, it’s bad enough when explosive ordnance disposal (EOD) has to remove a stuck round from your 155mm howitzer. It’s a lot worse if you’re left with a bulging cannon tube!
That’s what could happen to your howitzer if EOD uses the water blast method to remove a stuck round.   The 155mm cannon tubes most at risk are the M7776 and M284 steel and M7776 and M284A2 chrome barrels.

If EOD uses the water blast method to extract a stuck round from your howitzer, inspect the cannon tube with a borescope. A bulge means the tube has to be condemned. If you suspect a bulge but can’t see one, use a pullover gage to measure the area where you suspect damage.
You’ll find the full scoop on inspecting for damage in TM 9-1000-202-14, Evaluation of Cannon Tubes. Appendix T covers the M7776 tube and Appendix U covers the M284 tube. EM 0065, which covers most small arms, has the TM, as does LOGSA’s ETM website:

Be sure to immediately notify your logistics assistance representative (LAR) or field service representative (FSR) if EOD removes a stuck round from your howitzer.
You are also required to report EOD round removal and any damage on DA Form 2408-4, Weapons Record Data Card, in the remarks column. You can access it at:


Keep M3 Tripod Until You Get M205

On Page 43 of PS 760 (Mar 16) we told you the good news that the M205 tripod is replacing the M3 tripod.

It’s good news because the M205 is 32 percent lighter than the M3 and also includes an integral traverse and elevating mechanism.

But some units are jumping the gun and turning in their M3s before they get the M205. Not a good idea! They could be without tripods for a long time until they do get the M205. So keep using your M3s until you get the M205.

But once you get the M205, it’s important you turn in your M3s within 30 days. The Army will continue to use M3s for 3-4 years, so they need your M3s for other units. If any M3s aren’t usable, turn them in for local disposal.

Do not try to order the M205. If will be fielded through total package fielding (TPF).

Questions? Contact Grant Baker at DSN 786-1238, (586) 282-1238, or email:

AN/PSQ-20/20A Goggles Blind? Good News!

If your AN/PSQ-20, NSN 5855-01-534-6449, or AN/PSQ-20A, NSN 5855-01-603-0489, night vision goggles aren’t working, there’s good news. You can get them fixed if they qualify.

The fix doesn’t cover ancillary items or components of end item for the goggles and is available only if the goggles fail after a thorough inspection following TM 11-5855-322-10 or TM 11-5855-335-10 or their -23&Ps. Your 94F repairman does that.

To get your goggles fixed, you’ll need a return authorization from the manufacturer. Get it by logging into the warranty repair portal:

New users will need to register by clicking on the HERE button on the left side of the web page. Returning users can log on with their email address, password and DODAAC.

Once you receive a return authorization, fill out a DD Form 1348-1A and ship the goggles to:


Warranty/Customer Repair Service

7635 Plantation Road

Attention: Marketing Department RA#____

Roanoke, VA 24019

If you have questions, call Harris at (800) 533-5502 or (540) 563-0371.

Take an App Approach

If you could keep from bruising your knuckles or breaking your back when you’re doing PMCS or equipment repairs, you’d jump at the chance. You’d probably want to know all about a tool that helps protect you while making you more proficient and efficient in doing your job.

There is such a tool, but it might fool you at first. It’s a magazine and it’s small – but it’s one heck of a tool.

Let’s think about that nut, tube, or other component that needs replacing. You’ve dug through a dog-eared tech manual, finally found the national stock number (NSN), and you’ve got it ordered. But the requisition comes back unfilled. That NSN is a terminal item and it’s out-of-stock.

What the heck? How can you fix stuff when the Army no longer supplies the part? PS, The Preventive Maintenance Monthly, that handy little magazine, is the tool you need. The probability is that PS Magazine has already published a story about the NSN being terminal and has provided the new NSN you should be using instead.

Or maybe some other Soldiers have noticed a part that gets overlooked in PMCS, but keeps other parts from working right when it fails. That puts your vehicle at risk of fire, damage, or loss. PS lets you know what to look for.

Maybe there’s a new MWO out that you haven’t heard about yet. PS has probably written about it, telling readers where to find the MWO and who’s going to do it!

Now, PS Magazine has been retooled just for you. In addition to the monthly printed magazine that’s been available to units since 1951, PS is now available as a mobile app for both Apple and Android tablets and phones.

We’ve included static PDF issues from 2014 through February 2016, but the issues from March 2016 forward are interactive. Videos are attached to links in some articles, some articles link to photographs of equipment components, a link to our website allows access to our search engine covering all articles dating back to 2000. Additional videos are available on our Resources link for use as individual learning or team training material. The Hot Topics link allows PS to get late-breaking information to you concerning your equipment. Maybe a specific part needs to be checked immediately to avoid equipment breakdown, or there’s an urgent need for an unserviceable part so it can be repaired and put back into the supply system.

PS, The Preventive Maintenance Monthly is an official Army technical bulletin, but it uses color, sequential art (cartoon art) techniques, and equipment illustrations to provide you current information approved by equipment proponents.

PS is the information tool that needs to be in your toolbox and now on your tablet or phone. Use these QR codes or the following URL addresses to get the App and download the magazine:

Fig 1

PS website:

Fig 2

Android PS MAG App

Fig 3

Apple PS MAG App

The August PS Magazine has arrived!

The August PS Magazine has arrived! Look for PS 753 to be in your inbox any day now. Grab it! Read it! Take what you can use from it! Pass it on! PS is the primary preventive maintenance magazine in the Army. If you miss it, you’re missing out on important equipment knowledge.


Lose the Crate, Keep PDISE Great

All models of the power distribution illumination system, electrical (PDISE), except the M46, are shipped from the manufacturer in sealed wooden shipping crates. Inside are the PDISE, its cables, accessories and TM.

Recently, new PDISEs stored in shipping crates that were exposed to weather showed corrosion on the connectors and mounting hardware when unpacked.

A little detective work revealed that the shipping crates were manufactured using formaldehyde. Formaldehyde speeds up corrosion. It causes cadmium “bloom.” Bloom occurs when cadmium transforms into cadmium oxide, a powder-like residue that forms on cadmium-plated components.


This impacts the following PDISE models:

  • M200 A/P, NSN 6150-01-308-5672
  • M100 A/P, NSN 6150-01-308-5671
  • M60 A/P, NSN 6150-01-307-9445
  • M40 A/P, NSN 6150-01-307-9446

To help slow down the corrosion, a mitigation plan has been added to the PDISE technical data package.

But units should still promptly unpack PDISE and remove all contents from the shipping crate. Store the unpacked PDISE inside, out of the weather.

Safely dispose of shipping crates and any packing materials, including plastic bags. If cadmium oxide is found, follow WP 0021 in TM 9-6150-226-13 (Apr 12) for cleaning and disposal procedures. Also review the cadmium safety tips on Pages 45-47 in PS 723:

Questions? Contact CECOM’s John Mansfield at (410) 670-5737, or email:

Supply Support Changes for WIN-T Inc 1

Take note, units! Product Manager Warfighter Information Network-Tactical (WIN-T) Increment (Inc) 1 is changing the supply support instructions for the following items:

Item LIN
Regional hub node (RHN) and antenna S51708
Tactical hub node (THN) C18291
Unit hub satellite truck (UHST) S05002
Joint network node (JNN) J05001
Satellite transportable terminal (STT), v1 S05011
Battalion command post node (CPN) B67234
STT, v2 S05012
Single shelter switch (SSS) C20617
Network operations (NetOps) C05045








 Transition from ICS to SARSS

   The decade-long interim contractor support (ICS) for the WIN-T Inc 1 satellite communication (SATCOM) systems (RHNs, UHSTs, STTs) by General Dynamics (GD) will end on or about July 31, 2015. All GD regional support centers (RSCs) will stop support then.

From May to July 2015, SATCOM spare parts will ship in monthly batches from all GD RSCs to the Communications-Electronics Command (CECOM). During this transition period, contact your GD RSC first to see if needed parts are still on-hand. If not, order parts from CECOM or the Defense Logistics Agency (DLA).

CECOM: SATCOM Reparable Parts

Starting August 1, 2015, supply support for satellite communications (SATCOM) reparable parts, such as modems, high power amplifiers and azimuth/elevation motors for the RHNs, UHSTs and STTs, will be managed by CECOM.

Order spare SATCOM parts by NSN via Army Working Capital Fund (AWCF) requisitions in SARSS. Unserviceable turn-ins eligible for AWCF price credit will be adjusted in SARSS.

Common Hardware Systems (CHS)

All GD CHS RSCs remain open to service both in and out-of-warranty (OOW) WIN-T Inc 1 CHS components such as laptops, servers and routers. CHS components are fielded with 5-year warranties and are refreshed/refielded by Inc 1 every 5-6 years.

WIN-T Inc 1 will pay for the repair of any OOW CHS components except other than fair wear and tear. Visit any GD CHS RSC, call (877) 247-7711, or request repair maintenance authorization (RMA) instructions by emailing:

DLA: Consumable Parts

Effective August 1, 2015, supply support for all WIN-T Inc 1 consumable parts will be managed by DLA. Examples of DLA-managed consumables include filters, O-rings and cables.

Order Inc 1 consumable parts by NSN via ACWF requisitions in SARSS. DLA stocks consumable parts based on demand history, so over time more requisitions equal more stock. For ordering help, contact DLA Customer Service at DSN 661-7766, (877) 352-2255, or email:

For more info, including the latest TMs, a list of CECOM-managed SATCOM reparable NSNs, CHS in and OOW procedures, and templates for 1b and 1 component hand receipts and spares lists and POCs, visit the WIN-T Inc 1 page on AKO at: