An official website of the United States government
Here's how you know
A .mil website belongs to an official U.S. Department of Defense organization in the United States.
A lock (lock ) or https:// means you’ve safely connected to the .mil website. Share sensitive information only on official, secure websites.

Home : Articles
Have a Soldier/Warfighter who takes pride and ownership of their assigned equipment? Then nominate them for PS Magazine's "I Own This" recognition program. Click HERE to learn more.
PS Magazine poster image which links to the posters page at
Click on image above to view and
this and other posters
Would you stake your life, right now, on the condition of your equipment?
NEWS | Oct. 28, 2021

M149 Water Trailer: Don’t Learn Safety by Accident!

M149 Water Trailer
Photo by Sgt. James Geelen
Dear Editor,

During a training exercise in March 2021, a Soldier suffered a serious foot injury while disconnecting a full M149 water trailer from the prime mover. The Soldier’s foot was fractured. I’d like to share the two (2) mistakes that my unit found which caused the mishap: the wrong adjustable caster assembly (landing leg) and lack of good PMCS of the locking pins.

We found that the trailer was outfitted with a non-adjustable caster assembly (landing leg), which was designed for a lighter trailer like the M105, but never designed for a heavy trailer like the M149.
Non-adjustable caster is wrong landing leg
Non-adjustable caster is wrong landing leg
The correct landing leg for the M149 water trailer is the adjustable caster assembly, NSN 2590-01-183-6816.

Use M149 adjustable caster landing leg
Use M149 adjustable caster landing leg
The other issue was lack of proper PMCS of the landing leg locking pins. The pins were rusty and hard to properly seat, unless they were forced into position with a hammer. This led to the locking pins not being fully inserted which resulted in their failure, causing the trailer landing leg to collapse. Proper maintenance requires cleaning and lubricating the locking pins for smooth operation as outlined in TM 9-2330-267-13&P (Dec 15).

It’s also recommended to use a paint marker or nail polish to draw a witness mark that indicates when the locking pins are properly in the locked position.

Draw witness mark on locking pins
Draw witness mark on locking pins

Abdo Zacheus
Brigade Safety Manager

Editor’s note: Mr. Zacheus, we appreciate you sharing this information with us. And just in case anyone missed it, in 2002, the TACOM Safety Office issued Ground Precautionary Message (GPM) 02-20 advising that the mounting mechanism for the landing leg/caster used on many light trailers can fail if improperly used.

 Here’s a copy of GPM 02-20:
Ground Precautionary Message Graphic
Click on image above to open and view PDF
Want to get better search results faster? 
Click the link below to access our "how to" guide
After entering a keyword, you must hit or click the Search bar/box below for the function to work.
Simply hitting Return won't yield results.
Note about links to archive articles

If you come across a link to a pre-2014 PS Magazine issue or article that uses LOGSA in the web address (URL), use this link instead:
For issues/articles from 2014 and after, click on the Archive/Index tab in the top menu of this website.

BE ADVISED: With the migration to Army365, emails in older articles may still reflect an address. To update, change the domain to