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
Click on image above to view and
download 
this and other posters
Articles
NEWS | Nov. 3, 2021

M978A2/A4 HEMTT: Deadman Valve Leaking?

HEMTT Fuel Tanker
Courtesy photo
 
Operators, do you have an issue with the deadman valve leaking on your M978A4 or M978A2 HEMTT fuel tankers? It’s also commonly called the hand-actuated control valve (HAV). You can easily fix the leaking with some sealing compound.
 
Deadman valve
Deadman valve
 
There are two (2) pipe nipples on the deadman valve that can leak if sealing compound is not applied to the nipples when you’re changing them out. On the red line is pipe nipple, NSN-4730-01-154-2074, and on the green line is pipe nipple, NSN 4730-00-277-8289.
 
Both pipe nipples require sealing compound
Both pipe nipples require sealing compound
 
So, don’t forget to add sealing compound, NSN 8030-01-218-0321, PN MS-PTS-50, to both pipe nipples to stop those pesky leaks. See TM 9-2320-326-13&P (Sep 20) for more instructions. Note that the deadman valve isn’t an assembly, so it’s made of different parts.

Want to get better search results faster? 
Click the link below to access our "how to" guide
.
LOGSA Links/URLs
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 @mail.mil address. To update, change the domain to @army.mil