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
Would you stake your life, right now, on the condition of your equipment?
Articles
NEWS | Dec. 29, 2020

D7RII Dozer: O-ring Seal’s a Big Deal


This article initially appeared in PS 794 (Jan 19), p. 18. 
 
Operators,

After a track adjustment on your D7R II dozer, make sure the track adjuster cover is snug on the recoil spring compartment.

While you’re at it, check the cap’s rubber O-ring seal.
 
Check O-ring seal for damage
Check O-ring seal for damage

If the seal’s missing, squashed or torn, water can get into the oil in the recoil spring compartment. Oil and water don’t mix, especially in hard-working equipment!
 
Contaminated oil turns milky green
Contaminated oil turns milky green
​
Replace a bad or missing O-ring seal with NSN 5331-00-859-0396.You’ll find it listed as Item 7 in Fig 63 of TM 5-2410-241-24P (Feb 12).
dozers
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.
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