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
Click on image above to view and
download 
this and other posters
Articles
NEWS | Aug. 4, 2022

Apache: Engine Cleaning the Right Way

Soldiers preparing to install a T700 engine on an Apache
Photo by Sgt. Preston Malizia
 
Mechanics, you may remember the days of quick engine cleanings. Today, engine care has become more sophisticated. WP 0324 of TM 1-2840-248-23&P (Oct 19) now specifies cleaning intervals and adjustments to those intervals based on environmental conditions.
 
In certain operating environments (such as cold weather, salt water, desert or sandy), multiple wash and rinse cycles are necessary and recommended by engineers to facilitate cleaner compressors, longer on-wing time and reduced critical wear.  Also, hot section cleanings are recommended to remove clogged cooling passages and reduce elevated engine operating temperatures, which if not done, can result in premature component failures.
 
WP 0324 also provides guidance on approved cleaners. A note in this work package states that B&B 3100 (MIL-PRF-85704, Type I) is the primary cleaner for Army turbine engines, approved for locales where environmental restrictions permit. Where they don’t permit, engine cleaners that conform to MIL-PRF-85704, Type II and Type IIA, are acceptable. Comply with the existing washing procedure. Both types of cleaners are less effective than Type I; as a result, you may have to wash the engine more often for better results. Note that Type IIA cleaners do not require dilution with water.
 
TM 1-2840-248-23&P has very little work to perform at PMI on the T700 engine. Maintainers should therefore consider other maintenance tasks that’ll enhance performance between PMI intervals. One example is conducting off-wing hot section engine cleanings when operating in dirty environments (WP 0325). Performing off-wing hot section cleanings removes any accumulation of particles that may impede cooling airflow through hot section parts, which in turn, may cause material fatigue, decreased parts clearances and corrosion.  
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