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 | July 30, 2020

HIMARS: How-to Tips

HIMARS Training Exercise
Photo by Pfc. Sarah Pysher
 
[This article updates one that appeared in PS 780 (Nov '17), pp. 36-37, particularly the section on bleeding the air from the hydraulic system.]

Exercise, exercise, exercise. The worst thing you can do is let your HIMARS sit for weeks. Without exercise, grease coagulates and moving parts like the limit switches and rollers stop moving and start sticking. The flex drive shaft binds and can be damaged. Taking the launcher-loader module (LLM) through its paces weekly can prevent these problems.
        
Clean, clean, clean after firing. Rocket residue is very corrosive. If you don’t clean it off ASAP, then you soon have major and expensive corrosion problems. The bad news is that the only way to get rid of the residue is with lots of CLP and elbow grease. The good news is that the sooner you clean, the easier the job is.
 
Use CLP and clean after firing
Use CLP and clean after firing
 
Take it slow and keep it straight loading and unloading rocket pods. Raise and lower pods as straight up and down as possible. That prevents cables from fraying and makes it easier on the LLM motor. Keep an eye on the cables to make sure they don’t twist and become tangled. Stop and reposition the pod if necessary.
        
No slaving from launcher to vehicle. That can cause a power surge that damages expensive electronic components or kicks on the fire control system.
           
Pay attention to torque when putting on wheels. The tires have aluminum rims that can be damaged if tightened too much. Follow the procedure in TM 9-2320-450-13&P (Jan 19). Torque the wheels in sequence following this chart:
 
Torque your lug nuts
Torque your lug nuts​
 
Torque them first to 40 ft-lbs, then 150-200 ft-lbs. Next tighten the CTIS lug nut to 150-200 ft-lbs and then tighten the nine (9) non-CTIS lug nuts to 350-400 ft-lbs. Finally tighten the CTIS lug nut to 350-400 ft-lbs.
        
Make sure to bleed the air from the hydraulic system before bleeding the air tanks on the truck. Place a bucket under the air side bleed valve and a rag over it to catch any hydraulic fluid. You can find the full procedure in TM 9-1055-1646-13&P (Jan 19).
           
Install glad hand covers when glad hands aren’t being used. Bugs think the glad hands are great places to nest and the wind blows dirt in the receptacles. Bugs and dirt cause blockages and you’ve got air pressure problems. Plus the covers help keep the glad hand seals from drying out and leaking.
 
Glad hands should be covered
Glad hands should be covered
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