NEWS | Feb. 4, 2021

MLRS: Don’t Let the Cold Weather Stop You in Your Tracks

Multiple Launch Rocket System (MLRS)
Photo by Markus Rauchenberger
 
Dear Editor,
        
Winter is here and we need to get the word out about cold weather operations and snow and ice removal from the MLRS load module (LM).
           
Snow and ice buildup can interfere with system operation, so Soldiers need to pay attention to the following areas when removing snow.
 
Remove snow and ice from these locations
Remove snow and ice from these locations
 
1. Travel lock actuator and manual drive socket.
2. RP holddown latch handle mechanisms.
3. BC and PDB storage compartment door hinges and latches.
4. RP alignment pads and positioning pins.
 
Ensure there’s no snow and ice in these areas
Ensure there’s no snow and ice in these areas
 
5. Hoist-up limit switches (when reloading).
6. Blast shield doors and closing mechanism.
 
Here’s some additional tips and precautions to consider:
 
  • The crew needs to know about the blast shield door cam. If the hinges are frozen and the blast shield door doesn’t fully open, the cam will hit the blast shield door link mechanism and bend the link or break it. The blast shield door bracket with the support bracket can break as well. Soldiers need to make sure the hinge isn’t frozen and the door is open all the way, as shown.
This cam has failed by hitting the link
This cam has failed by hitting the link
 
Blast shield door link mechanism
Blast shield door link mechanism
 
  • Keeping cable receptacle caps in place prevents corrosion.
  • Soldiers on the ground need to be careful where they stand. If snow and ice hasn’t been cleared from the cage, then an accident could happen.
Don't let this happen to you
Don't let this happen to you
 
  • Taking care when removing the snow and ice can prevent damage to the LM. Users should never hammer or scrape RP alignment pads, positioning pins or limit switches. This could affect rocket aiming accuracy.
  • The MLRS crew also needs to think about battery maintenance. The LM batteries are charged by the vehicle generator. To charge the LM batteries, the launcher interconnect switch on the driver’s control panel must be turned on. Also, the throttle needs to be set to a fast idle. Soldiers can charge the batteries in under two (2) hours. TM 9-1055-647-13&P (Jun 20) gives more information on snow and ice removal and charging batteries.
Pablo Merel
AMC Missile LAR

Editor’s note: Thanks for the great tips, Pablo. Consider the message transmitted.