NEWS | Jan. 19, 2021

M1117 ASV: Cold Weather Preventive Maintenance


Operators,

Feeling the bite of winter? Then don’t let it take a bite out of your M1117 Armored Security Vehicle (ASV)!

Just follow the guidance in TM 9-2320-381-10 (Nov 14), and you’ll keep your ASV topnotch, even during the coldest of temperatures or other extreme weather conditions.

Check out the following preventive maintenance basics for the ASV.
 
Operating Tips
 
  • Before you go on a mission, check the heating system to make sure it blows hot air.
  • If the heating system doesn’t blow hot air, have your maintenance folks check the system for leaks.
  • After a mission, allow the engine to idle for three (3) to five (5) minutes before shutting it down. This allows the engine to gradually cool down.
Maintenance Tips
 
  • Check fluid levels daily.
  • Eyeball all batteries for cracks or other damage.
  • Replace engine belts that show signs of wear.
  • Clean air filters and radiator fins daily.
  • Keep the outside of your ASV clean. Brushing off dirt and sand will keep your ASV from overheating.
  • Wipe off dirt from around the fuel tank lid before you open it. That keeps dirt from getting into the fuel tank.
  • Keep an eye on gauges and indicator lights for proper readings. Improper readings can be your first sign of a problem.
  • Cover the windows when not in use.  That should prevent build-up of snow, ice, dirt and sand.
Fluids and Lubricants
 
  • In cold temperatures you’ll want to lubricate your ASV more than usual, but wipe off the fittings first.
  • Engine lubrication oil is prescribed using temperature ranges. Be sure to follow the engine lubrication guidance in the TM.
  • For the transmission, use OE 15W40.
  • Use a mixture of 40 percent water and 60 percent antifreeze in the radiator, based on outside temps.  Refer to the TM for specifics.
  • Keep fuel tanks full in cold weather to prevent condensation that can turn into ice.
Follow the TM guidelines and keep these tips handy so your ASV will be ready when you need it.