Broken Fan Belts

When a fan belt breaks and a replacement is not available, mend or substitute it. To mend a broken fan belt—

  • Punch holes in both ends of the broken belt and put a small gauge wire or bootlace through each hole.
  • Secure the wire or laces.
  • Replace the belt with just enough tension to drive the vehicle accessories.

To substitute for the broken fan belt—

  • Use fiber rope from the vehicle tarpaulin or a piece of field telephone wire.
  • Loop the wire or rope around the pulleys several times, pull as taut as possible, and tie with a square knot.

In both cases, operate the engine at low speed. This will prevent breakage or loss of the substitute belt.

Source: U.S. Army FM 4-30.31, Recovery and Battle Damage Assessment and Repair