TM 9-2320-366-10-2
(12.1)Install two shackles (5.1) on M1089 rear towing eyes (18) with clevis pins (5.2).
NOTE
Left and right side chains are installed the same way. Right side shown.
(13) Connect one end of two chains (1) to M1089 rear shackles (5.1).
Change 2