b. Loading/Unloading Scissored Bridge to/from a Lowbed Semitrailer
(M172 or M172A) - CONT
The bridge can crush you. Unessential personnel should stay clear at all times. Be aware of
what is going on around you at all times. Survey a route for escape in the event of a problem.
(e) Ensure that the trailer has the proper size tires and that the tire pressure is correct before
loading the bridge.
(f) Chock block the rear duals.
(g) With trailer positioned at bank, place the 4 x 4 in. x 10 ft timber across the bed between the
rear duals and place the 4 x 4 in. x 5 ft timber across the top of the trailer's gooseneck 1 ft. 4
in. from the rear curve on the gooseneck.
The bed of the trailer and lower length of track of the launcher should be close to parallel.
(h) Drive the launcher up on top of the bank and center it on the trailer.
Change 2 2-85