7-10. LOWER AND RAISE FRONT AND REAR WALL.
Front wall weighs 1,500 lbs (681 kg). Rear wall weighs 1,200 lbs (545 kg). The flatrack is
equipped with spring-loaded counterbalance mechanisms that allow the wall to be lowered
by two soldiers. Raising and lowering operations must be conducted on level ground. Do
not stand under walls when raising or lowering. Use the aid of an assistant when raising or
lowering the front or rear wall to prevent serious injury or death to personnel.
Front and rear walls are lowered and raised the same way. Front wall is shown.
Right and left pin assemblies are removed the same way. Front left shown.
Perform Step (1) for front wall only.
Install rollers in front wall (Para 8-4).
Remove handle, socket and two ratchet straps from stowage box (1).
Position mud flap (2) in upper clip (3).
Raise pin lock (4) from adjusting nut (5).
Turn adjusting nut (5) counterclockwise to loosen pin (6) in wall (7) until collar (8) contacts pin (6).
Ensure pin is slid completely out of hinge or damage to equipment will occur when wall is
Ensure wall mounted tiedown rings and other equipment are properly stowed prior to
lowering wall or damage to equipment could result.
Lift safety catch (9) and collar (10) and slide pin (6) out of hinge (11).
Repeat Steps (2) through (5) to release remaining pin (6).
Stow handle and socket in stowage box (1).
Position mud flap (2) in lower clip (3).
With the aid of an assistant, lower wall (7).
Install ratchet strap (12) on two tiedown rings (13) and wall (7).