TM 9-2320-211-10
(e) Aline retaining pin holes in braces and insert T-shaped retaining pins (3) in holes.
(f) Lower boom slightly to remove load from boom elevating mechanism.
(3) Rigging boom jacks.
(a) Fully lower and extend boom (8)
to expoke jack pin holes.
(b) Remove boom jacks (12) spreader
bar (10), base plates (11) and boom jack
pins (9) from stowage.
(c) Secure top end of boom jacks (12)
to boom (8) with boom jack pins (9).
(d) Attach spreader bar (10) to
brackets at lower ends of boom jacks with
T-shaped retaining pins.
(e) Raise boom (8) to aline holes in
upper and lower boom jack (12) sections
and insert T-shaped retaining pins in holes.
(f) Install base plates (11) on jacks, and lower boom slightly to relieve load from
elevating mechanism.
e. Rigging Crane Lines.
(1) Rigging two-part line.
(a) Pass crane hoist cable (14) over
one boom sheave (13) and down through
boom end.
(b) Pass crane hoist cable (14) around
block sheave (15) and secure cable end to
TwO.PART LINE
THREE.PART LINE
boom with cable anchor pin (16).
(2) Rigging three-part line.
(a) Pass crane hoist cable (14) over one boom sheave (13) and down through boom end.
(b) Pass crane hoist cable (14) around block sheave (15), up over second boom sheave
(17) and down through boom end.
(c) Secure cable end to block with cable anchor pin (16).
TA 155229
