Fig. 6-56: Inner Boom Cross-Section At Window; Fig. 6-57: Middle (Forward) Boom Cross-Section At Window - JLG Lull 1044C-54 II Series Service Manual

Boom and Transfer
6-54

Fig. 6-56: Inner Boom Cross-Section at Window

2. (Ref. Fig. 6-56) Place a straight edge against the bottom surface of the
inner boom section. Measure the distance from the straight edge to the
bottom surface of the boom tube. This distance should not exceed 1/4"
(0.25"). The maximum deflection will be found just in front of the middle
(forward) boom section.
3. (Ref. Fig. 6-56) The side walls may also deflect outward at the window
areas. Take this measurement across the inner boom tube, through the
windows. Maximum allowable deflection is 3/16" (0.19) per side. The
maximum allowable inner boom tube width is 10-5/8" (10.625"),
measured through the windows.

Fig. 6-57: Middle (Forward) Boom Cross-Section at Window

10 5/8" (10.625")
3/16" (0.19")
1/4" (0.25") Max.
12 7/8" (12.875")
3/16" (0.19")
1/4" (0.25") Max.
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