Lull 6K Service Manual - Manual (Page 318)

Boom and Transfer
6-68 Service Manual — Models 644B, 6K, 844C, 8K, 1044C, 10K
Fig. 6-66: Inner Boom Cross-Section at Window
2. (Ref. Fig. 6-66) 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 outer
boom section.
3. (Ref. Fig. 6-66) The side walls may also deflect outward at the window
areas. Take this measurement across the boom tube, through the
windows. Maximum allowable deflection is 3/16" (0.19) per side. The
maximum allowable boom tube width is 12-3/8" (12.38"), measured
through the windows.
4. Retract the boom.
Fig. 6-67: View at Rear of 2-Section Boom
1/4" (0.25") Max.
3/16" (0.19")
J1085
12 3/8" (12.38") Max.
J1086
1/4" (0.25") Max.