Fig. 6-111: Upper Chain - Middle (Forward) To Middle (Rear) Boom Sections; Fig. 6-112: Securing Lower Chains - Middle (Rear) And Outer Boom Sections - JLG Lull 1044C-54 II Series Service Manual

31200079
# Description
1 Chain Adjustment Anchor
2 Jam Nut
3 Lockwasher
Fig. 6-111: Upper Chain – Middle (Forward) to Middle (Rear) Boom Sections
42. (Ref. Fig. 6-111) Secure upper chain to middle (rear) boom section as
follows:
a. Bring upper chain lying on top of inner boom section up and around
the upper chain roller assembly (Item 5) on the middle (forward)
boom section (Item 6).
b. Install jam nut (Item 2) on chain adjustment anchor (Item 1). Insert
threaded portion of chain adjustment anchor through opening in
bracket at top of middle (rear) boom section.
c. Secure chain anchor with lockwasher (Item 3) and nut (Item 4).
Torque nut to 374 ft-lbs.
2
1
4
3
# Description
1 Capscrew
2 Lockwasher
3 Adjustment Rod
Fig. 6-112: Securing Lower Chains – Middle (Rear) and Outer Boom Sections
43. (Ref. Fig. 6-112) Align notch in head of adjustment rod (Item 3) with
threaded hole in anchor base (Item 4) of middle (rear) (Item 5) and
outer boom (Item 6) sections. Secure adjustment rod with lockwasher
(Item 2) and capscrew (Item 1). Torque capscrews to 50 in-lbs.
#
4 Nut
5 Upper Chain Roller Assembly
6 Middle (Forward) Boom Section
2
5
1
3
#
4 Anchor Base
5 Middle (Rear) Boom Section
6 Outer Boom Section
Boom and Transfer
Description
6
4
Description
6-103