Fig. 6-70: Extension Cylinder Removal - 4-Section Boom - JLG Lull 1044C-54 II Series Service Manual

31200079
CAUTION: Be sure to note orientation of the hose guard during removal.
Your hose guard may be different from that shown above. If
the hose guard is reversed at assembly, equipment damage
may occur during operation of machine.
b. Loosen and remove hydraulic hoses (two (2) each auxiliary and
carriage tilt) (Items 7 and 8) from hydraulic tubes (Items 1 and 2) at
rear of middle (front) boom section. Bleed any remaining oil into a
suitable container. Tag and cap hoses and tubes.
c. Loosen and remove hydraulic hoses (two (2) each auxiliary and
carriage tilt) (Items 14 and 15) from hydraulic tubes (Items 10 and
11) at rear of outer boom section (Item 18). Bleed any remaining oil
into a suitable container. Tag and cap hoses and tubes.
d. For early production models, remove four (4) each nuts (Item 17),
lockwashers (Item 16), round head screws (Item 13), and half
clamps (Item 12).
3
1 2
# Description
1 Rod Nut
2 Socket Setscrew
3 Extension Cylinder Rod Boss
4 Middle (Rear) Boom Section
5 Boom Extension Cylinder
6 Capscrew
7 Flatwasher
8 Elbow
9 Hydraulic Tube
Fig. 6-70: Extension Cylinder Removal – 4-Section Boom
11
6
4
5
#
10 Cushion Clamp
11 Extension Cylinder Base Mount
12 Shim
13 Shim
14 Nut
15 Capscrew
16 Lockwasher
17 Flatwasher
18 Extension Cylinder Base Mount
Boom and Transfer
14
12 13
10
9
7
8
MV0390
Description
6-67