Fig. 6-98: Chain Roller Assemblies - Middle (Forward) Boom Section - JLG Lull 1044C-54 II Series Service Manual

31200079
7
8
9
10
7
1 2
3
# Description
1 Grease Fitting Cover
2 Grease Fitting
3 Chain Roller Pin
4 Lock Pin
5 Lockwasher

Fig. 6-98: Chain Roller Assemblies - Middle (Forward) Boom Section

17. (Ref. Fig. 6-98) Install chain roller assemblies on middle (forward)
boom section as follows:
a. Install chain roller bushing (Item 10) in chain roller (Item 9).
b. Install chain roller in bushing (Item 8).
c. Install chain roller and two (2) chain guide washers (Item 7) on
front of boom section with chain roller pin (Item 3).
d. Secure the chain roller pin to the boom section with lock pin
(Item 4), lockwasher (Item 5), and capscrew (Item 6). Torque the
capscrew to 110 ft-lbs.
e. Install grease fitting (Item 2) and grease fitting cover (Item 1) on
chain roller pin. Tighten grease fitting 2–3 turns past finger tight.
f. Repeat the preceding steps to install chain roller assembly to the
rear of the boom section.
g. Install upper chain anchor (Item 3) on upper chains (Item 1) with
chain anchor rod (Item 6) and two (2) lock nuts (Item 2). Torque
lock nuts to 108 in-lbs.
h. Install upper chain anchor to rear of boom section with lockwasher
(Item 5) and capscrew (Item 4). Make sure the hole in the anchor
(where the anchor rod was installed) is positioned toward the front
of the boom. Torque capscrew to 280 ft-lbs.
i. Lay upper chain on top of middle (forward) boom section.
1
2
4
5
6
#
6 Capscrew
7 Chain Guide Washer
8 Bushing
9 Chain Roller
10 Chain Roller Bushing
Boom and Transfer
7
8
9
10
7
4
5
6
3
Description
6-93