Fig. 6-97: Upper Chain Roller Assembly - Middle (Rear) Boom Section - JLG Lull 1044C-54 II Series Service Manual

Boom and Transfer
6-92
1 2
3
6
5
# Description
1 Chain Guide Washer
2 Chain Roller Bushing
3 Hardened Bushing
4 Chain Roller
5 Grease Fitting Cover
Fig. 6-97: Upper Chain Roller Assembly – Middle (Rear) Boom Section
13. (Ref. Fig. 6-97) Install upper chain roller assembly on middle (rear)
boom section as follows:
a. Install two (2) chain roller bushings (Item 2) into chain roller
(Item 4).
b. Install two (2) hardened bushings (Item 3) on chain roller.
c. Install bushings and chain roller and two (2) chain guide washers
(Item 1) on front of middle (forward) boom section with chain roller
pin (Item 10).
d. Secure chain roller pin with lock pin (Item 7), lockwasher (Item 8),
and capscrew (Item 9). Torque capscrew to 110 ft-lbs.
e. Install grease fitting (Item 6) and grease fitting cover (Item 5) on
chain roller pin. Tighten the grease fitting 2–3 turns past finger
tight.
14. Lift and slide middle (rear) boom section into outer boom section.
Release strap securing extension cylinder to outer boom section and
install cylinder end through orifice of middle (rear) section.
15. Apply EP lithium based grease to the inside bottom surfaces of middle
(rear) boom section (slide pad slide areas).
16. Place middle (forward) boom section on work stands upside down.
4
3
2
1
10
#
6 Grease Fitting
7 Lock Pin
8 Lockwasher
9 Capscrew
10 Chain Roller Pin
7
8
9
Description
31200079