Lull 944E-42 Service Manual - Manual (Page 69)

3.21 Model 644E-42/944E-42 Rev. 6/04
Boom
6. At the front of the intermediate boom, coat the
sheave pin (15) and bore with anti-seize compound.
Coat the capscrew (13) with Loctite
®
242 (blue). Install
the sheave (16) into place and insert the sheave
pin (15), capscrew (13) and locknut (14). Torque
capscrew (13) to, 90 - 162 lb-ft (123 - 220 Nm).
7. Coat the capscrews (21) with Loctite
®
242 (blue).
Install the top (17), side (18) and lower wear pads
(19) and spacers (20) on the outer boom in their
previously marked positions with their capscrews
(21) and washers (22). Use the capscrews (21) and
washers (22) to secure the wear pads and shims to
the front of the outer boom. Torque capscrews to,
33 - 38 lb-ft (46 - 52 Nm).
8. Continue installing the intermediate boom until it
makes contact with the front of the outer boom.
Remove the overhead lifting device and sling.
9. Measure all wear pad gaps (refer to Section 3.5,
“Boom Wear Pads,” for wear pad gap dimensions
and wear pad thickness requirements). Add or
remove shims as required. Replace the wear pads
with new ones, if needed.
10. Install the inner boom, Extend/Retract cylinder and
extend chain and attaching hardware. (Refer to
Section 3.3.1, b. “Inner Boom Installation.”)
11. Clean up all debris, hydraulic fluid, etc., in, on, near
and around the vehicle.
12. Start the engine and operate all boom functions
several times. Check the chain tension again and
adjust as necessary. (Refer to Section 3.4.3, “Boom
Chain Tension Check,” and Section 3.4.4, “Boom
Chain Tension Adjustment.”) Check for leaks, and
check the hydraulic fluid level in the tank; add fluid if
required.
13. Apply grease at all lubrication points (grease fittings).
(Refer to the appropriate Owners/Operators Manual
for lubrication information.)
14. If required, replace any decals according to their
previous positions. (Refer to the proper Parts Manual
for correct locations).
MU1430
13
14
15
16
MU1280
22
21
17
18
19
20
21
22
21
22
20
WARNING:
Avoid prolonged engine
operation in closed areas without adequate
ventilation. Failure to properly ventilate exhaust
fumes can result in death or serious personal
injury.