Lull 944E-42 Service Manual - Manual (Page 58)

Boom
3.10 Model 644E-42/944E-42 Rev. 6/04
33. Remove the capscrews (1 and 4) and washers (2)
and hydraulic hose track (3) from inside the inner
boom.
34. Inspect the boom and welds. Contact your local Lull
distributor or the JLG Service Department, if
structural damage is detected.
35. Inspect hoses, hardware, wear pads, mounting
points, chains and other components visible with the
inner boom removed. Replace if damaged.
Note: For details on inspecting wear pads see; Section
3.5.1, “Boom Wear Pad Replacement.”
b. Inner Boom Installation
IMPORTANT: Light lubrication of the boom wear
surfaces with a rust inhibitor/lubricant such as LPS 3 or
equivalent is recommended to keep the boom wear
surfaces lubricated properly. Light lubrication of the
boom wear surfaces is also recommended in salt air
climates, and when the vehicle is stored, to help prevent
rusting.
Note: If replacing the inner boom assembly with a new
inner boom, the hose guide and wear pads should be
installed at this time.
If the inner boom is not to be replaced with a new inner
boom, proceed to Step 5.
1. Coat the capscrews (1) with Loctite
®
242 (blue). Insert
hose guide (3) and secure it with washers (2) and
capscrews (1). Torque the middle capscrews (1) to
10 - 19 lb-ft (14 - 26 Nm) and torque the rear end
capscrews (4) to 21 - 38 lb-ft (29 - 52 Nm).
2. Place the extend chain and clevis, as an assembly,
on top of the inner boom and allow the chains and
clevis to overhang the gooseneck. DO NOT allow the
chain to twist or kink.
WARNING:
NEVER weld or drill the
boom. The structural integrity of the boom will
be impaired if subjected to any repair involving
welding or drilling. Failure to comply can result
in death or serious personal injury.
MU1060
1
2
4
3
WARNING:
Wear protective footwear
with reinforced toe caps and slip-resistant
soles. Failure to comply can result in foot or
other bodily injury from slipping or falling.
WARNING:
NEVER lift a heavy object
without the help of at least one assistant or a
suitable sling and hoist. Failure to comply can
result in death or serious personal injury.