Published 08-25-09, Control # 077-04 4-19
RT9130E SERVICE MANUAL BOOM
95. On the top front of the base section, install bolts,
washers, and three cable pads.
96. Repeat step 95 on the inner mid, installing three cable
pads.
97. Repeat step 95 on the center mid, installing two cable
pads.
98. Repeat step 95 on outer mid, installing two cable pads.
NOTE: The boom weighs approximately 15420 kg (34,000
pounds). The above weight is for the boom without
the swingaway boom extension attached.
99. Lower the boom to ground level and secure with cribbing
to prevent tipping.
100.On the top front of the base section, install clip pins,
washers, and the cable guide assembly.
101.On the left side only, install a LMI cable angle bracket on
the base, inner mid, and outer mid using two capscrews
and washers each.
102.Install the boom in accordance with the INSTALLATION
procedures outlined in this section.
Installation
NOTE: The following procedure applies to a boom totally
removed from the crane.
1. Attach an adequate lifting device to the boom and
suspend the boom over the machine.
2. Lower the boom into position and align the boom pivot
shaft mounting holes for installation of the pivot shaft to
the superstructure assembly.
3. Lubricate the pivot shafts and related pivot bushings in
the boom assembly and the turntable weldment.
4. Block the boom in place.
5. The boom may need to be raised or lowered to aid in the
installation of the pivot shafts. Remove the hoses from
the counterweight removal cylinder, match up the quick
disconnects of the hoses to the disconnects on the pivot
shaft removal cylinder.
6. Activate the cylinder to install the pivot shafts. Ensure
the pivot shafts seat fully in the pivot bushings in the
boom assembly and the turntable weldment; the pivot
shafts are stepped because the bushings are of different
diameters.
7. Remove the hoses from the pivot shaft cylinder. Match
up the quick disconnects of the hoses to the disconnects
on the counterweight removal cylinder.
8. Install the two pivot lock weldments to secure the pivot
shafts to the turntable weldment. Fasten them to the
pivot shafts with capscrews and washers.
9. Lubricate the upper lift cylinder pin and related bushings
in the lift cylinder rod end and the boom’s lift cylinder
attach lugs.
10. Using the lifting device attached to the boom, lower the
boom onto the lift cylinder rod end. Activate the crane’s
hydraulic system and align the lift cylinder rod end with
the boom’s lift cylinder attachment lug holes as needed.
11. Using the hand pump located on the left side of the
boom, insert the pump lever (found in cab) into the hand
pump. Turn the pump flow control lever
counterclockwise and pump the pump lever until the
upper lift cylinder pin pins the rod end of the lift cylinder
to the boom’s lift cylinder attachment lugs, and the upper
lift cylinder pin’s flange portion fits completely against
DANGER
The boom assembly must be rotated 180° right side up to
install on crane.
DANGER
A rollover fixture with webbing is recommended to rotate
boom and sections. Chains are not recommended. If a
rollover fixture is not available, rotate sections using
adequate support with webbing.
DANGER
Ensure blocking and lifting devices are capable of
supporting the boom assembly.
DANGER
Block the boom before doing any work under the boom.
DANGER
Failure to properly support the boom lift cylinder may
result in death or injury to personnel.
DANGER
If the hydraulic system must be activated to extend or
retract the lift cylinder, ensure the rod end is properly
aligned with the lift cylinder attach fitting.
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