Published 08-25-09, Control # 077-04 4-15
RT9130E SERVICE MANUAL BOOM
2. Install the locknut, washer, keyed washer, and shims (if
necessary) onto the boom nose sheave shaft with the
chamfer side out. Install the collar onto the opposite end
of the sheave shafts and secure in place with the bolt,
washer, and nut.
NOTE: If more than one shim is required, install an equal
amount on each side of the boom nose.
3. Tighten the locknut until the play in the entire assembly
is within 1 to 2 mm (0.03 to 0.06 in) total. Install shims as
necessary to achieve the correct dimension. Bend the
lockwasher tabs to secure the locknut in place.
4. Install the cable retainer pins into the upper and lower
part of the boom nose and secure in place with the hitch
pins.
Boom Assembly
NOTE: Apply Loctite 242 to the threads of all attaching
hardware except cable ends and cable lock nuts.
NOTE: Apply multipurpose grease (MPG) to all wear
surfaces.
NOTE: Use standard Grade 5 and/or 8 torque values
specified in Section 1- INTRODUCTION in this
Manual unless otherwise specified.
1. Install wear pads on the bottom of the upper telescope
cylinder support foot using two screws each.
2. Install the support foot and the sheave mounting
assembly on the front of the upper telescope cylinder
assembly, with four capscrews and washers. Attach the
support foot and the sheave mounting assembly
together using two capscrews and washers.
NOTE: The sheave shaft should be installed with grease
fitting hole to the left side.
3. Using the sheave shaft, install the sheave assembly in
the sheave mounting assembly, making sure the grease
fitting hole is toward the left of the assembly.
Secure the shaft and the cable guide with a plate and
two capscrews and washers on each side of the sheave
mounting assembly. Install grease fitting in the shaft and
apply grease.
4. Route the end of the five extension cables up and
around the upper telescope cylinder sheaves about one
foot on to cylinder. To aid in assembly, secure the cables
to the end of the cylinder by wrapping tape around the
cylinder.
5. Position the cable retainer plate on the front of the
sheave mounting assembly and secure with two
capscrews and washers.
6. If removed, install the two wear pads on the top of the
cable guide by using two flathead screws.
7. Install the other ends of the extension cables into the
sled weld, making sure the extension cables are not
crossed and twisted.
8. Install the plate cover on the sled weld and secure with
two capscrews and washers.
9. At the rear of the fly section, install the upper wear pad
grease line, connector and grease fitting on each side.
NOTE: The grease lines are designed to be used only on
one side or the other (i.e. RH or LH).
10. Install the three lower rear wear pads and shims on the
fly section with two flat head screws.
11. Route the two retract cables (threaded ends) through
the fly section to the front. Insert the threaded ends
through the holes on the front of the fly section and
install a hardened washer and two nuts on each cable
end.
12. Using an adequate lifting device, position the upper
telescope cylinder into the rear of the fly section.
13. Slide telescope cylinder assembly into the rear of the fly
section until foot support clears the gussets at the rear of
the fly section. Raising the rear of the fly and lowering
the rod end of the cylinders will aid in sliding these
together.
DANGER
When adjusting cables, hold the cable end and turn the
nut. Do not turn cable. Turning cable while adjusting will
result in damage or failure of cable.
DANGER
Install cables in their natural untwisted condition. Do not
twist cable. Twisting of cable will result in damage or
failure of cable.
DANGER
The boom assembly must be rotated 180° (upside down)
before performing any assembly or disassembly
procedures.
DANGER
A secure fixture that will prevent damage to the boom is
recommended to stabilize and hold the boom from moving
during insertion of section or sections.
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