SERVICE 1400H OPERATOR AND SERVICE MANUAL
5-32 Published 10-30-2014 Control # 040-09
FIVE SECTION BOOM ASSEMBLY
1. Assemble sheaves into 5th section sheavecase. Top
sheave is to be installed to the left hand side of the boom
with the spacers to the right hand side.
2. Attach rear wear pads to the bottom of the 5th section.
Using loctite 243 blue, Loctite all wear pad mounting
capscrews,
3. Position 5th section boom in front of the 4th section
boom ready to slide together. Route 3/4/5 extend cables
thru 4th section boom, with the threaded end of the
cable at the rear of the 4th section and the button end
out the front, loop the front button end of the 3/4/5 cable
beyond it's anchor point on the 5th section and install
button end into 5th section boom.
4. Install 5/4/3 retract cable button end into anchor point in
5th section and install keeper plate and capscrews,
keeper plate will lock both the extend and retract cables
in place. Coil 5/4/3 retract cables temporarily into 5th
section
5. Install 5th section into 4th section approximately 3 ft
(100 cm). Take care not to damage 3/4/5 extend cables.
They should be laying on the extended lip of the bottom
plate of the 5th section.
6. Install 3/4/5 extend sheave pins and bearings into the 3/
4/5 extend sheaves. Install wear plugs into the holes on
each side of the extend sheaves. Loop 3/4/5 extend
cables around the 3/4/5 extend sheaves and slide the
sheaves between the 4th and 5th boom sections, make
certain the grease hole in the pin is orientated correctly
before attaching pin to 4th section.Install countersunk
capscrews attaching 3/4/5 extend sheave pins to 4th
section.
7. Raise the 5th section against the top of the 4th, and
install the bottom wear pads between the 4th and 5th,
lower 5th section onto pads.
8. Install side wear pads with appropriate shims on front
inside of the 4th section boom, Install upper spacer bar
and cable guide with wear pad and related hardware on
the top of the 4th section. Shim according to calibration
instructions, or as pads were originally removed and
tagged.
9. Push the 5th section completely inside the 4th section
until it bottoms out on the doubler plates in the rear of the
4th, keep 3/4/5 extend cables tight when installing
section. A scribe mark on the 5th at full retraction will aid
in cable tensioning for proper boom sequence later.
10. Uncoil 5/4/3 retract cables out of 5th section, assemble
4th section retract sheaves and pins into the inside of
the 4th section rear, using proper hardware and Loctite
243, reeve cable over sheave installing upper keeper
capscrew and lower rear pad, this pad serves as a cable
keeper, lower pad and side pad for the rear of the
section.
11. Install 4/3/2 retract cable button end into anchor point in
4th section and install keeper plate and capscrews. This
keeper plate is installed temporarily to keep the button
ends in place during this phase of the assembly, it will
need to come back out during cylinder and 2/3/4 extend
cable installation. Coil 4/3/2 retract cables temporarily
into 5th section
12. Assemble top rear wear pads with the cam plates to the
top of the 5th section. The wear pad on each side of
the top/rear of the boom can be adjusted over a range of
3/16 in (4,8 mm) by rotating, end for end, the wear pad
and plate or the wear pads and plate independently. This
is possible because the holes in these parts are offset
from the center. The holes are 0.06 in (1,5 mm) off
center in the plate and 0.03 in (0,8 mm) off center in the
wear pad, Various combinations of rotation of these
parts allow this adjustment.
13. Pull threaded ends of 5/4/3 retract cable, now under the
4th section, towards front of boom.
14. Position 4th-5th section in front of 3rd section, ready for
assembly. Route 5/4/3 retract cables to allow easy cable
movement as the sections slide together.
15. Slide 4th-5th section into 3rd boom section
approximately 36 in (90 cm) keep 4th-5th sections
suspended to avoid damage to 5/4/3 retract cables.
16. Assemble bottom wear pads on 3rd section pad plate,
raise 4th-5th section high enough in 3rd to allow plate
with pads to slide between the sections, place retract
cables in the grooves in the bottom pad plate, as boom
sections are slid together, retract cables will pull thru
these grooves, use appropriate hardware and fasten
pad plate to the bottom plate of the 3rd section.
3/4/5 EXTEND CABLE
4TH SECTION BOOM
CABLE THREAD
CABLE BUTTON
CABLE ANCHOR
4TH SECTION BOOM
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