Mounting of the
Boom

A hole must be
drilled or burned into
the loader bucket at the center and back 18" from the leading
edge
of the loader bucket. Once the hole has been drilled, the boom is
installed by holding it as shown, threading the square washer onto
the all thread, pushing it through the hole and into the boom.
Then
fasten the bottom nut and tighten just finger tight.
In the case that no boom mover will be used then a
"U" bolt should be
installed to secure the boom from moving. This requires two holes to be
drilled or burned into the loader bucket preferably about 1" back from
the leading edge. Or the channel iron can be secured with two 1/2"
bolts as shown below.
Boom mover options
First what
cylinder to use
As a maximum, it
takes approximately
1,000 lbs of force applied to the eyelet to move the boom all the way
out when the 16" bucket is full of moist soil. Using hydraulics,
a
2" cylinder will work but you must be careful not to overload the
eyelet when the boom is at the most outward position because this
cylinder will
have a force of about 4,000 lbs.
Using air, a 4" cylinder is the minimum. A cylinder with a 5"
bore works better. We have used a 5 hp compressor with a 20 gallon
tank on a 4" cylinder.
The cycle time is about 5 minutes using this cylinder. Also note that
using air does not allow the widening of the ditch because the air
recompresses and the cylinder can not keep the required force to the
side of the ditch.
Installing
the
cylinder
The cylinder brackets are two
parts. The stationary end bracket that bolts onto the bottom of the
loader
bucket and the moving end eyelet that bolts onto the channel iron. The
cylinder can be mounted on either side. It is suggested that you make
provisions for mounting the cylinder on both sides so that you can
swing the load left or right.
The bracket
requires two 1/2" holes to be drilled or burned into bottom of
the
loader bucket. First position the boom vertically with the ForeHoe
bucket
off
so you
can reach your work. Move the ram on your cylinder out about 3"
before you start your layout work. This will allow a slight
over-movement when you move your boom back to the digging location.
Measure
the distance between the pins on your cylinder. Hold the bracket out
this distance on a horizontal line and mark the location of where
the holes go. Extend the cylinder and measure the distance between the
pins. Next move the boom to the outward position. Hold the bracket
where you located it before and measure to see if you have enough
stroke to move the bucket all the way out. The minimum
stroke for your cylinder
is about 9" . Modify if necessary, then
mount the bracket.
When installing the cylinder, pin the eyelet first
then slide the cylinder onto the bracket. Insert the cotter pin. Then
slip the eyelet bolt
into the hole on the channel and secure.
Alternate
method for moving the boom
The
view on the left/top (normal storage
configuration) shows the boom and Unitized winch assembly ready for
mounting onto the tractor as seen on the right/bottom. Once the three
holes
are burned/drilled the mounting and unmounting can be done in less than
5 minutes. If cable replacement is required, the winch plate is removed
from the boom and placed on the work bench where the "U" bolts can
be
relocated into existing holes that will help determine the correct
cable
length.
This method of moving
the boom seems the most favorable because it can swing the boom to
either side and most importantly, it allows the ForeHoe to be operated
independently of A.C. power
requirements. However, the winch requires that
you have a generator or alternator output of at least 80 amps.