Section 5: Operating Procedures
RBT4084, RBT4096 & RBT40108 Rear Blades 301-206M
11/27/18
21
Rear Blade Functions
WARNING
!
To avoid serious injury or death:
Never operate hydraulic cylinder(s) with blade in the ground
or under load. Improper use can result in loss of control and
damage the Rear Blade. Always lift blade up before operating
Grading
Place grade stakes if you intend to develop a specific
grade or soil level. Pivot moldboard to the desired angle,
lower blade to the ground, and set the tractor’s draft-link
height control to the desired position. Proceed forward at
a speed of no more than 2 to 4 mph. The blade should
immediately begin shaving the surface.
A blade full of material can be raised slightly so that
material can flow out evenly under the blade to effectively
shave off high spots and fill in potholes or depressions.
Loose soil can be smoothed out by pushing the soil with
the back of the moldboard while backing-up.
Edge work
Material close to fences, buildings, and other
obstructions can be graded by offsetting the moldboard
to the right or left beyond the tractor tire. Always make
certain end of blade is offset far enough to be visible to
the operator. Always keep a safe distance away from
obstructions, drive slowly when passing by them and stay
clear of them when turning. Always be aware that the
blade will make a wide swinging pattern in a turn and
always be ready to stop immediately to keep from hitting
an obstruction. Never hit an obstruction as this can
damage the blade and/or obstruction.
Ditch Work
The Rear Blade is good for making V-type ditches. Tilt
one end of moldboard down to desired ditching angle.
Offset that end to be in line with tractor’s rear tire and
pivot opposite end of moldboard back. The combined
angles, pivot, and offset, should be between 45
o
and 60
o
.
Operate tractor at slow speeds when cleaning a ditch or
removing snow. Be careful not to hit hidden solid objects
that can damage the Rear Blade. Always be ready to stop
immediately. Remember, the lighter the blade load, the
easier it is for the tractor to damage the blade.
Fill ditches by offsetting the blade beyond the tractor
wheel to keep the tractor out of the ditch. Angle blade to
move dirt towards and into the ditch while traveling
forward. Set blade depth as needed (see
instructions on this page when setting blade depth).
IMPORTANT:
The warranty shall not apply to
damage caused by misuse, abuse, or contact with
obstructions.
Backfilling
Backfilling is a process where the operator turns the
blade around 180
o
and pushes product while backing-up.
Be careful not to overstress the blade while backfilling as
load forces on the blade and frame increase when
backing up. To help protect the blade from damage,
lengthen tractor’s top center link until the blade will move
across the top of the ground without forcing itself into the
ground.
Adjust offset to be straight behind the tractor and set
blade angle at 90
o
(perpendicular to the Mainframe).
Keep load in the center of the blade and not on the end of
the blade. Don’t ram load with the blade and always
operate at slow speeds when backing-up. Be ready to
stop immediately if a solid object is hit.
Removing snow while backing-up is especially
dangerous as snow can hide solid objects and there is a
tendency to drive too fast to get the snow removal job
done. High speeds multiply forces exerted on the Rear
Blade.
Unhook Rear Blade
WARNING
!
To avoid serious injury or death:
When using the park stand, make sure it is fully down with wire
retaining pin fully inserted and wire retainer over end of pin.
If not, the implement could fall.
Unhook Rear Blade from the tractor as follows:
1.
Park on a level solid hard surface. Place tractor gear
selector in park and set park brake.
2. Lower parking jack and secure with hitch pin.
3. Lower blade and parking jack onto level ground or
onto blocks supporting the unit just above ground.
4. Shut tractor engine off and remove key.
5. If coupled to hydraulic cylinder(s), move hydraulic
control lever(s) back and forth several times to
reliever hydraulic pressure at the couplings and then
unhook couplings from the tractor and store on the
Rear Blade frame to keep couplings up out of the dirt.
6. If necessary, adjust length of upper center 3-Point
link until the hitch pin can be removed from the hitch
frame.
7.
Remove hitch pins from the lower 3-Point arms at the
hitch frame.
8. Reinstall hitch pins and linchpins in the Rear Blade
hitch frame for storage.
9. Refer to “
23 when storing the Rear Blade for a long time.
