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TRACTOR REQUIREMENTS
AND PREPARATION
Both the manual and hydraulic positioning front loader
post driver mounts are designed to fit most farm tractor
double-cylinder front-end loaders. Optional brackets are
available to fit most popular bucket quick attach front-end
loaders.
NOTE:
The tractor should be at least 40-50 hp in size
and the loader needs to have sufficient lift capacity to
handle the weight of the post driver and mount.
NOTE:
The Post Driver front loader mount is only
recommended for tractors equipped with a rollover
protective structure (ROPS) or cab.
NOTE:
Worksaver does
NOT
recommend the use of any
loader attachment on tractors with a front tricycle wheel
arrangement.
CAUTION!
Be sure your tractor and loader is in good condition.
Read all the safety precautions and make sure all
tractor operators are familiar with the safety rules of
operation.
CAUTION!
A heavy load can cause instability in driving a
tractor. Make sure the rear of the tractor is properly
counterbalanced with weights or a bale. Always drive
slowly – especially around turns. An unstable tractor
could steer badly and possibly tip over, causing
injury or death.
INSTRUCTIONS
These instructions are for the models HPD-16 MFL,
HPD-16 HFL, HPD-20 MFL, and HPD-20 HFL Front
loader mounted hydraulic post drivers.
The models HPD-16 MFL and HPD-20 MFL are manu-
ally adjusted post drivers. The manual adjusting base
have two threaded cranks to set the side to side and front
to back positioning of the driving ram.
The models HPD-16 HFL and HPD-20 HFL have the
driving ram positioning controlled hydraulically. A two
spool hydraulic valve controls the front to back and side
to side movement for aligning to a vertical position. A
separate single spool valve controls the raising and low-
ering of the driving ram.
Both the manual and the hydraulic positioning mounts
allow the driver to be mounted near the center or offset
(right or left) to the side of the tractor. It is suggested to
assemble the front loader mount offset to the left side as
it requires fewer steps from the tractor seat to operating
the post driver.
This also has easier positioning for driving posts along
ditch banks and existing fence lines.
The models HPD-16 MFL and HFL weigh 780 lbs. and
1018 lbs. respectively. It is recommended that these
models be used on tractors of at least 40 hp and that a
rear counter-weight of approximately 1000 lbs. be used.
The models HPD-20 MFL weighs 937 lbs. and the
model HPD-20 HFL weighs 1175 lbs. It is recommended
that these models be used on Category II tractors (50
HP +) and that a rear counter-weight of approximately
1000 lbs. be used.
Rear wheel weights, rear tire ballast, and size of tractor
being used will determine the counter-weight required (if
any).
The operator is responsible for the safe operation of this
equipment. The operator must be properly trained.
Operators should be familiar with the tractor, loader and
loader attachment, and all safety practices before start-
ing operation. Read the safety rules and safety signs on
pages 3-12.
The Models HPD-16 MFL/HFL and HPD-20 MFL/HFL
require a tractor a with a hydraulic system capable of 6-
8 GPM and at least 1500 psi.
NOTE:
Loaders with only one hydraulic cylinder in the
center of the loader to tilt the bucket or attachment may
be used with the addition of an optional center bracket
(order bracket #830320).
Be sure your tractor is in good working order, particular-
ly the hydraulic system, prior to using the Post Driver. Be
sure the tractor hydraulic oil and filter have been serviced
according to the tractor manufacturer’s recommenda-
tions. The return oil from the driver must be connected
directly to the tractor hydraulic fill opening –
NOT THE
THE TRACTOR REMOTE OUTLET
. Special return
fittings are available, when required, for many popular
tractors. Check with your dealer for an application list.
Refer to your tractor owner’s manual or dealer to
determine if your tractor has an OPEN or CLOSED
hydraulic system. The hydraulic valve on the driving ram
MUST match your tractor hydraulic system. This valve is
convertible and is shipped ready for OPEN center
systems. See the “maintenance and adjustment” section
of this manual for conversion instructions.
SERVICE INSTRUCTIONS
(continued)
CAUTION!
When traveling on public roads, whether at night or
during the day, use accessory light and devices for
adequate warnings to operators of other vehicles.
Comply with all federal, state and local laws.
Carry load low.
Check visibility. If visibility is impaired, reduce speed or
consider other means of bale transport.
Allow for additional length of loader on tractor while
turning.
Select a safe ground travel speed when transporting from
one area to another. When traveling on roadways, trans-
port in such a way that faster moving vehicles may pass
you safely.
When traveling over rough or hilly terrain or when making
turns, slow down and use extra care.
Read all the safety warnings in the front of the manual.
TRANSPORTING
STORING THE POST DRIVER
Lower the ram to the lowest position and engage the
transport lock pin. This position will have the hydraulic
cylinder rod fully retracted into the cylinder and will be
self-protecting.
Smear grease over the exposed portion of the plated
hydraulic cylinder rod to prevent pitting and rust from
forming.
It is recommended to apply grease or oil to any exposed
portion of the tilt cylinders or threaded cranks to help
prevent rust from forming.
Be sure to cap the open return line hose end to prevent
contamination during storage. Lubricate all grease
fittings prior to storage.
Inside storage is preferred to prevent deterioration of the
springs, hoses, etc. For safety, the Driver should be
securely blocked for stability.
To store the front loader post driver mount with
adjustable legs, locate the transport locking pin into the
higher hole location in the ram and then adjust legs to
same height.
Make sure driver will be located on a solid surface and
in a location away from children, animals, or traffic area.
HPD-16 MFL
HPD-16 HFL
HPD-20 MFL
HPD-20 HFL
(Manual)
(Hydraulic)
(Manual)
(Hydraulic)
Maximum Post Size . . . . . . . . . . . . . . . . . . . . . . . .
7 in. x 9 ft.
8
3
/
4
in. x 10 ft.
Impact at Full Stroke . . . . . . . . . . . . . . . . . . . . . . .
32,000 lbs.
80,000 lbs.
Impact at Half Stroke . . . . . . . . . . . . . . . . . . . . . . .
16,000 lbs.
40,000 lbs.
Minimum Tractor Size . . . . . . . . . . . . . . . . . . . . . .
40 PTO hp
50 PTO hp
Minimum Hydraulics Required . . . . . . . . . . . . . . .
3 - 4 gpm
6 - 8 gpm
Drive Cylinder Size . . . . . . . . . . . . . . . . . . . . . . . .
2” x 56”
2” x 68”
Operating Range (above ground) . . . . . . . . . . . . .
50” to 116”
50” to 128”
Tilt Adjustment – front/back . . . . . . . . . . . . . . . . . .
20°
17°
20°
17°
Tilt Adjustment – side/side . . . . . . . . . . . . . . . . . .
20° each way from vertical
No. of Cylinder(s)/Size . . . . . . . . . . . . . . . . . . . . . .
Two 3” x 6”
Two 3” x 6”
Shipping Weight . . . . . . . . . . . . . . . . . . . . . . . . . .
780 lbs.
1018 lbs.
937 lbs.
1175 lbs.
POST DRIVER SPECIFICATIONS
WARNING!
Power unit must be equipped with ROPS or ROPS
cab and seat belt. Keep seat belt securely fastened.
Falling off power unit can result in death from being
run over or crushed. Keep foldable ROPS systems in
“locked up” position at all times.
