15
20
INSTRUCTIONS
(continued)
Connect the above assembly to the loader arms using
the bottom hole in the channel and attach the upper con-
trol cylinder to the top hole in the lift channels. Center the
main frame (side to side) with your loader arms and
tighten the four (4)
5
/
8
” x 3” U-Bolts.
ASSEMBLY
(continued)
CAUTION!
To help prevent personal injury, stand clear of frame
and loader. Keep feet away from underside of main
frame.
FOR MANUAL ADJUSTED UNITS –
(HPD-16 MFL and HPD-20 MFL)
1. Attach the forward extension frame to the main frame.
The forward extension frame can be located anywhere
on the main frame as long as it doesn’t interfere with
the loader mounting brackets. It is suggested to locate
the forward extension frame on the left side so that the
post driver will be offset.
2. Raise the loader about four feet off the ground and
install the adjustable legs. The adjustable legs will pro-
vide stability to the driver as they will minimize move-
ment from front tire bounce and looseness in all the
loader pivot joints. The legs will also allow the unit to
be self standing for storage.
Lower the loader down on the legs before proceed-
ing with assembly.
3. Attach the base mounting plate assembly to the for-
ward extension frame using six (6)
1
/
2
” – 13 NC x 1
1
/
2
”
hex head bolts, nuts and lock washers.
4. Prepare the driving ram for attaching to the manual
base mount. To do this, first lower the driving ram to its
lowest transport position. The driving ram is shipped in
the upper transport position for compactness. To lower
the ram, pull the transport lock pin, allow the ram to
lower (approximately 10 inches) and replace the
transport lock pin. This should be done with the Driver
laying on the shipping pallet. The ram is spring loaded
downward. Stand clear of the ram when the pin is
removed (see Figure A).
NOTE:
This step of
repositioning the driving ram is necessary in order to
make the mounting bolts at the correct height when
the unit is stood upright for the next step.
5. Attach the driving ram assembly to the manual adjust-
ment base plate assembly. A chain hoist or forklift can
be used to stand the driving ram assembly upright to
its normal working position. Take care not to let the
chain damage the hydraulic cylinder when lifting the
unit. Once the ram assembly is upright, the tractor can
be positioned to align the driving ram assembly to the
manual adjustment base. Align the four (4)
5
/
8
”
diameter bolts already in the driving ram assembly
with the four (4) holes in the base mount channel
assembly and secure with
5
/
8
– 11 NC nuts and lock
washers provided.
6. Install the hydraulic package. Refer to Figure B for cor-
rect location and orientation of components. Use a
good grade hydraulic thread sealant at all pipe thread
connections. (Do NOT use Teflon tape sealer.)
Do NOT use thread sealant on O-ring fittings.
NOTE:
Install the O-ring to pipe thread adapters in the
valve ports as shown in Figure B.
FIG. A
FIG. B
RAM CONTROL VALVE
Connect the
3
/
4
” I.D. x 24” long hose from the control
valve work port to the Post Driver hydraulic cylinder
port.
MAINTENANCE AND
ADJUSTMENTS
Make certain the safety and instruction decals are
attached to the Post Driver. If they are lost, damaged, or
painted over, order replacements.
WARNING!
Before servicing the machine, engage the parking
brake or place the transmission in “Park,” shut off the
tractor and remove the key. Relieve all hydraulic
pressure in lines.
HYDRAULIC VALVE
The hydraulic control valve supplied with the Post Driver
is “convertible” to accommodate both open-center and
closed-center tractor hydraulic systems. Most John
Deere and some other late model tractors use closed-
center hydraulic systems. Consult your tractor owner’s
manual (specifications section) or your tractor dealer.
The control valve is shipped “ready” for open-center
hydraulic systems.
NOTE: Failure to make the control valve compatible
with your tractor hydraulic system will cause the
hydraulic oil to overheat.
VALVE CONVERSION INSTRUCTIONS
The conversion plug for making the control valve com-
patible with closed-center hydraulic systems is shipped in
the hardware box (see Figure I).
Remove the large open-center plug and store it in a safe
place. Install the optional closed-center plug from the
hardware box. Be sure the O-ring and seal are on the
plug before insertion. DO NOT use a thread sealant on
the conversion plug.
FIG. I
If the machine is used in heavy duty conditions, the
maintenance operations must be carried out more
frequently.
Thoroughly clean the grease zerks before servicing.
Dirt mixed with lubricant will rapidly wear parts and
destroy bearings. Keep it clean.
Periodically check all bolts to make sure they are tight
(except those that are supposed to be loose).
Check hydraulic hoses. Make sure they are not chafed
or pinched. Replace any damaged hose.
Check hydraulic hoses and fittings for leaks. Repair any
leaks immediately. Never use your hand to check for a
hydraulic leak when system is under pressure.
Replace any worn or damaged parts immediately. Do
not use post driver attachment with any damaged parts.
WARNING!
Always stop the tractor, set brake, shut off engine,
remove key, and lower loader to ground before
attempting to service. Never leave equipment unat-
tended with engine running.
Do not get under machine to make measurements
or adjustments without securely blocking implement
first.
WARNING!
Do not work under a raised loader unless it is
securely blocked or held in position. Do not depend
on the hydraulic system to hold loader and attach-
ment in place.
WARNING!
MAKE SURE THAT ALL OPERATING AND SERVICE
PERSONNEL KNOW THAT IN THE EVENT
HYDRAULIC FLUID PENETRATES THE SKIN, IT
MUST BE SURGICALLY REMOVED WITHIN A FEW
HOURS BY A DOCTOR FAMILIAR WITH THIS FORM
OF INJURY, OR GANGRENE MAY RESULT.
OWNER SERVICE
