Full Text Searchable PDF User Manual
WG24 STUMP GRINDER
OWNER’S MANUAL
WG24
22-Nov-2016
TABLE OF CONTENTS
INTRODUCTION ---------------------------------------------------------------------------------- 2
INTENDED USE ----------------------------------------------------------------------------------- 3
TECHNICAL SPECIFICATIONS -------------------------------------------------------------- 3
GENERAL SAFETY RULES ------------------------------------------------------------------- 4
PERSONAL SAFETY ---------------------------------------------------------------------------- 5
TOOL USE AND CARE -------------------------------------------------------------------------- 6
STUMP GRINDER ASSEMBLY --------------------------------------------------------------- 7
STUMP GRINDER SET-UP PROCEDURES ---------------------------------------------- 8
TRIMMING THE PTO SHAFT
-------------------------------------------------------- 8
PTO SHAFT CLUTCH RUN IN
------------------------------------------------------ 9
EQUIPMENT OPERATION --------------------------------------------------------------------- 10
CHAINSAW HOLDER --------------------------------------------------------------------------- 11
STORING THE STUMP GRINDER ----------------------------------------------------------- 11
MAINTENANCE ----------------------------------------------------------------------------------- 12
REPLACING TEETH ----------------------------------------------------------------------------- 12
REPLACING BEARINGS ----------------------------------------------------------------------- 13
PARTS LIST ---------------------------------------------------------------------------------------- 15
PART DIAGRAMS -------------------------------------------------------------------------------- 16
NOTES ----------------------------------------------------------------------------------------------- 17
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INTRODUCTION
Congratulations on your purchase and welcome to Woodland Mills. This manual gives you the
necessary information about your machine so you will be able to use it properly. The entire
manual must be read and understood before you start using the machine. If any questions
should arise that are not covered by this manual, please contact Woodland Mills.
This machine is designed for certain applications only. We strongly recommend this machine is
not modified and/or used for any application other than that for which it was designed. If you
have any questions relative to a particular application, DO NOT use the machine until you have
first contacted us to determine if it can or should be performed on the product.
For technical questions and replacement parts, please contact Woodland Mills.
OWNER'S RECORD
Please take a moment to record the following information about your stump
grinder. If you need to call for assistance, please be ready to provide your
model number. This information will allow us to help you more quickly when
you call.
MODEL NUMBER
SERIAL NUMBER
DATE OF PURCHASE
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INTENDED USE
This stump grinder is designed for grinding stumps using a tractor PTO at 540 RPM.
TECHNICAL SPECIFICATIONS
Recommended HP
20 HP - 45 HP
Cutting Wheel
24" (610mm)
Number of Teeth
34
Tooth
Grade 8.8 Carbide Steel Bolt in
Tooth Torque Specification
160 ft-lbs (215 Nm)
Required PTO Speed
540 RPM
Maximum Cutting Depth Per Pass
5" (127mm)
Maximum Depth Below Grade
6" (152mm)
Shipping Weight
470 lbs (213 kg)
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GENERAL SAFETY RULES
NOTE:
All Federal and State laws and any regulation having jurisdiction covering the safety
requirements for use of the machine take precedence over the statements in this manual. Users
of this machine must adhere to such regulations.
Only people that have read and understood these instructions are able to use the stump grinder.
Inspect the stump grinder and tractor at the beginning of every working day and repair any
defects.
Stop the engine and make sure that the machine will not start accidentally while repairing
defects or doing maintenance.
Do not remove the stump grinders safety devices or make them inactive.
Always locate buried wires, cables, and pipelines before grinding.
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WARNING!
Read and understand all instructions. Failure to follow all instructions
listed below may result in electric shock, fire and/or serious injury.
WARNING!
The warnings, cautions, and instructions discussed in this instruction
manual cannot cover all possible conditions or situations that could
occur. It must be understood by the operator that common sense and
caution are factors which cannot be built into this product, but must
be supplied by the operator.
PERSONAL SAFETY
Stay alert,
watch what you are doing and use common sense when operating the machine. Do
not use the machine while you are tired or under the influence of drugs, alcohol or medication. A
moment of inattention while operating machines may result in serious personal injury.
Dress properly.
Do not wear loose clothing, dangling objects, or jewelry. Keep your hair,
clothing and gloves away from moving parts. Loose clothes, jewelry or long hair can be caught in
moving parts. Air vents often cover moving parts and should be avoided.
Use safety apparel and equipment.
Use safety goggles or safety glasses with side shields
which comply with current national standards, or when needed, a face shield. Use a dust mask
in dusty work conditions. This applies to all persons in the work area. Also use safety shoes,
hardhat, gloves, dust collection systems, and hearing protection when appropriate.
Do not over reach.
Keep proper footing and balance at all times.
Remove adjusting keys or wrenches
before connecting to the power supply or turning on the
tool. A wrench or key that is left attached to a rotating part of the tool may result in personal
injury.
Never conduct any maintenance or make any other adjustments when the engine is
running.
Always shut the engine off, remove the ignition key, and keep the engine off before
carrying out any of the aforementioned procedures. Consult your engine manual for safe
shutdown procedures to prevent accident ignition.
Never
allow passengers on the stump grinder.
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TOOL USE AND CARE
Always
be sure operator is familiar with proper safety precautions and operation techniques
before using machine.
Do not force the machine.
Machines do a better and safer job when used in the manner for
which they are designed.
Storing the machine.
When the machine is not in use, store it in a dry, secure place or keep
well covered and out of the reach of children. Inspect the machine for good working condition
prior to storage and before re-use.
Maintain the machine.
It is recommended that the general condition of the machine be
examined before it is used. Keep the machine in good repair by adopting a program of
conscientious repair and maintenance in accordance with the recommended procedures found
in this manual. If any abnormal vibrations or noise occurs, turn the machine off immediately and
have the problem corrected before further use.
Cleaning.
Use a pressure washer to clean the carbide teeth while taking care not to pressure
wash the bearings as this may introduce water into areas of the machine that will result in
malfunction or damage.
Use only accessories that are recommended
by the manufacturer. Accessories that may be
suitable for another machine may create a risk of injury when used on this machine.
Always
operate the machine with all safety devices and guards in place and in working order.
DO NOT modify or make changes to safety devices. DO NOT operate the machine if any safety
devices or guards are missing or inoperative.
Never leave the machine running unattended.
Never use the machine to grind anything other than stumps
or for any purpose other than
grinding stumps as described in this manual.
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STUMP GRINDER ASSEMBLY
1.
Install the deflector plate using the 3 supplied nuts, bolts, and washers.
2. Install the manual tube using the 2 supplied bolts and washers.
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STUMP GRINDER SET-UP PROCEDURES
TRIMMING THE PTO SHAFT
The stump grinder is shipped with a slip clutch PTO shaft that can be fitted to most tractors. The
PTO shaft may need to be trimmed depending on your tractor and configuration. Follow the below
steps to ensure that the PTO shaft is fitted to your tractor correctly.
Note that the slip clutch side of
the PTO shaft should mount to the stump grinder.
1. Attach the stump grinder to the tractor, but do not install the PTO shaft.
2. Raise the stump grinder using the tractors 3 point hitch system so that the shaft on the tractor is
level with the shaft on the stump grinder.
3. Measure the distance between the locking grooves on the shaft of the tractor and stump grinder
(
A
) as shown below.
4. Measure the distance between the locking pins on the PTO shaft itself when it is in the
compressed/shortest length (
B
) as shown below.
5. If (
A
) is at least 1” longer than (
B
), the PTO shaft will not need to be cut. It is recommended that
the shaft not be used if any less than 3” of overlap between the two halves of the PTO shaft is found
when the equipment is in the operating position.
6. If dimension (
B
) is longer than (
A
), the PTO shaft will need to be cut. The below equation may be
used to calculate the correct amount to trim.
(B-A) + 1 INCH = C (AMOUNT TO CUT)
7
.
Once (
C
) has been calculated; this amount will need to be cut off of
BOTH
halves of the PTO
shaft.
8. After both halves of the PTO shaft have been cut, use a file to remove any burrs or sharp edges
and slide the shaft together ensuring it telescopes in and out freely. The PTO shaft can now be
attached to the stump grinder and tractor, ready for use.
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STUMP GRINDER SET-UP PROCEDURES
PTO SHAFT CLUTCH RUN IN
The stump grinder is shipped with a slip clutch PTO shaft. Follow the below steps before using your
stump grinder to ensure that the PTO shaft clutch plates are set properly.
Note that the slip clutch
side of the PTO shaft should mount to the stump grinder.
1)
Using a pencil or other marker, scribe a line across the exposed edges of the clutch plates.
2)
Measure the “spring compressed length” and note it on a piece of paper.
3)
Loosen all 8 spring tension nuts uniformly until spring load is low enough that the clutch slips
freely with PTO engaged.
4)
Start tractor and engage PTO for 2-3 seconds to permit slippage of clutch surfaces. Disengage
PTO, then re-engage a second time for 2-3 seconds. Disengage PTO, shut off tractor, and
remove key. Wait for all components to stop before removing the PTO shaft from tractor.
5)
Inspect clutch and ensure that the scribed markings made on the clutch plates have changed
position. Slippage has not occurred if the two marks on the clutch plates are still aligned. A clutch
that has not slipped must be disassembled to separate the clutch plates.
6)
Tighten all 8 nuts back to achieve the original “spring compressed length” dimension. Clutch is
now ready for use.
7)
The clutch should be checked during first hour of use and periodically each week. Excessive
clutch plate slipping, burning odour or smoking should not be noted during use.
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Spring Compressed
Scribe Marks
Spring Tension
Nuts
EQUIPMENT OPERATION
1. Wear heavy-duty work gloves, ANSI-approved goggles behind a full face shield, and steel-toed
work boots.
2. Securely attach the stump grinder to the tractors 3 point hitch system and install the PTO shaft.
3. Remove the stabilizer pin prior to operation.
4. Move the legs up inside the tubes so they are out of the way and install the retaining pins to hold
the legs in place.
5. Back over a stump and lower the stump grinder so it will take 1" to 4" (25-100mm) per pass.
Always make sure the grinder is cutting properly and not jumping around erratically.
6. Once the stump is at ground level, continue to take 1" to 4" (25-100mm) passes until the stump
and roots are 4" to 6" (100-150mm) below grade.
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EQUIPMENT OPERATION
7. During use, it is important to never let the stump grinder sway beyond an angle that will allow the
PTO shaft to come apart. Do not operate the stump grinder with less than 3” (75mm) of overlap
between the two halves of the PTO shaft. If the stump grinder begins to sway, it means that the
tractor has advanced faster than the grinder can remove material or that too much material is
being removed at once. When this is observed, immediately stop moving forward and position
the tractor and stump grinder in a manner as so that it is in the vertical position again.
CHAINSAW HOLDER
Use the chainsaw holder only to transport a chainsaw. Remove the chainsaw from the
chainsaw holder prior to grinding stumps.
STORING THE STUMP GRINDER
1.
Lower both support legs and insert the retaining pins.
2.
Insert the stabilizer pin.
3.
Lower the stump grinder onto a flat, level surface.
4.
Disconnect the PTO shaft.
5.
Remove the stump grinder from the tractors 3 point hitch system.
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Sway
Vertical
MAINTENANCE
1. Proper and routine maintenance is critical to operator safety, achieving proper stump grinding
results and in prolonging the life of the machine.
2. For cleaning and maintenance of the stump grinder, switch off the tractor PTO shaft and turn the
engine off.
3. Inspect the unit before each use for loose nuts and worn cutting teeth. Also clean any build up of
debris.
4. After 2 hours of operation, check for loose nuts and worn cutting teeth. Tighten and replace as
necessary.
5. Grease the bearings and the pivot pins on the main housing as needed before each use. Do not
over grease the the bearings as this will blow out the seals and cause premature bearing failure.
6. Inspect the clutch plates on the PTO shaft periodically to ensure that they are not seized
together. Refer to “
PTO Shaft Clutch Run In
” in the “
Stump Grinder Set Up Procedures
”
section of the manual.
REPLACING TEETH
1.
Disconnect the PTO shaft from the tractor and set the stump grinder on a flat and level
surface.
2.
Remove the lock nut using a 24mm wrench or socket.
3.
Remove the cutting tooth.
4.
Install a replacement tooth and lock nut using a torque wrench set to 160 ft-lbs (215 Nm)
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REPLACING BEARINGS
1.
Remove the 4 lock nuts from the bolts using an 18mm and 19mm socket or wrench on the front
bearing only.
2.
Slide the flywheel assembly forward and down.
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3. Remove the lock nuts and bolts from the remaining bearing and slide the front bearing forward off
the flywheel shaft.
4. Installation is the reverse of removal. Tighten the lock nuts to 65 ft-lbs (88 Nm).
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PARTS LIST
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WG24 Stump Grinder Part List
1
Back Frame Assembly
1
23
Chainsaw Holder B
1
2
Pin
1
24
Threaded Knob
M10 x 45
1
3
Pan Head Bolt
M5 x 20
2
25
Hex Bolt
M10 x 35
2
4
Lock Washer
M5
2
26
Deflector Plate
1
5
Manual Tube
1
27
Hex Bolt
M8 x 25
3
6
Lock Pin
2
28
Flat Washer
M8
3
7
Back Support Leg Assembly
2
29
Rubber Mat B
1
8
Pin
2
30
Locking Nut
M8
5
9
Linch Pin
12 x 80
3
31
Flat Washer
M10
8
10
Hex Bolt
M8 x 30
2
32
Hex Bolt
M10 x 25
2
11
Spacer
2
33
Locking Nut
M10
4
12
Pin Assembly
2
34
Locking Nut
M16
34
13
Housing Assembly
1
35
Grease Nozzle
M6
2
14
Cotter Pin
4 x 70
1
36
PTO Shaft
1
15
Stabilizer Pin
1
37
Flat Washer
M5
2
16
Locking Nut
M12
8
38
Flat Washer
M12
8
17
Flange Bearing
UCF210
2
39
Flywheel Shaft
1
18
Hex Bolt
M12 x 45
8
40
Flywheel
1
19
Tungsten Carbide Tooth
34
41
Socket Head Cap Bolt
M16 x 60
4
21
Chainsaw Holder A
1
42
Locking Nut
M16
4
22
Rubber Mat A
2
43
Washer
M16
4
DIAGRAM
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NOTES
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NOTES
