Degelman ROCK DIGGER RD320 Programming manual

OPERATOR & PARTS
MANUAL
ROCK DIGGER
RD320
Serial Numbers above 1291
143345 v1.2
DEGELMAN INDUSTRIES LTD.
BOX 830-272 INDUSTRIAL DRIVE,
REGINA, SK, CANADA, S4P 3B1
FAX [phone] PH 306.543.4447
1.800.667.3545 DEGELMAN.COM

DEGELMAN INDUSTRIES LTD.
BOX 830-272 INDUSTRIAL DRIVE,
REGINA, SK, CANADA, S4P 3B1
FAX [phone] PH 306.543.4447
1.800.667.3545 DEGELMAN.COM
IMPORTANT:
READ MANUAL
TABLE OF CONTENTS - OPERATORS SECTION
Introduction 1
Safety 2
Overview 5
Preparation 6 - 8
Operation 9
Transporting 10
Storage / Safety Decals 11
Troubleshooting 12
Service & Maintenance 13 - 21
TABLE OF CONTENTS - PARTS SECTION 23
Overview 23
Pole / Frame Components 24
Rear Assembly Components 25
Hydraulic Routing 26
Hydraulic Cylinders 27
Wheel Components 28
Warranty 29 - 30

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OPERATOR ORIENTATION - The directions left, right, front and rear, as mentioned throughout the manual,
are as seen from the tractor drivers’ seat and facing in the direction of travel.
Introduction
Left Side
Rear
Front
Right Side
CONGRATULATIONS Congratulations on your choice of a Degelman Rock Digger to complement your
farming operation. It has been designed and manufactured to meet the needs of a discerning Agricultural
market for the efficient removal of large buried rocks. Use this manual as your first source of information
about this machine. If you follow the instructions given in this manual, your machine will work well for
many years.
Safe, efficient and trouble free operation of your Degelman Rock Digger requires that you and anyone else
who will be operating or maintaining the Digger, read and understand the Safety, Operation, Maintenance
and Troubleshooting information contained within this Manual.
Keep this manual handy for frequent reference and to pass on to new operators or owners. Call your
Degelman Dealer if you need assistance, information or additional copies of the manual.

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The Safety Alert Symbol identifies important safety
messages applied to the Rock Digger and in this
manual. When you see this symbol, be alert to the
possibility of injury or death. Follow the
instructions provided on the safety messages.
The Safety Alert Symbol means:
ATTENTION!
BECOME ALERT!
YOUR SAFETY IS INVOLVED!
DANGER: Indicates an imminently hazardous situation
that, if not avoided, WILL result in death or serious injury
if proper precautions are not taken.
WARNING: Indicates a potentially hazardous
situation that, if not avoided, COULD result in death or
serious injury if proper precautions are not taken.
CAUTION: Indicates a potentially hazardous situation
that, if not avoided, MAY result in minor or moderate
injury if proper practices are not taken, or, serves as a
reminder to follow appropriate safety practices.
Why is SAFETY important to YOU?
3 BIG Reasons:
•Accidents Can Disable and Kill
•Accidents Are Costly
•Accidents Can Be Avoided
Note the use of the Signal Words: DANGER, WARNING, and CAUTION with the safety messages.
The appropriate Signal Word has been selected using the following guidelines:
SAFETY ALERT SYMBOL
SIGNAL WORDS
Safety

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1. Read and understand the Operator’s
Manual and all safety signs before
operating, maintaining or adjusting
the Digger.
2. Install and properly secure all shields and
guards before operating. Use hitch pin with a
mechanical locking device.
3. Have a first-aid kit available for use
should the need arise and know
how to use it.
4. Have a fire extinguisher available
for use should the need arise and
know how to use it.
5. Wear appropriate protective gear. This list
includes but is not limited to:
• A hard hat
• Protective shoes with slip resistant soles
• Protective glasses or goggles
• Heavy gloves
• Wet weather gear
• Hearing protection
• Respirator or filter mask
6. Clear the area of people, especially small
children, and remove foreign objects from the
machine before starting and operating.
7. Do not allow riders.
8. Lower rear arm and hook arm to ground, stop
tractor engine, place all controls in neutral,
set park brake, remove ignition key before
servicing, adjusting, repairing or unplugging.
9. Review safety related items with all operators
annually.
YOU are responsible for the safe operation and
maintenance of your Degelman Rock Digger.
YOU must ensure that you and anyone else who
is going to operate, maintain or work around the
Rock Digger be familiar with the operating and
maintenance procedures and related SAFETY
information contained in this manual. This manual
will take you step-by-step through your working
day and alerts you to all good safety practices
that should be adhered to while operating this
equipment.
Remember, YOU are the key to safety. Good safety
practices not only protect you but also the people
around you. Make these practices a working
part of your safety program. Be certain that
EVERYONE operating this equipment is familiar
with the recommended operating and maintenance
procedures and follows all the safety precautions.
Most accidents can be prevented. Do not risk injury
or death by ignoring good safety practices.
• Rock Digger owners must give operating
instructions to operators or employees before
allowing them to operate the unit, and at
least annually thereafter.
• The most important safety device on this
equipment is a SAFE operator. It is the
operator’s responsibility to read and
understand ALL Safety and Operating
instructions in the manual and to follow
these. All accidents can be avoided.
• A person who has not read and understood
all operating and safety instructions is
not qualified to operate the machine. An
untrained operator exposes himself and
bystanders to possible serious injury or
death.
• Do not modify the equipment in any way.
Unauthorized modification may impair the
function and/or safety and could affect the
life of the equipment.
• Think SAFETY! Work SAFELY!
Safety
SAFETY GENERAL SAFETY

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Overview
The Degelman Rock Digger is designed to
efficiently dig out large buried rocks and debris
from fields. Many of the features incorporated into
this machine are the results of suggestions made
by customers like you.
It is the owner’s or operator’s responsibility
to read this manual carefully to learn how to
operate the machine safely and how to set it to
provide maximum efficiency. Safety is everyone’s
business. By following safe operating practices, a
safe environment is provided for the operator and
bystanders.
The manual will take you step-by-step through
your working day. By following the operating
instructions in conjunction with a good
maintenance program, your machine will provide
many years of trouble-free service.
TO THE NEW OPERATOR OR OWNER
The Rock Digger consists of a hitch pole/frame unit,
a rear arm/tooth assembly, a hooking arm frame
and two tires.
The rear frame/tooth assembly is designed to do
the bulk of the rock removal while the hooking arm
is designed to cradle the rock for transporting the
obstacle.
PRINCIPLES OF OPERATION
Rock Digger Components
1. Pole/Frame Assembly
2. Rear Arm
3. Hook Arm
4. Jack
5. Rear Arm Cylinder
6. Hook Arm Cylinder
7. Tooth
8. Lock-up Chain
9. SMV Sign
1
3
7
2
4
59
6
8

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Preparation
Although there are no operational restrictions on
the Rock Digger when it is new, there are some
mechanical checks that must be done to ensure
the long term integrity of the unit. When using the
machine for the first time, follow this procedure:
It is extremely important to follow all of the
Break-In procedures especially those listed
in the “Before using” section below to avoid
damage:
Before using:
1. Read Safety Info. & Operator’s Manual.
2. Complete steps in “Pre-Operation Checklist”.
3. Lubricate both wheel bearings.
4. Check all bolt tightness.
After operating for 2 hours:
1. Retorque wheel bolts.
2. Check all hardwaretightness. Tighten as
required.
3. Check all hydraulic system connections.
Tighten if any are leaking.
After operating for 8 hours:
1. Repeat Step B.
2. Go to the service schedule as outlined in the
“Service & Maintenance” section.
BREAK-IN
OPERATING SAFETY
1. Read and understand the Operator’s Manual
and all safety signs before using.
2. Lower rear arm and hook arm to ground, stop
engine, place all controls in neutral, set park
brake and remove ignition key before servicing,
adjusting or repairing.
3. Keep hands, feet, hair and clothing away from
all moving and/or rotating parts.
4. Do not allow riders on the Rock Digger or
tractor during operation or transporting.
5. Clear the area of all bystanders, especially
children, before starting.
6. Be careful when working around or maintaining
a high-pressure hydraulic system. Ensure all
components are tight and in good repair before
starting.
7. Clean all reflectors, lights and the SMV sign
before transporting on a highway or public
road. Be sure to check with local highway
authorities and comply with their lighting
requirements.
8. Stay well back from machine when operating.
Keep others away.
WARNING: DO NOT disconnect the lock-up
chain until the Rock Digger has been hitched up
to a tractor, hydraulic hoses connected and the
hydraulic system pressurized.
Failure to heed this warning can result in
unexpected dropping of teeth along with rapid
upending of the machine due to an air pocket
or lack of oil in the cylinders.

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Follow this procedure when selecting and preparing
a tractor for use with the machine:
1. Use only a tractor of sufficient power and
weight to adequately handle the machine. It
is recommended that the tractor have at least
100 PTO horsepower for normal operating
conditions.
2. Locate the drawbar in its centre position to
prevent it from swinging.
3. Use only a drawbar pin with provisions for a
mechanical retainer such as a Klik pin. Always
install the retainer.
4. Always attach a safety chain between the
tractor and the machine to prevent unexpected
separation.
5. Check that adequate hydraulic fluid is in tractor
reservoir and top up if necessary.
6. Check for any oil leaks.
TRACTOR PREPARATION
WARNING:Use extreme care
when working around a high
pressure hydraulic system. Make
sure all connections are tight
and all components are in good
repair. Wear hand and eye
protection when searching for suspected leaks.
Preparation
PRE-OPERATION CHECKLIST
Efficient and safe operation of the Rock
Digger requires that each operator reads and
understands the operating procedures and
all related safety procedures outlined in this
manual. A pre-operational check list is provided
for the operator. It is important for both personal
safety and maintaining the good mechanical
condition of the machine that this checklist be
followed:
Before operating the machine and each time there-
after, the following areas should be checked off:
1. Lubricate the machine per the schedule
outlined in the “Service & Maintenance Section”.
2. Use only a tractor of adequate power (100
hp minimum) and weight to handle the Digger.
3. Ensure that the machine is properly attached
to the tractor using a drawbar pin with
provisions for a mechanical retainer. Make sure
that a retainer such as a Klik pin is installed.
Note:It is important to pin the drawbar in the
central location only.
4. Ensure that a safety chain on the hitch is
installed.
5. Check tires and ensure that they are inflated
to the specified pressure: 36 psi (250 kPa).
6. Check oil level in the tractor hydraulic
reservoir. Top up as required.
7. Inspect all hydraulic lines, hoses, fittings and
couplers for tightness. Tighten if there are leaks.
Use a clean cloth to wipe any accumulated
dirt from the couplers before connecting to the
tractor’s hydraulic system.
Lock-up
Chain
IMPLEMENT PRE-OPERATIONAL WARNING
WARNING: DO NOT disconnect the lock-up
chain until the Rock Digger has been hitched up
to a tractor, hydraulic hoses connected and the
hydraulic system pressurized.
Failure to heed this warning can result in
unexpected dropping of teeth along with rapid
upending of the machine due to an air pocket
or lack of oil in the cylinders.

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The Rock Picker should always be parked on a level,
dry area that is free of debris and foreign objects.
Follow this procedure when attaching:
1. Clear the area of bystanders and remove
foreign objects from the machine and working
area.
2. Make sure there is enough room to back the
tractor up to the hitch pole.
3. Start the tractor and slowly back it up to the
hitch point.
4. Stop the tractor engine, place all controls in
neutral, set park brake and remove ignition key
before dismounting.
5. Use the hitch pole jack to raise or lower the pole
to align with the drawbar.
6. Install a drawbar pin with provisions for a
mechanical retainer such as a Klik pin.
Install the retainer.
7. Install a safety chain between the tractor
drawbar and the hitch pole.
8. Connect the hydraulics. To connect, proceed as
follows:
• Use a clean cloth or paper towel to clean the
couplers on the ends of the hoses. Also clean
the area around the couplers on the tractor.
• Remove the plastic plugs from the couplers and
insert the male ends.
9. Raise the hitch jack and rotate it 90º to place in
its stowed position.
10. When unhooking from the tractor, reverse the
above procedure.
Occasionally air may become trapped in the
hydraulic circuit, making it necessary to “bleed”
the circuit.
To perform this operation cycle the hydraulics
several times or especially on older tractors,
temporarily loosen an easily accessible hose
fitting enough to allow any trapped air to escape
while cycling the hydraulics. Retighten fitting.
Preparation
ATTACHING / UNHOOKING
WARNING: NEVER unhook the Rock Digger
from tractor when rock is being held in raised
position. Machine will upend.
Drawbar Pin &
Safety Chain
Connect
Hydraulics

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1. Operator’s Responsibility:
Every operator should read this manual and
be instructed in safe operating procedures. An
untrained operator is not qualified to operate
this machine and could place themselves or
bystanders in danger.
2. Bleeding the Hydraulics:
Before beginning operation, bleed the
hydraulic system to remove any air.
To do this, cycle the hydraulics several times by
holding the cylinder fully extended for several
seconds. This will cause any trapped air to be
purged from cylinder.
OPERATING
Operation
2) The second method disturbs less soil but
requires working both hydraulic circuits
simultaneously in an attempt to grab the rock
between the rear teeth and the hook arm.
Drive the digger teeth over the rock and lower
the teeth at the edge of the obstacle. Rock the
tractor ahead slightly to set the teeth under the
rock. Next, lower the hook arm to also grasp
the rock and work both hydraulic circuits
until the obstruction can be pulled out of the
ground. Finally raise up the rear frame and
tow rock to the desired dumping site.
WARNING: Stay clear of the machine
and surrounding area when unloading.
Keep others away.
Back up to the dumping site. Lower the rear
arm to approximately 30-45° and release the
hook arm hydraulics to allow the rock to roll
out.
4. Unloading:
3. Methods of Operation:
Two basic methods of operating the Digger
can be utilized:
1) The first method is to lower the rear teeth to
ground level about 20-25 ft. (6-8m) from
the rock to be removed. Place the rear teeth
hydraulics into “float position”. By slowly
driving the tractor ahead the teeth will
automatically penetrate the ground as the rock
is approached.
When contact is made, continue forward
speed which will roll the rock up and out of the
ground.
To remove the rock, activate the hook arm
hydraulics to cradle the rock securely, then
raise the rear arm fully. Finally tow rock to
desired dumping site.

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Transporting
Follow this procedure when preparing to transport:
1. Clear the area of bystanders, especially small
children, before converting into transport
configuration.
2. Retract both hydraulic cylinders fully.
3. Position the lock-up chain into the position
shown and secure with the pin and hair pin
combination.
4. Swing hitch pole jack up and secure with
chained pin.
5. Rotate hitchpole jack out of the way and secure
with chained pin.
6. Clean the SMV, lights and reflectors.
7. Maintain a safe speed. Slow down when
cornering and on rough roads.
8. Slow down and pull off to the side of the road
when meeting other traffic.
9. Use hazard flashers on tractor unless
prohibited by law.
TRANSPORTING
RIDERS
TRANSPORT SAFETY
• Always travel at a safe speed. Use caution
when making corners or meeting traffic.
• Make sure the SMV (Slow Moving Vehicle)
emblem and all the lights and reflectors that are
required by the local highway and transport
authorities are in place, are clean and can be
seen clearly by all overtaking and
oncoming traffic.
• Keep to the right and yield the
right-of-way to allow faster traffic to
pass. Drive on the road shoulder, if
permitted by law.
• Always use hazard warning flashers on tractor
when transporting unless prohibited by law.
• Always use a pin with provisions for a
mechanical retainer and a safety chain when
attaching to a tractor or towing vehicle.
• Ensure the red transport pin on the grille is in
transport position and the swing hitch pole is
fully inward and secured before moving on a
public road.
Lock-up
Chain

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Storage
After the season’s use, completely inspect all
major systems of the machine. Repair or replace
any worn or damaged components to prevent
unnecessary down time at the beginning of next
season.
Since the unit can be used in extremely adverse
conditions during the season, the machine should
be carefully prepared for storage to ensure that all
dirt, mud, debris and moisture has been removed.
Follow this procedure when preparing to store:
1. Wash the entire machine thoroughly using a
water hose or pressure washer to remove all
dirt, mud, debris or residue.
2. Inspect all moving parts to see if anything
has become entangled in them. Remove the
entangled material.
3. Lubricate all grease fittings to remove any
moisture in the bearings.
4. Inspect all hydraulic hoses, fittings, lines,
couplers and valves. Tighten any loose fittings.
Replace any hose that is badly cut, nicked or
abraded or is separating from the crimped end
of the fitting.
5. Touch up all paint nicks and scratches to
prevent rusting.
6. Oil the exposed rams on the hydraulic
cylinders to prevent rusting.
7. Select an area that is dry, level and free of
debris.
8. Follow the procedure given in “Preparation”
when unhooking.
STORAGE
STORAGE SAFETY
• Store unit in an area away from human activity.
• Do not permit children to play around the
stored unit.
REPLACEMENT DECALS AND REFLECTORS
STORAGE SAFETY - DECALS
• Keep safety decals and signs clean and legible
at all times.
• Replace safety decals and signs that are missing
or have become illegible.
• Replaced parts that displayed a safety sign
should also display the current sign.
• Safety decals or signs are available from your
Dealer Parts Department. Safety decals will be
available upon request.
PART NO. DESCRIPTION QTY.
142380 Decal, Danger - Falling Arm 2
142381 Decal, Danger - Falling Hook 2
142382 Decal, Warning - Upending 2
142383 Decal, Caution - 6 Point Safety 1
142009 Decal, Degelman - 3-3/4” x 16-1/4” 4
142557 Reflector Tape - Amber, 2” x 9” 2
142556 Reflector Tape - Red, 2” x 9” 2
142650 Reflector Tape - Fluorescent, 2” x 9” 2

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Troubleshooting
TROUBLESHOOTING
In the following section, we have listed some of the problems, causes and solutions that you may encounter.
If you encounter a problem that is difficult to solve, even after having read through this troubleshooting section,
please call your local dealer or distributor. Before you call, have this manual and the serial number from your
unit ready.
PROBLEM
Hydraulics creep down
during operation.
Arms raise too slowly.
Oil accumulation on
cylinder shaft.
Tractor stalls.
CAUSE
Tractor hydraulic leak.
Damaged hose or loose
fittings.
Hydraulic cylinder leak.
Hydraulic pressure from
tractor too low.
Restriction in hose.
External hydraulic leak.
Hydraulic cylinder leak.
Oil bypassing seals.
Insufficient Tractor
horsepower.
SOLUTION
To verify, raise both arms, disconnect at tractor and observe if
arms creep down. If not, repair tractor hydraulics.
Search for leaks with a piece of paper (not by hand). Repair as
necessary.
Replace seals or damaged components.
Check pressure, should be 1500-2500 psi.
Disconnect & blow out lines with compressed air.
Repair as needed.
Replace seals or damaged components.
Seal manufacturer advises that small amounts of oil getting past
seals is desirable. If problem becomes excessive, replace seals.
100 hp recommended minimum.

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Service & Maintenance
MAINTENANCE SAFETY
• Review the Operator’s Manual and all safety
items before working with, maintaining or
operating the Rock Picker.
• Lower rear arm and hook arm to ground, stop
the tractor engine, place all controls in neutral,
set park brake, remove ignition key before
servicing, adjusting, repairing or maintaining.
• Clear the area of bystanders, especially
children, when carrying out any maintenance
and repairs or making adjustments.
• Place safety stands or large blocks under the
frame before removing tires or working beneath
the machine.
• Be careful when working around or maintaining
a high-pressure hydraulic system. Wear proper
eye and hand protection when searching for
a high-pressure hydraulic leak. Use a piece
of wood or cardboard as a
backstop when searching for
a pin hole leak in a hose or a
fitting.
• Always relieve pressure before disconnecting or
working on hydraulic system.
TIRE SAFETY
1. Failure to follow proper procedures when
mounting a tire on a wheel or rim can produce
a blow out which may result in serious injury or
death.
2. Do not attempt to mount a tire unless you have
the proper equipment and experience to do the
job.
3. Have a qualified tire dealer or repair
serviceman perform required tire maintenance.
HYDRAULIC SAFETY
1. Always place all tractor hydraulic controls in
neutral before dismounting.
2. Make sure that all components in the hydraulic
system are kept in good condition and are
clean.
3. Replace any worn, cut, abraded, flattened or
crimped hoses and metal lines.
4. Do not attempt any makeshift repairs to the
hydraulic lines, fittings or hoses by using tape,
clamps or cements. The hydraulic system
operates under extremely high-pressure.
Such repairs will fail suddenly and create a
hazardous and unsafe condition.
5. Wear proper hand and eye
protection when searching
for a high-pressure hydraulic
leak. Use a piece of wood
or cardboard as a backstop
instead of hands to isolate
and identify a leak.
6. If injured by a concentrated high-pressure
stream of hydraulic fluid, seek medical attention
immediately. Serious infection or toxic reaction
can develop from hydraulic fluid piercing the
skin surface.
7. Before applying pressure to the system, make
sure all components are tight and that lines,
hoses and couplings are not damaged.
• Think SAFETY! Work SAFELY

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Service & Maintenance
TORQUE SPECIFICATIONS
CHECKING BOLT TORQUE
The tables shown below give correct torque values
for various bolts and capscrews. Tighten all bolts to
the torques specified in chart unless otherwise noted.
Check tightness of bolts periodically, using bolt torque
chart as a guide. Replace hardware with the same
strength (Grade/Class) bolt.
IMPERIAL TORQUE SPECIFICATIONS
(based on “Zinc Plated” values)
SAE-5 SAE-8
Size Grade 5 Grade 8
lb.ft (N.m) lb.ft (N.m)
1/4” 7 (10) 10 (14)
5/16” 15 (20) 20 (28)
3/8” 25 (35) 35 (50)
7/16” 40 (55) 60 (80)
1/2” 65 (90) 90 (120)
9/16” 90 (125) 130 (175)
5/8” 130 (175) 180 (245)
3/4” 230 (310) 320 (435)
7/8” 365 (495) 515 (700)
1” 550 (745) 770 (1050)
1-1/8” 675 (915) 1095 (1485)
1-1/4” 950 (1290) 1545 (2095)
1-3/8” 1250 (1695) 2025 (2745)
1-1/2” 1650 (2245) 2690 (3645)
METRIC TORQUE SPECIFICATIONS
(based on “Zinc Plated” values)
8.8 10.9
Size Class 8.8 Class 10.9
lb.ft (N.m) lb.ft (N.m)
M6 7 (10) 10 (14)
M8 16 (22) 23 (31)
M10 30 (42) 45 (60)
M12 55 (75) 80 (108)
M14 90 (120) 125 (170)
M16 135 (185) 195 (265)
M18 190 (255) 270 (365)
M20 265 (360) 380 (515)
M22 365 (495) 520 (705)
M24 460 (625) 660 (895)
M27 675 (915) 970 (1315)
M30 915 (1240) 1310 (1780)
M33 1250 (1695) 1785 (2420)
M36 1600 (2175) 2290 (3110)
Wheel Tightening Procedure
1. Install and hand tighten nuts/bolts.
2. Tighten to approx 20% Torque value using the
10 Bolt Star or CrissCross pattern shown above.
3. Tighten to Full Torque value using the Star or
CrissCross pattern.
4. If applicable, install Rear Locknuts using Wheel
Torque Values.
Wheel Nut/Bolt Torque
Size lb.ft (N.m)
9/16 120-130 (165-175)
5/8 185-190 (250-260)
3/4 280-300 (380-405)
BOLT PATTERNS
2
1
6
53
4
6 BOLT PATTERN
2
1
34
57
8
8 BOLT PATTERN
1
2
34
5
5 BOLT PATTERN
1
2
3
46
5
79
10 8
10 BOLT PATTERN
WHEEL NUT & WHEEL BOLT TORQUE
Tightening Flare Type Tube Fittings
1. Check flare and flare seat for defects that might
cause leakage.
2. Align tube with fitting before tightening.
3. Lubricate connection and hand tighten swivel
nut until snug.
4. To prevent twisting the tube(s), use two
wrenches. Place one wrench on the connector
body and with the second tighten the swivel nut
to the torque shown.
Hydraulic Fitting Torque*
Size lb.ft (N.m)
1/2 34 (46)
3/4 75 (100)
7/8 90 (122)
* The torque values shown are based on
lubricated connections as in reassembly.
HYDRAULIC FITTING TORQUE
HARDWARE/HOSE SPECIFICATIONS
Unless otherwise stated:
• Hardware - Hex, Plated GR5 UNC or P8.8 (metric)
• Hydraulic Hoses - 3/8 & 1/2, ends come with
3/4 JIC female swivel.

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Service & Maintenance
SERVICE INTERVALS
25 Hrs.
Grease Hook Arm Bearings - 2 locations
(nipple located on top of cast bearing housing)
Annually
check hardware/bolt tightness - general
grease wheel hub nipple - 2 locations
check/repack wheel bearings - 2 locations
(use a good grade of bearing grease)
1. Grease: Use an SAE multi-purpose
grease with extreme pressure (EP)
performance. Also acceptable is an
SAE multi-purpose lithium base grease.
2. Storing Lubricants: Your machine can operate at
top efficiency only if clean lubricants are used.
Use clean containers to handle all lubricants.
Store them in an area protected from dust,
moisture and other contaminants.
FLUIDS AND LUBRICANTS
1. Use only a hand-held grease gun for all
greasing.
2. Wipe grease fitting with a clean cloth before
greasing, to avoid injecting dirt.
3. Replace and repair broken fittings immediately.
4. If fittings will not take grease, remove and clean
thoroughly. Also clean lubricant passageway.
Replace fitting if necessary.
5. Inject grease until you see grease being
expelled from the bearing or bushing areas.
GREASING
Tire pressure: 36 PSI (250 kPa)
Wheel nut / bolt torque: 120-130 ft.lbs (165-175 N.m)
TIRES
25 Hrs.

-16-
143345 - RockDigger 320 (17-August-2017)
Hard
Surface Tips
Shim
Locations
Service & Maintenance
To set the correct tension on the lock-up
chain, proceed as follows:
1. Fully retract the rear arm hydraulic cylinder.
WARNING: Stay clear of the machine and
surrounding area when unloading. Keep others
away.
2. Loosen jam nut/eye bolt combination.
3. Attach chain to hole in rear arm.
4. Start tightening the chain by turning the lower
jam nut on the chain until there is a slight
amount of slack.
5. Secure this setting by tightening the top jam nut.
LOCK-UP CHAIN ADJUSTMENTS
Adjust
Tension
Retract
Cylinder
When execssive wear is apparent between the
rockshaft and cast bearings, remove the spacer
shims on both sets of bearings.
Loosen bolts and pull out slotted shims.
SPACER SHIM REMOVAL - ROCKSHAFT
Hard surfacing should be done on a regular basis
to prevent excess wear on teeth.
Build up worn portions of teeth to restore them to
their original contour using a low hydrogen 7018
build up rod.
Resurface teeth (a double pass is recommended)
using hard surface welding rods. A hardness of RC
45-50 is desirable.
NOTE: Special hard surfacing rod kits are available
through Degelman Industries Ltd. or your local
Degelman dealer.
TOOTH REPAIR and HARD SURFACING