Blue Diamond PN 104605 Manual

Swing Arm Stump Grinder
Operation & Maintenance Manual
Date Purchased: ____________________________________
Purchased From: ___________________________________
Model Number: _____________________________________
Serial Number: _____________________________________
REMEMBER: Register your product! No claims for warranty shall be
considered unless your product registration is completed online within
30 days of purchase.
To Register: www.bluediamondattachments.com/warranty-registration/

2
The list below shows all revisions
of the Stump Grinder Operations
and Maintenance Manual
Summary of
Changes First
Revision
Publication Date:
September 2018
Document Revision
First Publication
Corporate Headquarters
Blue Diamond Attachments, LLC.
4512 Anderson Rd.
Knoxville TN, 37918
toll free 800-376-7027
local 865-246-2006
fax [phone]
www.bluediamondattachments.com
Forward
Congratulations on the purchase of your Blue Diamond Stump Grinder!
Blue Diamond Stump Grinders are designed by people with years of experience in the landscape business. You can be
sure that the quality and innovation of Blue Diamond is our first priority. Getting to know your new stump
grinder should be the first step in learning its features and limitations. This manual is designed to assist you in the
operation and maintenance of your grinder.
Document History

3
Contents
Forward
Blue Diamond Safety
About This Manual
Terminology & Hazard Notices
Safety Notices
Modifications of Equipment
About the grinder
Grinders
Attaching the grinder
Removing the grinder
Operation
Equipment Inspection
Usage Guidelines
How to Grind Stumps
Maintenance
Detailed Parts Diagrams
Parts Identification List
Specifications
Manufacturer’s Warranty
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4
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5
5
6
6
7
7
7
8
9
10
11
12
13

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Blue Diamond Safety
ABOUT THIS MANUAL
Read this manual and follow safety instructions before operating the grinder. Learn to operate the stump grinder and its
controls properly. Never let anyone operate without instruction. This manual contains information about the usage
and maintenance required for the equipment. This document must be available for review by the operator before
using the attachment to ensure proper safety, maintenance, and usage.
TERMINOLOGY & HAZARD NOTICES USED IN THIS MANUAL
CAUTION
WARNING
DANGER
Cautions are used to indicate a potentially hazardous situation which, if not avoided, may result
in damage to the equipment or other property.
Warnings are used to indicate a potentially hazardous situation which, if not avoided, could
result in serious injury or death.
Danger is used to indicate a potentially hazardous situation which, if not avoided, will result in
serious injury or death.
Prime Mover The Blue Diamond Stump Grinder can be attached to many different pieces of equipment;
therefore the term “prime mover” will be used. A prime mover is any loader, tractor or
equipment providing power to the attachment.
SAFETY
Safety Notices
Before operating or conducting maintenance on this equipment, it is important to wear proper protection.
Recommended safety equipment when operating and maintaining this equipment include close fitting
clothing, earplugs, eye protection, and a hard hat. Additional safety equipment may be required depending on
the operating environment and worksite conditions.
Only qualified and trained personnel should operate, maintain, and service this attachment. It is recommended that this
equipment be inspected regularly for leaks, cracks, or other conditions that may impair proper usage of the equipment.
Verify that all repairs have been completed and inspected prior to using the attachment under load.
It is the responsibility of the user to follow all local, state, and federal safety regulations. Improper use of this
equipment may result in personal injury, property damage, and/or damage to the equipment.
AVOID
WARNING
high pressure fluids. Escaping fluid under pressure can penetrate the skin and cause serious
injury. Relive pressure BEFORE disconnecting hydraulic lines. Tighten all connections before
applying pressure. IF AN ACCIDENT OCCURS, SEE A DOCTOR IMMEDIATELY. Any
fluids injects into the skin must be surgically removed within a few hours or gangrene may
result.
Do not operate the grinder if any of the safety guards are not in place.
Modifications to Equipment
Any modifications made to this equipment may void any warranty and relieve the manufacturer of liability of
any resulting injury or damage

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Grinders
The Blue Diamond Stump Grinder attachment is a necessity for
tree companies, landscapers, agricultural producers and
rental companies looking to increase their productivity
and efficiency when stump grinding.
The grinder is designed by people with years of experience with
attachments for machinery. You can be sure that the quality of
the Blue Diamond Stump Grinder is our first priority.
The grinder has been designed to deliver the productivity of a
dedicated machine,but it costs four to five times less. This
grinder is engineered for skid steers with high flow
hydraulics(30-45 GPM). A hydraulic grinder motor for
maximum productivity, heavy weight for increased stability,
and super high efficiency cutting performance are just a few
features that combine to bring you the world’s finest stump
grinder!!
About the grinder
The stump grinder attachment is intended for use in stump grinding. Use if this equipment in any other manner
is considered to be contrary to the intended use of the attachment.

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Attaching the grinder to the Prime Mover
NOTE
Before attempting to attach the grinder to the
prime mover, verify that all hydraulic
couplers are compatible.
CAUTION
Hydraulics should operate in an even and
smooth manner. Hydraulic movement that is
not even and smooth may indicate that air is
in the hydraulic lines.
WARNING
Improper attachment to the prime mover may
cause personal injury.
CAUTION
All hydraulic connections must be clean and
free of debris before making any connection.
WARNING
Improper disconnection may result in
personal injury or damage to the attachment
and prime mover.
CAUTION
All hydraulic connections must be clean and
free of debris before disconnection
NOTE
Hydraulic connections must be disconnected
before disengaging latches to prevent damage
to the prime mover or the attachment.
1. Place the grinder attachment on a level surface.
2. Position and align the prime mover to the rear of the
attachment, within proximity of the front of prime mover.
3. Insert and connect the prime mover into the attachment.
4. Connect the hydraulic lines from the attachment to the prime
mover.
5. Close latches (or other locking mechanism) to secure the
attachment to the prime mover.
6. Using the prime mover withtheMultifunction controllerand
harness, raise the attachment and move the attachment to
ensure hydraulic lines are clear of air and operate properly.
7. Lower the attachment to ground level.
8. Route hoses away from pinch areas –install cable ties if
necessary to assure extended hose life.
9. Inspect that the attachment is mounted properly and securely.
If the attachment does not meet this requirement, follow the
instructions to remove the grinder and re-attach using the
instructions above.
1. Using the prime mover, lower the attachment to the
ground.
2. Relieve the pressure in the hydraulic system by
following these instructions:
a. Turn the ignition to off.
b. Turn the ignition back to the on position without
starting the machine.
c. Move the auxiliary hydraulic function lever back
and forth to relieve the pressure in the hydraulic lines
(this will greatly assist you when hooking the unit
back up so that the hydraulic couplers connect easily).
3. Disconnect the hydraulic connection between the
attachment and the prime mover. To prevent
contamination, remove any dirt and debris from the
couplers.
4. Disengage the prime mover latches (or other locking
mechanism) from the attachment.
5. Remove the prime mover from the attachment.
Removing the grinder from the Prime Mover

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Operation
NOTE
Replace any damaged hardware, hoses and
fittings before using the equipment.
WARNING
Do not use hands to check for hydraulic
leaks. Keep body parts away from the
leaking hydraulic lines and couplers that are
under pressure.
DANGER
Keep all body parts away from the grinder
when in use. The pivoting blade is
dangerous and hazardous and could
potentially cause serious bodily injury or
death.
CAUTION
Always be aware of what is overhead when
operating the grinder
Inspection Checklist
Are all safety notices and warning
stickers in proper locations and
visible?
Are there any visible hydraulic
leaks?
Are any cracks visible in structure of
the grinder?
Is the cutting wheel bent?
Are bolts holding teeth secure and
tight?
Has the prime mover been properly
inspected for hydraulic leaks and
proper tire inflation?
Has the prime mover been properly
maintained?
Equipment Inspection
It is recommended to inspect the equipment for damage and wear
before use. Use the following list as a guideline during equipment
inspection.
Check all hardware connections to the prime mover for
damage or fatigue such as cracks or other structural flaws
Check that all latches or locks are closed
Check that all hydraulic fittings are tight and free of leaks
Check that all hydraulic lines are free of leaks, holes or
cracks
Check that the tires on the prime mover are in good
condition and have proper load ratings
Usage Guidelines
Before each use of the stump grinder, do the following:
Perform the equipment inspection by performing a walk
around
Perform daily inspection as indicated on the Inspection
Checklist
Verify that the proper attachment is being used for the
task
As with any power attachment, safety is critical. An
enclosed cab prime mover with the operation wearing
safety protection is required

Never operate the grinder with persons within 100 feet of
range

Disengage grinder and shut off the engine before
leaving the cabin of the prime mover

Keep all body parts away from the grinder when in use
Use caution on slopes and uneven terrain
Never carry passengers
Never leave the machine running unattended
Never leave grinder off the ground when out of the
operator’s seat
Never allow children or untrained personnel operate the
grinder

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Operation Continued
How to Grind Stumps
Align the cutter wheel with the left side of the stump (viewed from the machine control area) and position the machine so
that it will cut about 4-6 inches off the top of the stump and 8-12 inches from the left side of the stump. See FIGURE A.
The rate of cut will depend on the type of tree, condition of the wood, and the condition of the cutters. Too light a feed
will produce sawdust. The ideal feeding rate produces heavy wood chips, some of which may be about 1/16” thick by
approximately 6-8 inches long, as well as chunks of wood. After completing the first cut through the stump, move the
machine to the right (again as viewed from the control area) so the wheel can cut another 8-12 inches. Proceed with
anther cut. Additional passes, when the tree stump is very large, are made in the same manner as described above.
Repeat the procedure until the stump is cut to ground level.
Before cutting below the ground level, make certain that all rock or stone is removed from the immediate area of the
cutting wheel. When you are cutting below the ground level, the feed rate should be reduced and the operator should be
alert to the possibility of cutting hidden rock. Extra care used in this part of the operation can avoid costly damage to the
cutting wheel and teeth.
The wheel is designed so that it can “saw” or cut its way into solid wood by dropping straight down on it. This operation
works well for cutting off large roots.
NOTE:DO NOT operate grinder with safety guards removed

9
NOTE
Disconnect the hydraulic connection between
the attachment and the prime mover before
performing any type of maintenance on the
grinder.
GREASE POINTS
Cutting Wheel
Be certain to check carbide cutting teeth for wear. Replace teeth
as necessary.
Hoses
Check hoses occasionally for abrasion damage. This may save you
from downtime. If in doubt, replace with genuine Blue Diamond
parts.
Pivot Pins
Pivot pins may be lubed with moly-type grease, same as what is
used on your machine. Please check the cotter pins that
retain all pivot/anchor pins after each use. If missing, replace!
Severe damage could be caused by losing a pin.
Grease Points
There are 6 grease points on the grinder. Each grease point
should have new grease applied daily when being used.
Approximately every 8 hrs. Please refer to the pictures for the
6 grease points.
Storage
Lubrication of pivot pins is recommended if unit is stored outside.
Be certain hydraulic quick couplers are cleaned and joined together
to keep dirt out. A light coating of oil film or diesel fluid is
recommended to prevent corrosion. Touch-up paint should be used
on all scratches to prevent further rust.
Maintenance

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Detailed Parts Diagram
Swing arm stump grinder –Parts Diagram

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Parts Identification List
Item #
Part#
Description
23008
Bracket, Lift
34001
WHEEL, STANDARD,
35052
HARNESS, 6 FUNCTION
54227
3/8" PROOF COIL SELF COLOR,
69001A
1/4" Polycarbonate 75SS Shield
FK0008
FITTINGS KIT, PRO75 SS
FK-5014
FASTENER KIT FOR PRO75SS
FS15HDA31302713A0D316ADBM
HYDRAULIC GRINDER MOTOR –130 - 2933
FS15HDA31502713A0D316ADBM
HYDRAULIC GRINDER MOTOR –150 - 3339
FS15HDA31702713A0D316ADBM
HYDRAULIC GRINDER MOTOR –170 - 3945
GB3236-024
Garlock Bushing, 2" X 1.5""
GB3236-032
Garlock Bushing, 2" x 2""
HK0008
HOSE KIT, PRO75 SS
MFJC
CONTROLLER, MULTI-FUNCTION
P25010
OMNI GEAR MDH40 W/CASTLE NUT
P25022
CHECK VALVE, CASE DRAIN
P25039
WASHER, PLASTIC
P25047
O-RING FOR STUMP GRINDER
P25058
WHEEL,8 TOOTH HIGH PERFORMACE
P25059
WHEEL, REVOLUTION HD-26"
P25060
COUPLER,1/4" FEMALE CASE DRAIN
P25061
COUPLER,3/8" FEMALE CASE DRAIN
P25062
COUPLER, 3/8" MALE CASE DRAIN
P25200
MANIFOLD, VALVE ASSEMBLY FOR
P25507
CYLINDER, SWING, 2.5 X 6,
P25508
CYLINDER, EXTEND, 2.5 X 12,
P25510
CYLINDER, LIFT, 4.5 X 8
P25511
UHMW PLASTIC SLIDE
P25512
PIN, LIFT, BASE END
P25513
PIN, LIFT, ROD END
P25516
WASHER, MACHINED
P25517
SNAP RING, EXTERNAL
P25545
DECAL KIT, WARNING
P25546
HARNESS, CAT 14 PIN
P25547
HARNESS, CAT 8 PIN
P25548
HARNESS, UNIVERSAL 14 PIN
P25549
HARNESS, UNVERSAL 8 PIN
P25550
PIN, TELESCOPIC BASE
P25551
PIN, CENTER ROTATION
P25553
PIN, CENTER TILT
P50010F
FLAT FACE COUPLER, FEMALE
P50010M
FLAT FACE COUPLER, MALE
65
65
65
17
16
18
20
21

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P80010F
FLAT FACE COUPLER 5/8" FEMALE
P80010M
FLAT FACE COUPLER 5/8" MALE
P90010F
FLAT FACE COUPLER 3/4" FEMALE
P90010M
FLAT FACE COUPLER 3/4" MALE
STEEL KIT 75SS
STEEL KIT FOR 75SS
T100HB
Hardened Bolt
T100HW
Hardened Washer
T100L
LEFT SIDE TOOTH
T100R
RIGHT SIDE TOOTH
T100S
STRAIGHT TOOTH
T100TMB
THREADED MOUNT BLOCK
Specifications
Model Number
PN 104605 PN 104610 PN 104615
Requirements:
SkidSteer Lifting
Capacity(lbs.)
2,400
2,400
2,400
Hydraulic HP
55-77
70-91
68-105
Hydraulic Flow
29-33GPM
33-39GPM
39-45GPM
Hydraulic Pressure
3,000-4061 PSI
3,000-4061 PSI
3,000-4061 PSI
Case Drain
Yes
Yes
Yes
Product Data:
Cutting Wheel Diameter
26”
26”
26”
Cutting Wheel
Thickness
1.25”
1.25”
1.25”
Number of Teeth
32
32
32
Weight(lbs.)
1,640
1,640
1,640
Available Upgrades:
6 Tooth Low Flow
Wheel
NO
NO
NO
8 Tooth High Flow
Performance Wheel
Yes
Yes
Yes
5 Hose Control Upgrade
Yes
Yes
Yes
Universal Controller with
Harness
Yes
Yes
Yes

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Six-Month Limited Warranty
Warranty Claim
Exclusions of Warranty
Remember: Register your product! No
claims for warranty shall be considered
unless your product registration has
been submitted online within 30 days of
purchase.
To Register Product Go To:
bluediamondattachments.com/warranty-registration/
Blue Diamond Attachment, warrants new Blue Diamond Stump
GRINDERS at the time of delivery to the original purchaser, to be free
from defects in material and workmanship when properly set up and
operated in accordance with the recommendations set forth by Blue
Diamond. Blue Diamond's liability for any defect with respect to
accepted goods shall be limited to repairing the goods at a Blue
Diamond designated location or at an authorized dealer location, or
replacing them as Blue Diamond shall elect. The above shall
be in accordance with Blue Diamond warranty adjustment
policies. Blue Diamond's obligation shall terminate
six (6) months after the delivery of the goods to original purchaser.
This warranty shall not apply to any machine or attachment which shall
have been repaired or altered outside the Blue Diamond factory or
authorized Blue Diamond dealership or in any way so as in Blue
Diamond's judgment, to affect its stability or reliability, nor which has
been subject to misuse, negligence or accident beyond the Company
recommended machine rated capacity.
To submit a warranty claim, a return authorization from Blue Diamond
must be obtained. The failed part may then be returned. Tampering with
the failed part may void the warranty. This warranty may not include
freight or delivery charges incurred when returning machinery for
servicing. Dealer mileage, service calls, and pickup/delivery charges are
the customers’ responsibility.
Except as otherwise expressly stated herein, Blue Diamond Attachments
makes no representation or warranty of any kind, expressed or implied,
AND MAKES NO WARRANTY OF MERCHANTABILITY IN
RESPECT TO ITS MACHINERY AND/OR ATTACHMENTS ARE
FIT FOR ANY PARTICULAR PURPOSE. Blue Diamond shall not be
liable for incidental or consequential damages for any breach of
warranty, including but not limited to inconvenience, rental of
replacement equipment, loss of profits or other commercial loss. Upon
purchase, the buyer assumes all liability for all personal injury and
property resulting from the handling, possession, or use of the goods by
the buyer.
No agent, employee, or representative of Blue Diamond has any
authority to bind Blue Diamond to any affirmation, representation or
warranty concerning its machinery and/or attachments except as
specifically set forth herein.
This warranty does not cover abuse, modifications by others, or
leaking hoses due to improper routing, abrasion, or pinching.
This warranty policy supersedes any previous documents.
No claims for warranty shall be considered unless warranty registration
is submitted to Blue Diamond within 30 days of purchase.
Manufacturer’s Warranty