control panel must be in the center (Neutral)
position between DRIVE & DRILL, and the
MASTER DISCONNECT switch must be ON. Be
certain both red EMERGENCY STOP switches
are pulled out. The engine throttle, choke and
start key are all located at the rear of the
machine on the right side of the engine.
MOVING: The self propelled function only works
with the function switch in the DRIVE position.
Gently raise and lower the lever on the drive
valve mounted in the upper rear corner of the
machine. To steer the unit, lift the rear tires of
the ground and pivot to the proper location.
The machine may also be move manually by
lifting the rear tires off the ground and pushing
or pulling. Be certain the rear legs and front
mast are raised fully for maximum ground
clearance.
DOWN switch to slowly start the hole. Once
contact is made, switch to AUTO DRILL mode,
drilling will continue until the cylinder stroke is to
its maximum length or until the AUTO DRILL
switch is shut off.
The DRIIL DOWN, DRILL UP, and TURBO switches
will NOT operate when the AUTO DRILL mode is
on.
TWO SPEED DRILL MOTOR: Set to high speed for
drills up to 10” in diameter (Shift Clockwise) and
low speed for drills greater then 10” (Shift
Counter Clockwise).
IMPORTANT! A red emergency stop button is at
the rear and side controls panels. This will stop
the engine and shut down all hydraulic and
electrical systems. These buttons must be in the
out position to start the engine.
DRILLING: The labels at the front controls
summarize the typical drilling operation. Please
read them and review the following additional
information.
After positioning the drill, put the function
switch in the upper DRILL position. This activates
the controls on the front dash panel. Be certain
the circuit breakers at the rear electrical outlet
panel are on as AC power is required by the
vacuum pump.
The DRILL DOWN, DRILL UP, and TURBO switches
are intermittent and must be held in to
operate. Holding UP or DOWN and TURBO will
raise or lower the drill more rapidly for initial
positioning or pulling bit out of hole. To adjust
the speed of cylinder stroke, hold up or down
and turn the small black knob at the upper
right of the manifold control. This is also the
maximum speed the drill can move while in
AUTO DRILL mode and should be set low. With
the drill set to the proper RPM, gently jog
Table of Contents
Safety P r ecautions
1
Safety Alerts
1
Proposition 65
1
Spark Arrester Requirements
1
Repertory Hazards
1
General Safety
2
Battery & Electrical Safety
2
Drill Safety
3
Fuel Safety
3
Engine Safety
3
Hydraulic Safety
4
Belt Safety
4
Transportation Safety
4
Lifting Safety
4
Introduction to The UDM
5
Components
5
Controls
6-7
Dimensions & Specifications
8
Operating The UDM
9
Light Tower
9
Lift Points
9
Fuel System
9
Battery
9
Engine
10
Drive Lever
10
Water System
11
Vacuum System
11-12
Drill Mode
12
Diamond Core Bits
13
Stuck Cores
15
Stuck Bits
16
Maintaining UDM
17
Maintenance Overview
17
Part Lubrication
17
Tires
17
Battery
18
Electrical System
18
Hydraulic System
19
Belt System
19
Engine
20
Storage
20
References
21
Appendix A Serial Tags
21
Appendix B Maintenance Chart
21
Appendix C Belt Tensioning
22
Appendix D Additional Resources
22
Appendix E Troubleshooting
23
Parts Manual
24
UDM Overview
24
Drive Train Assembly
25
Drive Axle Assembly
Alternator Assembly
Water & Vacuum Systems
Vacuum Pump Assembly
Electrical Outlet Box
Dash Panel Assembly
Rear Stabilizer Assembly
Vacuum Base Assembly
Drill Mast Assembly
Hydraulic System
Pillow Block Assembly
Decal Kit
Wiring Diagram
Maintenance Records
Warranty Information
27
28
29
31
32
34
36
37
38
40
43
44
45
46
47
Safety Precautions
1
Operate the Ultimate Drilling Machine (UDM) and
all of its components according to this manual.
Failure to comply with and understand the following
safety, operations, and maintenance instructions
can result in serious injuries and/or death. All
operators must be properly trained or supervised by
experienced personnel prior to using the machine
and should understand the risks and hazards
involved. Improper or unintended machine usage is
discouraged and Diamond Products cannot be
held liable for damages.
Machine modifications should be made by
Diamond Products to ensure safety and design. Any
modifications made by the owner(s) are not the
responsibility of Diamond Products and void all
warranties if a problem arises as a result of the
modification.
Refer to the UDM Parts List for additional information
and part diagrams. Refer to the engine manual
and manufacturer as the primary source for all
safety, operations, and maintenance instructions
regarding the engine. Prior to operating, record the
machine’s serial number, and the engine’s model
and serial numbers in Appendix A.
Notice: The information in this manual may be
updated at any time!
Safety Alerts
Serious injuries and/or death will occur if these
instructions are not followed.
Serious injuries and/or death could occur if these
instructions are not followed.
Mild and/or moderate injuries could occur if these
instructions are not followed.
Proposition 65
Engine exhaust and some of its
constituents are known to the
State of California to cause
cancer, birth defects, and/or
other reproductive harm.
Spark Arrester Requirement
In the State of California
4442 or 4443 to use or operate the engine on any
forest-covered, brush-covered, or grass-covered
land unless the engine is equipped with a spark
arrester, as defined in Section 4442, maintained in
effective, working order or the engine is
constructed, equipped, and maintained for the
prevention of fire pursuant to Section 4443.
it is a violation of Section
Respiratory Hazards
Concrete drilling produces dust and fumes known
to cause illness, death, cancer, respiratory disease,
birth defects, and/or other reproductive harm.
Safety protection techniques include, but are not
limited to:
• Wearing gloves.
• Wearing safety goggles or a face shield.
• Using approved respirators.
• Washing work clothes daily.
• Using water when wet cutting to minimize
dust.
•Washing the hands and face prior to
eating/drinking.
For additional safety and self-protection
information, contact your employer, the
Occupational Safety and Health Administration
(OSHA), and/or The National Institute for
Occupational Safety and Health (NIOSH).
General Safety
2
•Read and understand all safety, operations,
and maintenance instructions provided in this
manual prior to operating or servicing the
machine.
•Keep the machine clean and free of slurry,
concrete dust, and debris.
•Inspect water hoses prior to operating the
machine. Clean, repair, or replace damaged
components.
•Repair the machine immediately if a problem
arises.
• Replace machine decals if unreadable.
• Dispose of all hazardous waste materials
according to city, state, and federal
regulations.
•Always have a phone nearby, and locate the
nearest fire extinguisher and first aid kit prior to
operating the machine.
•Persons under the statutory age limit should not
operate the machine.
•Operate the machine wearing flame resistant
clothing.
•Always let the machine cool after operating to
prevent serious burns.
•Replace all guards and access panels prior to
operating the machine.
•DO NOT operate the machine around
combustible materials or fumes to prevent
fires/explosions.
•Fit blocks/jacks under the frame edges at the
front and back of the frame for support when
working under the machine.
•All non-routine maintenance tasks should be
performed by an authorized service center.
DO NOT:
•Drop equipment, supplies, tools, etc., when
handling to prevent injuries.
•Lift and carry equipment, supplies, tools, etc.,
that are too heavy.
•Operate the machine without using the
appropriate safety equipment required for the
work task.
•Operate or service the machine with clothing,
hair, or accessories that can snag in the
machinery.
•Operate the machine using attachments not
associated with or recommended for the
machine.
•Operate the machine with anyone near the
work area.
•Operate the machine until unnecessary
materials have been removed from the work
area.
•Operate the machine with loose nuts, screws,
and bolts.
•Operate the machine when ill or fatigued.
Battery and Electrical Safety
•Ignitable explosive gases are
emitted from the battery. DO NOT
expose the battery to sparks or
open flames.
•Keep the area around the battery well-
ventilated.
• Keep the battery level when handling it.
• Use protective eyewear or a face shield and
avoid contact with the skin when
handling/servicing the battery.
•Use a proper battery tester when testing the
battery strength.
•Always connect the battery cables to the
proper terminal to ensure safety.
•Regularly inspect the battery, cables, clamps,
and terminals for damages. Clean, replace,
tighten, and grease components as necessary.
•Always keep the battery cable clamps away
from the battery terminals when the battery is
disconnected to avoid accidental connections.
•Immediately rinse your clothing, skin, or eyes
with water if exposed to battery acid. Seek
medical attention immediately!
•Turn off the master battery disconnect when
servicing the machine.
•Disconnect the battery prior to servicing the
machine unless stated otherwise.
•Remove the battery when storing the machine
for longer periods.
•Disconnect external equipment connected
through the electrical outlets prior to servicing
the machine.
•Do not plug external equipment into the
electrical outlets that requires more power than
the outlets are rated for.
•Always use the correct size fuses (amps) to
prevent fires.
•Disconnect the battery prior to servicing the
electrical system unless stated otherwise.
•DO NOT use the electrical outlets for equipment
that requires more power than the outlets are
rated for.
Drill Safety
Inspect all core bits prior to usage and discard
damaged bits. Remove debris from bits and
clean as necessary.
Keep all body parts away from rotating core
bits.
Always use an appropriate size bit for the drilling
task. The bit must fit tightly on the spindle shaft.
Wear gloves and be alert to the surrounding
environment when handling core bits.
Always use the correct bit type for the material
being drilled.
Always start the engine with the function switch
at Start/Drive.
DO NOT exceed the core bit’s maximum
recommended speed when drilling.
DO NOT use damaged core bits when drilling to
avoid harming yourself, others, or the machine.
DO NOT activate the spindle shaft when
installing a core bit by hand to avoid
entanglement.
Failure to properly secure the core bit to the
spindle shaft may cause the bit to loosen or fall
off the machine.
Raise the core bit/pillow block assembly to a
sufficient height when maneuvering the
machine to provide proper clearance between
the bit/spindle shaft and the ground.
Remove all body parts from under the core bit
when releasing the bit from the spindle shaft.
DO NOT stand on the machine to act as an
anchor. Use the vacuum pump to anchor the
machine.
Always make sure the mast is firmly touching the
ground prior to drilling.
The work area should not contain buried or
embedded electrical, gas, or water lines.
Turn off all electricity, gas, and water lines
around the work area prior to drilling.
Use extreme caution when drilling through
floors. Another trained worker must clear the
surrounding area on the lower floor prior to
drilling in case the core falls to the lower floor.
DO NOT allow any person, animal, or object in
and around the work area when drilling.
Excessive drilling speeds at first
contact with the concrete surface
can cause bit breakage, resulting
in serious injuries and/or death.
Use extreme caution when operating the
machine on slopes, as it is more susceptible to
sideways tipping/rolling over, especially with a
full water tank.
When driving the machine forward or
backward, be alert to the surrounding
environment.
When parking the machine on a slope, lower
the rear legs and front mast or chock the tires to
prevent rolling.
Fuel Safety
Store all fuel in appropriate safety containers. DO NOT operate the machine with a fuel leak. DO NOT fuel the machine with the engine
running.
Let the engine cool prior to adding fuel. Refer to the engine manual for recommended
fuels.
DO NOT smoke or expose fuel to
open flames when filling the fuel
tank or working with fuel.
Clean up spilled fuel prior to starting the engine. Move the machine away from the fueling area
prior to starting the engine.
Drain the fuel tank and fuel lines for longer
storage periods. Refer to the engine manual for
additional information.
Engine Safety
Refer to the engine manual as the primary
source for engine safety.
Always know how to turn off the engine for
emergency purposes.
Fill the fuel tank and check the oil level prior to
starting the engine.
DO NOT leave the engine running unattended. Keep all body parts away from
rotating machine parts with the
engine running.
DO NOT start the engine without the air filter(s)
installed.
DO NOT allow dust to enter the air intake tube
when cleaning/replacing air filter(s).
Immediately replace damaged machine
components that may allow dust to enter the
engine.
Always operate the machine in
well-ventilated areas.
Concentrated engine exhaust can
cause loss of consciousness and/or
death.
Wipe down the engine’s exterior and oil cooler
daily/regularly to prevent high operating
temperatures. DO NOT spray the engine with
water to prevent engine damage.
DO NOT touch the engine/muffler assembly with
the engine running, and always let the parts
cool down prior to touching them or servicing
the machine.
Handle hot oil carefully when changing the oil.
Hydraulic Safety
4
•Turn off the engine prior to servicing the
hydraulic system.
•Turn off the engine prior to disconnecting
hydraulic hoses.
•Pay attention to the hydraulic oil thermometer.
The maximum recommended oil temperature is
180°F.
•Remove the core bit to reduce residual pressure
in the cylinder circuit prior to servicing the
machine.
•DO NOT use external hydraulic equipment that
requires a higher flow rate than what the
machine is rated for.
•Always use a piece of cardboard or
paper to check for hydraulic fluid
leaks. Keep all body parts away
from leaks and/or areas that may
eject hydraulic fluid. Pressurized hydraulic fluid
can penetrate the skin, causing serious injuries.
Seek medical attention immediately!
•Refer to the Department of Transportation (DOT)
for additional information on proper
transportation techniques and truck/trailer
requirements.
Lifting Safety
•Move yourself and all others
away from the lifting area when
hoisting the machine to prevent
being crushed underneath.
•Secure the appropriate hoisting cables, straps,
and/or chains to the machine’s designated lift
points on the frame prior to hoisting it.
•DO NOT attempt to lift the machine irresponsibly
and/or improperly.
Belt Safety
• Turn off the engine prior to servicing the belts.
• Let the belts cool down prior to servicing them.
• Regularly inspect the belts for fraying, stress
cracks, and/or breakage and replace
immediately when damaged.
•Over-tensioning the belts may damage the
engine crankshaft. Under-tensioning the belts
may cause slippage, shorter belt life, and poor
alternator performance.
•Make sure the belts are aligned prior to
operating the machine.
Transporting Safety
•Close the fuel shutoff valve when transporting
the machine.
•Drain the fuel tank when transporting the
machine long distances.
•Use heavy-duty ramps that will support the
weight of the machine and yourself when
loading or unloading.
•The towing truck/trailer should be in good
working condition.
•Use extreme caution when guiding the machine
up and down ramps. Slowly drive the machine
forward down the ramp, or slowly back the
machine in reverse up the ramp. Avoid standing
directly downhill from the machine to avoid
serious injuries.
•Turn off the engine once the machine is loaded
into the truck/trailer.
•Chock the wheels and secure the machine in
the truck/trailer prior to transporting.
Introducing the UDM
1. Handlebar
5
Components
The UDM is a self-contained, self-propelled drilling machine with electric and hydraulic power outlets.
2. Handlebar Lock Pin/Knob
3. Water Tank
4. Front Control Panel
5. Light Tower
6. Heat Exchanger
7. Frame
8. Alternator
9. Vacuum Base
10. Mast
11. Hydraulic Oil Tank
12. Main Hydraulic Manifold
13. Spindle Shaft
14. Pillow Block
15. Hydraulic Cylinder
16. Rear Control Panel and DC
Fuses
17. Engine
18. Front Tires
19. Rear Tires
20. Drive Lever
21. Electrical Outlets and Circuit
Breakers
Controls
1. Strobe Light – Powers strobe light.
12. Vacuum Valve – Holds or releases vacuum.
6
Side Control Panel
2. Power Indicator - Indicates power supply to
machine.
3. Vacuum Switch – Turns vacuum pump ON/OFF.
4. Rear Stabilizer Switch – Raises and lowers rear
stabilizer.
5. Vacuum Lift Switch – Raises and lowers vacuum
base.
6. Digital Readout – Indicates Bit RPM.
7. Auto Drill Switch – Locks the drill down function
until cylinder reaches maximum length, or until
switch is turned off. Drill Down, Drill Up, and Turbo
buttons do not work when Auto Drill switch is
activated.
8. Drill Up Push Button – Raises Core Bit.
9. Emergency Stop – Stops engine and all systems of
machine.
10. Drill Down Pushbutton – Lowers core bit.
11. Pressure Switch Adju ster –Adjust pressure to core
2. Function Switch – Three position switch. Up position is Drill mode, center is Start/Neutral Mode,
and down position is Drive Mode.
3. Emergency Stop Button – Stops engine and all systems of machine.
Ultimate Drilling Machine Specifications
Overall Height
81.75”
Overall Width
31.00”
Overall Length
73.25”
Overall Length W/ Handlebars Extended
99.25”
Weight (Add 450lbs. For Fuel, Hydraulic Fluid, and Water)
1100 lbs.
Core But Diameter
4.00”-24.00”Ø
Spindle Shaft Thread
1.25”-7.00”
Belt Drive
Single Belt
Core Bit Coolant
Water
Handle Bars
Single Position, Variable Lengths
Drive Speed
3.25 MPH Maximum
Electrical Power
5000 Watts
Electrical Outlets
115V and 230V single phase twist lock, 115V GFI.
Hydraulic Power Supply
2000 PSI Maximum
Hydraulic Power Flow Control
14 GPM
Hydraulic Quick Disconnects
½”
Fuel Capacity
9.00 Gallons
Water Tank Capacity
44 Gallons
Hydraulic Tank Capacity
12 Gallons
Engine Tachometer / Hour Meter
Standard
Core But RPM Tachometer
Standard
Work light
Standard
Strobe Light
Standard
Hole Locator
Standard
Engine Specifications
Manufacturer
Honda
Model
GX660
Fuel Type
Unleaded Gasoline
Air Filter
Dual Element
Low Oil Alert
Standard
Electric Start
Standards
NOTE: Refer to engine manual for additional engine specifications and info.
73.25”
81.75”
31.00”
8
Light Tower
9
Use the strobe light to alert others when operating
the machine. Use the spotlight for additional
lighting as necessary.
Fuel System
DO NOT operate the machine with a fuel leak.
DO NOT fuel the machine with the engine running.
DO NOT smoke or expose fuel to open
flames when filling the fuel tank or
working with fuel.
Clean up spilled fuel prior to starting the engine.
Fueling the Machine
1. Turn off the engine and let the machine cool
down.
2. Remove the fuel tank cap.
3. Fill the fuel tank with unleaded gasoline as
necessary. Refer to the engine manual for fuel
ratings and additional refueling information.
4. Replace the fuel tank cap.
Lift Points
There are two welded loops, one on each side of the
frame at the rear of the machine, and there is one
shackle near the top of the frame column at the front of
the machine. Secure the lifting cables, straps, and/or
chains to these three points and adjust them so the
overall lift point is near the front axle. Note: The empty
center of gravity is just behind the front axle. This
location will shift toward the rear slightly with a full water
tank.
Fuel Shutoff Valve
5. Open the shutoff valve to open the fuel lines.
6. Close the shutoff valve to close the fuel lines.
Battery
Ignitable explosive gases are emitted
from the battery. DO NOT expose the
battery to sparks or open flames, and
keep the area around the battery wellventilated.
Use a proper battery tester when testing
the battery strength.
Use protective eyewear or a face shield
and avoid any contact with the skin
when handling/servicing the battery
The machine contains a charged battery with one
positive cable lead and one negative cable lead.
Master Battery Disconnect
The master battery disconnect connects or
disconnects the battery’s circuit. Note: The master
battery disconnect must be on prior to starting the
engine.
10
1. Turn on the master battery disconnect to
connect the circuit (the indicator light directly
below will light up when activated). Note: The
strobe light, spotlight, water pump, and rear
and front raise/lower cylinders will operate with
the engine off and master battery disconnect
on. Be careful not to drain the battery when
using these items with the engine off and
battery connected.
2. Turn off the master battery disconnect to
disconnect the circuit.
Engine
Stopping the Engine
•DO NOT leave the machine unattended
until the engine is off and the core bit has
stopped spinning.
1. Turn off all switches/controls.
2. Move the function switch to Start/Drive.
3. Decrease the throttle to Min.
4. Turn the ignition key to Off and remove the key.
Drive Lever
•DO NOT leave the engine running unattended.
Operate the machine in wellventilated areas. Concentrated
engine exhaust can cause loss of
consciousness and/or death.
Refer to the engine manual as the primary source
for information regarding the engine.
Tasks Prior to Starting the Engine
Complete the tasks listed below prior to starting the
engine to ensure a proper start.
• Check fluids and fill to appropriate levels.
• Turn off controls and switches.
• Pull out emergency stop buttons.
• Set engine throttle to Min.
• Remove tools from work area.
• Raise core bit off ground.
Starting the Engine
1. Open the fuel shutoff valve.
2. Move the function switch to Start/Drive. Close
the choke on the engine (not required on warm
engine).
3. Turn on the master battery disconnect.
4. Increase the throttle by 1/3.
5. Insert the ignition key, turn to Start, and release
when the engine starts. If the engine doesn’t
start, release the key and try again after 10
seconds. Note: Refer to the engine manual if the engine doesn’t start after several attempts.
6. Gradually open the choke as the engine warms
up.
7. Increase the throttle on the engine to Max.
When driving the machine forward
or backward, be alert to the
surrounding environment to avoid
harming yourself, others, or the
machine.
The drive lever moves the machine at variable
speeds based on its position. The maximum driving
speed with the engine running is ~3.25 mph. Use the
handlebars to lift the rear tires off the ground and
pivot, push, or pull the machine manually.
1. Move the function switch to Start/Drive.
2. Push the drive lever down to move the machine
forward. Release the lever to stop.
3. Pull the drive lever up to move the machine in
reverse. Release the lever to stop.
Water System
11
Use extreme caution when
operating the machine on slopes,
as it is more susceptible to sideways
tipping/rolling over, especially with
a full water tank.
The water system cools the core bit and flushes
slurry from the drilling hole. Note: Always test the
water supply for adequate pressure and flow prior
to drilling.
Filling the Water Tank
Filling the Water Tank
1. Remove the water tank cap(s) and fill the tank
with water as necessary. Note: The clear hose at the rear of the tank indicates the water level.
2. Replace the cap(s) when finished.
NOTE: Too much water makes the slurry look clear
and waste water, insufficient water makes slurry
thick and can result in a core sticking in bit.
Draining Water System
1. Be certain the area is safe for draining
water.
2. Open large valve located on the front right
side of machine.
3. Complete draining is only required in areas
where temperatures result in freezing, or
machine is going to be stored for a long
period of time.
Vacuum System
DO NOT stand on the
machine to act as an
anchor. Use the vacuum
pump to anchor the
machine.
The vacuum system is only used during the drilling
operation when the base is firmly on the ground;
this adds stability to the system and should be used
whenever possible. Cleaning and wetting the
surface with the garden hose helps to ensure a
proper seal.
Using the Water Supply
1. Open the water valve directly under the water
tank. DO NOT confuse this valve with the water
release valve, which is located near the side of
the tank.
2. Turn on the Water switch.
3. Open the water valve.
4. Adjust the water flow valve to increase or
decrease water flow to the core bit. Note: Using
too much water when drilling will make the slurry
look clear. Not using enough water will make
the slurry look thick and pasty, and could result
in a stuck bit.
5. Use the attached water hose for cleaning or
other tasks as needed. This hose functions as a
typical garden hose. Note: Turn on the master
battery disconnect to use the water hose with
the engine off. DO NOT drain the battery.
6. Decrease the water flow and close the water
valve when finished.
7. Turn off the Water switch. Note: Always turn off
this switch when finished drilling to avoid
draining the battery.
Using the Vacuum
1. Turn on the circuit breakers.
2. Close the vacuum valve on side dash.
3. Turn on the Vacuum switch.
4. Open the vacuum valve to release suction
when finished.
5. Turn off the Vacuum switch.
Vacuum Gauge
The vacuum gauge indicates that the vacuum
system is working. Vacuum pressure should max out
at 25” Hg. Note: Poor vacuum suction may indicate
loose hose fittings; loose water trap jars; worn
vacuum base seals; or the base may be placed
over a cracked/scored surface where suction is not
possible.
Water Jars
12
The primary jar is mounted on the water tank
next to the side dash unit and helps keep
water and other contaminates from being
sucked into the pump. The secondary jar is
located adjacent to the vacuum pump
behind the form right wheel of the machine.
Visually inspect and empty the containment jar
on a regular basis. The jars unscrews by hand.
Failure to empty this jar will result in vacuum
pump damage.
Primary Water Jar
Secondary Water Jar
Drill Mode
Introduction and Initial Settings: The following
items can only be used or adjusted with the
function switch in DRILL mode. The
recommended pressure settings are maximum
limits. They will typically only be reached
intermittently if rebar or hard spots are
encountered when drilling.
Cylinder Pressure
The cylinder pressure controls how hard the bit
pushes downward. The pressure is factory set
at 200 psi and should rarely need adjustments.
Monitor the cylinder pressure using the 500 psi
gauge on the main hydraulic manifold and
adjust to the factory setting as necessary.
1. Start the engine.
2. Move the function switch to Drill.
3. Turn off the Drill Rpm cartridge.
4. If no bit is attached to the machine, press the
Drill Down button to fully extend the cylinder. If
a bit is attached to the machine, place a sturdy
block of wood under the bit and press the Drill Down button to push the bit against the piece
of wood (as if trying to lift the front end of the
machine).
5. Holding the Drill Down button, adjust the
Cylinder Pressure Base End valve on the main
hydraulic manifold to adjust the cylinder
pressure. DO NOT exceed 200 psi when drilling
without the vacuum. Note: Use caution and
good judgment when increasing the pressure
above 200 psi, which will increase the risk of
jammed bits.
6. Press the Drill Up button to raise the cylinder for
proper ground clearance.
Cylinder Speed
While holding the drill DOWN switch, turn the
small black knob at the top right of the main
hydraulic manifold. This sets the maximum
speed the drill can move (unless in TURBO
mode) and should be set to the slow end of
the adjustment, Slow speed is particularly
important at initial drill to ground contact. This
setting should rarely need adjustment.
Drill Motor Pressure Switch
Cylinder Speed
Adjustable
13
An adjustable pressure switch monitors the drill
motor pressure and will automatically shift the
cylinder to neutral (stops pushing) if it senses
the drill motor pressure rises above 1500 psi
(hard spots). The cylinder will then
automatically cycle ON/OFF as the drill works
through rebar or other hard spots.
• DO NOT exceed the core bit’s
maximum recommended
speed when drilling. Excessive
drilling speeds at first contact
with the concrete surface can
cause bit breakage, resulting in serious
injuries and/or death.
• DO NOT use damaged core bits when
drilling to avoid harming yourself, others, or
the machine.
Diamond Core Bits
Using the proper core bit (size and type)
preserves the bit and improves drilling and
operator efficiency, resulting in lower costs.
Refer to www.diamondproducts.com for
additional drilling and core bit information.
Inspecting the Core Bit
Inspect each core bit prior to installation and
discard all damaged bits. Inspect all core bits
for:
Raising and Lowering the Drill
The DRILL DOWN, DRILL UP, and TURBO switches
are intermittent switches and must be held to
operate. Holding UP or DOWN and TURBO will
raise and lower the drill more rapidly for initial
positioning and quickly pulling a bit out of a
hole. These switches will not work when the
AUTO DRILL mode is selected.
Raising and Lowering Frame and Mast
To establish a more solid base, the pneumatic
tires are raised off the ground. This same action
places the vacuum base firmly on the ground.
Electric cylinders at the front and rear of the
machine are controlled by intermittent
switches located on the main side control
panel. The frame should be raised until the
front tires are just clear of the ground.
Independently adjusting the front and rear
controls allows slight leveling of the machine.
Pressure Switch
Adjuster
• Cracks, nicks, and dents on barrel
• Darkness and/or discoloration near
edge of bit
• Uneven wear
• Missing segments
• Bent segments
• Segment cracks
Core Bit Speeds
Refer to the chart on the machine for the
recommended core bit speeds when drilling.
DO NOT exceed the maximum recommended
drilling speed.
Installing a Core Bit
• Be extremely careful when
installing a core bit by hand
with the spindle shaft
activated to avoid
entanglement.
• Failure to properly secure the core bit to the
spindle shaft may cause the bit to loosen or fall
off the machine.
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