MBW HORNET 36/40 User manual

HORNET 36/40
OPERATOR/SERVICE MANUAL
MBW Inc.
250 Hartford Rd
Slinger, WI 53086
Contact
Phone: [phone]
Email: [e-mail]
Revision Date: 07/18/2023 L22947 07-23 B

Dowel Drill Manual 2
TABLE OF CONTENTS
See engine manual for information pertaining
to the engine.
If there are any questions regarding the
machine or its application which are not
covered in this manual or in other literature
accompanying this unit, please contact your
MBW Dealer or MBW Inc. at 800-678-5237 or
[e-mail]
It is MBW’s policy to constantly strive to im-
prove our products. The information, speci-
cations, and illustrations in this publication
are based on the information in effect at the
same time as approval for printing and pub-
lishing. MBW therefore reserves the right to
make changes in design and improvements
whenever it is believed the efciency of the
machine which has been shipped or curring
any obligation to incorporate such im-
provements in any machine which has been
shipped or is in service. It is recommended
that users contact MBW or a MBW Dealer for
latest revisions.
Chapter 1-Introduction......................................................................................................................................1
General Warnings...................................................................................................................................3
General Safety..........................................................................................................................................4
General Specications............................................................................................................................9
Safety Decal Location..........................................................................................................................10
Chapter 2-...........................................................................................................................................................12
Control& Gauges...................................................................................................................................12
RecommendedLubricants...................................................................................................................13
Troubleshooting Air Drill.....................................................................................................................14
Parts Manual (30# Hammer)...............................................................................................................16
Parts Manual (50# Hammer)...............................................................................................................18
Parts Manual..........................................................................................................................................20
Warranty................................................................................................................................................24

3
Dowel Drill Manual
GENERAL WARNINGS
CALIFORNIA PROPOSITION 65
Engine exhaust and some of its constituents,
and some dust created by power sanding,
sawing, grinding, drilling and other construction
activities contains chemicals known to the Sate
of California to cause cancer, birth defects and
other reproductive harm. Some examples of
these chemicals are:
Lead from lead-based paints.
Crystalline silica from bricks.
Arsenic and chromium from chemically treated
lumbar.
Your risk from these exposures caries, depend-
ing on how often you do this type of work. To
reduce your exposure to these chemicals:
ALWAYS work in a well ventilated area, and
work with improved safety equipment, such
as dust masks that are specically designed to
lter out microscopic particles.
SILICOSIS WARNING
Grinding/cutting/drilling of masonry, concrete,-
metal and other materials with silica in their
composition may give off dust or mist contain-
ing crystalline silica.
Silica is a basic components of sand, quarts,
brick clay, granite and numerous other minerals
and rocks. Repeated and/or substantial inha-
lation of airborne crystalline silica can cause
serious or fatal respirator disease, including sil-
icosis. In addition, California and some author-
ities have listed repairable crystalline silica as a
substance known to cause cancer. When cutting
such materials, always follow the respiratory
precautions mentioned above.
RESPIRATORY HAZARDS
Grinding/cutting/drilling of masonry, concrete,metal and fumes containing
chemicals known to cause serious or fatal injury or illness, such as respirato-
ry disease, cancer, birth defects or other reproduction harm, if you are
unfamiliar with the risks associated with the particular process and/or
material being cut or the composition of the tool being used, review the
material safety data sheet and/or consult your employer, the material
manufacturer/supplier, governmental agencies such as OSHA and NIOSH
and other sources on hazardous materials. California and some other
authorities, for instance, have published lists of substances known to cause
cancer, reproductive toxicity or other harmful effects.
Control dust, mist and fumes at the source where possible. In this regard use good work practices and
follow the recommendations of the manufactures of suppliers, OSHA/NIOSH, and occupational and
trade associations. Water should be used for dust suppression when wet cutting is feasible. When the
hazards from inhalation of dust, mist and fumes cannot be eliminated, the operator and any bystand-
ers should always wear a respirator approved by OSHA/NIOSH for the materials being used.

Dowel Drill Manual 4
GENERAL SAFETY
SYMBOL SAFETY HAZARD
Lethal exhaust gas hazards
Explosive fuel hazards
Burn hazard
Factory Settings
SAFETY SYMBOLS
Potential hazards associated with the operation
of this equipment will be referenced with hazards
symbols which may appear throughout this manu-
al in conjunction with safety messages.
Indicates a hazardous situation which, if not
avoided, COULD result in DEATH or SERI-
OUS INJURY
Indicates a hazardous situation which, if not
avoided, COULD result in MINOR or MOD-
ERATE INJURY
Indicates a hazardous situation which, if not
avoided, WILL result in DEATH or SERIOUS
INJURY
Addresses practices not related to personal
injury
SAFETY MESSAGES
The four safety messages shown below will
inform you about potential hazards that could
injure you or others. The safety messages specif-
ically address the level of exposure to the opera-
tor and are preceded by one of four words:
DANGER, WARNING, CAUTION or NOTICE.
Do not operate or service the equipment before
reading the entire manual. Safety precautions
should be followed at all times when operating this
equipment. Failure to read and understand the safe-
ty messages and operating instructions could result
in injury to yourself and others.
This operation manual has been developed to pro-
vide complete instruction for the safe and efcient
operation. Refer to the engine manufactures instruc-
tions for data relative to its safe operation. Before
using, ensure that the operating individual
has read and understood all instructions in the
manual. The surrounding environment and you,
could be damaged if you do not follow instructions.
DO NOT USE TOOL IF IT IS IN NEED OF SERVICE!

5
Dowel Drill Manual
GENERAL SAFETY
∆ NEVER operate this equipment without
proper protective clothing, shatter proof
glasses, respirator protection, hearing pro-
tection, steel-toes boots and other protec-
tive devises required by the job or city and
sate regulations.
∆ Never operate this equipment
when not feeling well due to
fatigue, illness or when under
medication.
∆ NEVER operate this equipment under the
inuence of drugs or alcohol.
∆ ALWAYS check the equipment for loosened
threads or bolts before starting.
∆ NEVER operate around corrosive chemicals
or water containing toxic substances. These
uids could create serious health and envi-
ronmental hazards. Contact local authorities
for assistance.
∆ DO NOT use the equipment for any purpose
other than its intended purpose or applica-
tions.
∆ This equipment should only be operated by
trained and qualied personnel 18 years of
age and older.
∆ This equipment is for industrial use only.
Whenever necessary, replace nameplate,
operation and safety decals when
they become difcult to read.
∆ Manufacturer does not assume responsibility
for any accident due to equipment modica-
tions. Unauthorized equipment modications
will void all warranties. Any modication
which it could lead to change in the original
characteristics of the machine should be
made only by the manufacturer who shall con-
rm that the machine is in comfortability with
appropriate safety regulations.
∆ Never use accessories or attachments that are
not recommended by MBW for the equipment.
Damage to the equipment and/or injury to user
may result.
∆ Always know the location of the
nearest re extinguisher.
∆ ALWAYS know the location of the
nearest rst aid kit.
∆ ALWAYS know the location of the nearest
phone or keep a phone on the job site. Also,
know the phone numbers of the nearest
ambulance, doctor and re department. This
information will be invaluable in the case of an
emergency.
∆ NEVER operate the equipment in an
explosive atmosphere, near combus-
tible materials, or near ammable or
low ash point uids. An explosion or
re could result causing severe bodily
harm or even death.
∆ NEVER disconnect any emergency or safety
devices. These devises are intended for op-
erator safety. Disconnection of these devices
can cause severe injury, bodily harm or even
death. Disconnection of any of these will void
all warranties.
∆ NEVER operate equipment with the covers or
guards removed. Keep ngers, hands, hair and
clothing away from all moving parts to prevent
injury. Wear clothing that will not likely be-
come caught in the equipment or snag on any
moving parts.
∆ALWAYS be sure the operator is familiar
with the proper safety precautions and op-
erating techniques before using.
∆NEVER leave the machine unattended.
Turn off when unattended

Dowel Drill Manual 6
GENERAL SAFETY
∆ DO NOT expose vibrator to rain.
∆ DO NOT use vibrator motor in damp or wet
locations without proper electrical circuits.
∆ DO NOT immerse the motor part in con-
crete.
∆ ALWAYS keep clear of rotating or moving
parts while operating.
∆ NEVER leave the machine unattended while
running
∆ ALWAYS disconnect the motor from the
power source when not in use, before servic-
ing, and when changing exible shafting and
vibrator heads.
∆ Allow the machine to cool
before servicing. Contact with
hot components can cause
serious burns.
∆ Before Each use, ALWAYS check the motor
to make certain that there are no damaged
parts and that all parts function properly.
If any damage or malfunctioning parts are
found, have them repaired or replaced by an
authorized service facility.
∆ ALWAYS secure forms. Make sure the form
work is well made and braced to withstand
the stresses made by vibration.
∆ ALWAYS keep vibrator motor clean for bet-
ter and safer operation.
∆ ALWAYS store equipment properly when
it is not being used. Equipment should be
stored in a clean, dry location out of reach
of children and unauthorized personnel.
∆ Use only factory authorized replacement
parts.
∆ Store idle vibrator motor. When not in use,
motor should be stored in a dry, safe stor-
age area.
∆ DO NOT pour waste or oil directly into the
ground, down a drain or into any water
source.
ENVIRONMENTAL SAFETY/DECOMMISSIONING
∆ Contact your country depart-
ment of Public Works or recycling
agency in your area and arrange
for proper disposal of any elec-
trical components, waste or oil
associated with this equipment.
∆ When the life cycle of this equipment is over,
remove battery (if equip) and bring to appro-
priate facility for lead reclamation. Use safety
precautions when handling batteries that
contain sulfuric acid.
∆ When the life cycle of this equipment is over,
it is recommended that the unit frame and
all other metal parts be sent to a recycling
center.
Metal recycling involves the collection of
metal from discarded products and its trans
formation into raw materials to use in many
Manufacturing a new product.
Recyclers and manufactures alike promote the
process of recycling center promotes energy
cost savings.
Decommissioning is a controlled process used to
safely retire a piece of equipment that is no longer
serviceable. If the equipment poses an unaccept-
able and unrepairable safety risk due to wear or
damage or is no longer cost effective to maintain
(beyond life-cycle reliability) and is to be decommis-
sioned (demolition and dismantlement), be sure to
follow rules below.
∆ ALWAYS observe all applicable compulsory reg-
ulations relevant to environmental protection,
especially fuel storage, the handling of hazard-
ous substances, and the wearing of protective
clothing and equipment. Instruct the user as a
necessary, or, as the user, request this informa-
tion and training.

7
Dowel Drill Manual
GENERAL SAFETY
∆ ALWAYS keep the machine in proper running
condition.
∆ ALWAYS become familiar with the compo-
nents of the machine before operation.
∆ Fix damage to machine and replace any bro-
ken parts immediately.
∆ ALWAYS store equipment properly when it is
not being used. Equipment should be stored
in a clean, dry location out of the reach of
children and unauthorized personnel.
∆ NEVER lubricate components or attempt ser-
vice on a running machine
∆ NEVER tamper with the factory
settings of the engine or en-
gine governor. Damage to the
engine or equipment can result
in operation in speed ranges
above the maximum allowabil-
ity.
∆ ALWAYS Dispose of hazardous waste proper-
ly. Examples of potentially hazardous waste
include used motor oil, fuel, and fuel lters.
∆ DO NOT use food or plastic containers to
dispose hazardous waste.
∆ DO NOT pour waste or oil directly onto the
ground, down or drain or into any waste
source.
BEFORE CONNECTING THE AIR COMPRESSOR:
∆ NEVER attempt to loosen any compressed air
hose that is pressurized.
∆ KEEP AWAY from all hot or spark generating
objects, do not smoke when handling fuel.
∆ So as to facilitate shipment, new or repaired
units are not lubricated before delivery to cus-
tomers.
∆ DO NOT use hydrocarbons and especially do
not use fuel oil for lubricating purposes.
∆ DO NOT OPERATE MACHINE WITHOUT
GUARDS AND COVERS IN PLACE
∆ ALWAYS disconnect the air supply before chang-
ing steel or dismantling the tool for service or
repair. For maximum safety we advise the in-
stallation of a shut-off valve at the end of the air
line.
∆ NEVER operate the engine with heat shields or
guards removed.
∆ DO NOT remove the engine oil drain plug while
the engine is hot. Hot oil will gush out of the
engine crankcase and severely scald any persons
in the general area of the machine.
∆ Install the drill steel and bits into the drill motors
and close the latch retainers and rod guides.
∆ Make sure that the air compressor is set at an
operating pressure of not more than 120 PSIG
(8Bar)
∆ Make sure air line is cleaned out and is of the
proper size and pressure rating for the drill unit.
∆ Make sure the lubricator is lled with proper
lubricant. See MBW’s recommended lubricant
below.
∆ Make sure all controls are in the “off” position
and the lift lever (if so equipped) is in the “up”
position.
∆ Make sure all lock pins are in their locked posi-
tion.
WARNING
NOISE MAY
DAMAGE HEARING
WEAR PROPER HEARING
PROTECTION
FLYING PARTICLES MAY CAUSE
EYE INJURIES
WEAR PROPER EYE
PROTECTION
HIGH PRESSURE
KEEP AWAY FROM LEAKS
BLEED DOWN BEFORE REMOVING
LINES TO SERVICE
DUST CAN CAUSE INJURY TO
YOUR HEALTH
IF VENTILATION IS INADEQUATE
USE AN APPROVED RESPIRATOR
12 28 7- 3
DRILLS WILL
AUTOMATICALLY START
WHEN AIR SUPPLY IS LOST
AND REAPPLIED
12287-64
WARNING
WARNING
BE SURE SUPPLY LINES ARE SECURE
DO NOT EXCEED 120 PSI (8.25 BARS)
OR DAMAGE TO MACHINE AND OR
BODILY HARM MAY RESULT
12287-1
INSTALL LOCK
PIN PRIOR TO
TRANSPORTING MACHINE
12287-7
INSTALL LOCK
PIN PRIOR TO
TRANSPORTING MACHINE
12287-7
INSTALL LOCK
PIN PRIOR TO
TRANSPORTING MACHINE
12287-7
WARNING
KEEP GUARDS IN PLACE
DISCONNECT POWER
BEFORE SERVICING 12287-12
WARNING
KEEP GUARDS IN PLACE
DISCONNECT POWER
BEFORE SERVICING 12287-12
12287-62 12287-62
12287-62 12287-62
XX
X
X
DRILLS
FEED
1 2 ON ON
OFF OFF
IN IN
OUT OUT
TM
WARNING
STAND CLEAR
WHEN RAISING OR LOWERING
12287-10
12287-43
READ & UNDERSTAND OWNERS MANUAL COMPLETELY.
TIGHTEN ALL LOOSE BOLTS INSPECT ALL LINES, PIPES, AND HOSES FOR DAMAGE.
REPAIR AS NECESSARY.
DRILL STEEL MUST NOT BE BINDING IN GUIDE BEARING. MAKE SURE DRILL STEEL
IS STRAIGHT, FREE OF OBSTRUCTIONS, AND NOT BINDING IN ANYWAY.
FILL THE OILER-PER MANUAL.
WARNING
STAND CLEAR
WHEN RAISING OR LOWERING
12287-10
Bio-Rock Drill Oil 15W50
TM
Minnich Mfg. Recommended Rock Drill Oil
A-2-BW
A-2-BW

Dowel Drill Manual 8
GENERAL SAFETY
Connect/start
Storage
If the vibration intensity drops, check that the
lters are not clogged or that hoses are not
kinked.
To properly store unit after use, hang the
vibrator with the head up and set the handle
(variable control assembly) in the open position
to permit the discharge of possible impurities,
contaminants and water.
Placement and consolidation
The force exerted by an internal concrete vibra-
tor is controlled by the weight and the speed
at which the eccentric rotates. The centrifugal
force exerted can be arrived at by various com-
binations of weight (size of eccentric weight)
and the speed at which the weight rotates. For
years the most favorable working speed for a
vibrator was considered to be around 10,200
RPM (VPM) and consequently this gure is used
in many vibrator comparisons. More recently,
the optimum speed for compaction has been
accepted as being between 7500 and 9000
RPM.
To nd the latest revision of this publication,
visit our website at: www.mbw.com
THIS MANUAL MUST ACCOMPANY THE
EQUIPMENT AT ALL TIMES.
Specications and part numbers are subject
to change without notice.
∆ Stay alert, watch what you are doing, and use
common sense when operating the machine.
∆ DO NOT use the tool while tired or under the
inuence of drugs, alcohol, or medication. A
moment of inattention while operating power
tools may result in serious personal injury or
death.
∆ Dress properly. DO NOT wear loose clothing or
jewelry. Tie up long hair. Keep your hair, cloth-
ing and gloves away from moving parts. Loose
clothes, jewelery, or long hair can be caught in
moving parts.
∆ DO NOT overreach. Keep proper footing and
balance at all times. Proper footing and balance
enables better control in unexpected situations.
PERSONAL SAFETY
SERVICE
∆ Tool service must be preformed only by qual-
ied repair personnel. Service or maintained
preformed by unqualied personnel could
result in injury or death
∆ When servicing a tool, use only identical
replacement parts. Use of unauthorized parts
may create a risk of injury or death.
∆ CLEAR AIR SUPPLY LINE: Before connecting
vibrator, clear the compressed air supply line of
possible impurities, contaminants and water.
∆ LUBRICATE: Every day or every four hours
of continuous service, pour a ½ teaspoon of
non-detergent oil into the quick release cou-
pling. NOTE: An optional oiler/strainer is avail-
able.

9
Dowel Drill Manual
GENERAL SPECIFICATION
The Hornet 36/40
Net Weight 51lbs. (23kg)
Blows Per Minute 2300
Chuck Size 7/8” X 3 1/4” (22.2mm X 82.55mm)
Air Inlet (NPT) 3/4” (19.1mm)
Air Consumption 92.2cfm (2.6m3/min)
50# Hammer Specifications
Net Weight 30lbs. (13.6kg)
Blows Per Minute 2700
Chuck Size 7/8” x 3 1/4” (22.2mm x 82.6mm)
Air Inlet (NPT) 3/4” (19.1mm)
Air Consumption 73cfm (2.12m3/min)
30# HAMMER Specifications
Model Hornet 36/40
Drill Steel Shank (30#)
Drill Steel Shank (50#)
7/8” x 3-1/4”(22.2mm x 82.5mm)
7/8” x 3-1/4” (22.2mm x 82.5mm)
Drill Steel Length Seize Free (UC)
Drill Steel Length Standard Bit (UC)
40” (101.6cm) SF
36” (91.4cm) STD
Maximum Drill Depth Seize Free
Maximum Drill Depth Standard Bit
36” (91.4cm) SF
32” (81.3cm) STD
SCFM Required 92.2 (2.60 m3/min)
Weight (30lb 13.6kg Hammer)
Weight (50lb 23.0kg Hammer)
170lbs (77.11kg)
195lbs (88.45kg)

Dowel Drill Manual 10
SAFETY DECAL LOCATION
All safety labels on MBW Inc. units have been
carefully placed so they can be easily seen
at all times. There are several different types
of labels on the units. Always keep these
warnings free of dirt, concrete, or anything
else that restricts visibility. Never remove the
labels for any reason. If the label on your ma-
chine become worn or in any way difcult to
read, call our parts department for replace-
ments.
PRIOR TO
OPERATION
Read and understand
owners manual
completely.
Tighten all loose bolts,
inspect all lines, pipes,
and hoses for damage.
Repair as necessary.
Drill steel must not be
binding in guide
bearing. Make sure
drill steel is straight,
free of obstructions,
and not binding in any
way.
Fill the oiler per
manual. 12287-156
PINCH
POINT
KEEP AWAY
PINCH
POINT
KEEP AWAY
PINCH
POINT
KEEP AWAY
PINCH
POINT
KEEP AWAY
PINCH
POINT
KEEP AWAY
PINCH
POINT
KEEP AWAY
WARNING
NOISE MAY
DAMAGE HEARING
WEAR PROPER
HEARING PROTECTION
FLYING PARTICLES
MAY CAUSE
EYE INJURIES
WEAR PROPER EYE
PROTECTION
DUST CAN CAUSE
INJURY TO YOUR HEALTH
IF VENTILATION IS
INADEQUATE USE AN
APPROVVED RESPIRATOR
HIGH PRESSURE KEEP
AWAY FROM LEAKS
BLEED DOWN BEFORE
REMOVING
LINES TO SERVICE
HIGH PRESSURE
BLEED AIR PRESSURE
BEFORE SERVICING
HIGH PRESSURE
BLEED AIR PRESSURE
BEFORE SERVICING
INSTALL LOCK
PIN PRIOR TO
TRANSPORTING MACHINE
12287-7
WARNING
BE SURE SUPPLY LINES ARE SECURE
DO NOT EXCEED 120 PS I (8.25 BARS)
OR DAMAGE TO MACHINE AND OR
BODILY HARM MAY RESULT
12287-1
FEED
PRESSURE
Recommended
Settings
4-7 PSI
Bio-Rock Drill Oil 15W50
TM
Minnich Mfg. Recommended Rock Drill Oil
PRIOR TO
OPERATION
Read and understand
owners manual
completely.
Tighten all loose bolts,
inspect all lines, pipes,
and hoses for damage.
Repair as necessary.
Drill steel must not be
binding in guide
bearing. Make sure
drill steel is straight,
free of obstructions,
and not binding in any
way.
Fill the oiler per
manual. 12287-156
PINCH
POINT
KEEP AWAY
PINCH
POINT
KEEP AWAY
PINCH
POINT
KEEP AWAY
PINCH
POINT
KEEP AWAY
PINCH
POINT
KEEP AWAY
PINCH
POINT
KEEP AWAY
WARNING
NOISE MAY
DAMAGE HEARING
WEAR PROPER
HEARING PROTECTION
FLYING PARTICLES
MAY CAUSE
EYE INJURIES
WEAR PROPER EYE
PROTECTION
DUST CAN CAUSE
INJURY TO YOUR HEALTH
IF VENTILATION IS
INADEQUATE USE AN
APPROVVED RESPIRATOR
HIGH PRESSURE KEEP
AWAY FROM LEAKS
BLEED DOWN BEFORE
REMOVING
LINES TO SERVICE
HIGH PRESSURE
BLEED AIR PRESSURE
BEFORE SERVICING
HIGH PRESSURE
BLEED AIR PRESSURE
BEFORE SERVICING
INSTALL LOCK
PIN PRIOR TO
TRANSPORTING MACHINE
12287-7
WARNING
BE SURE SUPPLY LINES ARE SECURE
DO NOT EXCEED 120 PS I (8.25 BARS)
OR DAMAGE TO MACHINE AND OR
BODILY HARM MAY RESULT
12287-1
FEED
PRESSURE
Recommended
Settings
4-7 PSI
Bio-Rock Drill Oil 15W50
TM
Minnich Mfg. Recommended Rock Drill Oil
PRIOR TO
OPERATION
Read and understand
owners manual
completely.
Tighten all loose bolts,
inspect all lines, pipes,
and hoses for damage.
Repair as necessary.
Drill steel must not be
binding in guide
bearing. Make sure
drill steel is straight,
free of obstructions,
and not binding in any
way.
Fill the oiler per
manual. 12287-156
PINCH
POINT
KEEP AWAY
PINCH
POINT
KEEP AWAY
PINCH
POINT
KEEP AWAY
PINCH
POINT
KEEP AWAY
PINCH
POINT
KEEP AWAY
PINCH
POINT
KEEP AWAY
WARNING
NOISE MAY
DAMAGE HEARING
WEAR PROPER
HEARING PROTECTION
FLYING PARTICLES
MAY CAUSE
EYE INJURIES
WEAR PROPER EYE
PROTECTION
DUST CAN CAUSE
INJURY TO YOUR HEALTH
IF VENTILATION IS
INADEQUATE USE AN
APPROVVED RESPIRATOR
HIGH PRESSURE KEEP
AWAY FROM LEAKS
BLEED DOWN BEFORE
REMOVING
LINES TO SERVICE
HIGH PRESSURE
BLEED AIR PRESSURE
BEFORE SERVICING
HIGH PRESSURE
BLEED AIR PRESSURE
BEFORE SERVICING
INSTALL LOCK
PIN PRIOR TO
TRANSPORTING MACHINE
12287-7
WARNING
BE SURE SUPPLY LINES ARE SECURE
DO NOT EXCEED 120 PS I (8.25 BARS)
OR DAMAGE TO MACHINE AND OR
BODILY HARM MAY RESULT
12287-1
FEED
PRESSURE
Recommended
Settings
4-7 PSI
Bio-Rock Drill Oil 15W50
TM
Minnich Mfg. Recommended Rock Drill Oil
PRIOR TO
OPERATION
Read and understand
owners manual
completely.
Tighten all loose bolts,
inspect all lines, pipes,
and hoses for damage.
Repair as necessary.
Drill steel must not be
binding in guide
bearing. Make sure
drill steel is straight,
free of obstructions,
and not binding in any
way.
Fill the oiler per
manual. 12287-156
PINCH
POINT
KEEP AWAY
PINCH
POINT
KEEP AWAY
PINCH
POINT
KEEP AWAY
PINCH
POINT
KEEP AWAY
PINCH
POINT
KEEP AWAY
PINCH
POINT
KEEP AWAY
WARNING
NOISE MAY
DAMAGE HEARING
WEAR PROPER
HEARING PROTECTION
FLYING PARTICLES
MAY CAUSE
EYE INJURIES
WEAR PROPER EYE
PROTECTION
DUST CAN CAUSE
INJURY TO YOUR HEALTH
IF VENTILATION IS
INADEQUATE USE AN
APPROVVED RESPIRATOR
HIGH PRESSURE KEEP
AWAY FROM LEAKS
BLEED DOWN BEFORE
REMOVING
LINES TO SERVICE
HIGH PRESSURE
BLEED AIR PRESSURE
BEFORE SERVICING
HIGH PRESSURE
BLEED AIR PRESSURE
BEFORE SERVICING
INSTALL LOCK
PIN PRIOR TO
TRANSPORTING MACHINE
12287-7
WARNING
BE SURE SUPPLY LINES ARE SECURE
DO NOT EXCEED 120 PS I (8.25 BARS)
OR DAMAGE TO MACHINE AND OR
BODILY HARM MAY RESULT
12287-1
FEED
PRESSURE
Recommended
Settings
4-7 PSI
Bio-Rock Drill Oil 15W50
TM
Minnich Mfg. Recommended Rock Drill Oil
PRIOR TO
OPERATION
Read and understand
owners manual
completely.
Tighten all loose bolts,
inspect all lines, pipes,
and hoses for damage.
Repair as necessary.
Drill steel must not be
binding in guide
bearing. Make sure
drill steel is straight,
free of obstructions,
and not binding in any
way.
Fill the oiler per
manual. 12287-156
PINCH
POINT
KEEP AWAY
PINCH
POINT
KEEP AWAY
PINCH
POINT
KEEP AWAY
PINCH
POINT
KEEP AWAY
PINCH
POINT
KEEP AWAY
PINCH
POINT
KEEP AWAY
WARNING
NOISE MAY
DAMAGE HEARING
WEAR PROPER
HEARING PROTECTION
FLYING PARTICLES
MAY CAUSE
EYE INJURIES
WEAR PROPER EYE
PROTECTION
DUST CAN CAUSE
INJURY TO YOUR HEALTH
IF VENTILATION IS
INADEQUATE USE AN
APPROVVED RESPIRATOR
HIGH PRESSURE KEEP
AWAY FROM LEAKS
BLEED DOWN BEFORE
REMOVING
LINES TO SERVICE
HIGH PRESSURE
BLEED AIR PRESSURE
BEFORE SERVICING
HIGH PRESSURE
BLEED AIR PRESSURE
BEFORE SERVICING
INSTALL LOCK
PIN PRIOR TO
TRANSPORTING MACHINE
12287-7
WARNING
BE SURE SUPPLY LINES ARE SECURE
DO NOT EXCEED 120 PS I (8.25 BARS)
OR DAMAGE TO MACHINE AND OR
BODILY HARM MAY RESULT
12287-1
FEED
PRESSURE
Recommended
Settings
4-7 PSI
Bio-Rock Drill Oil 15W50
TM
Minnich Mfg. Recommended Rock Drill Oil
PRIOR TO
OPERATION
Read and understand
owners manual
completely.
Tighten all loose bolts,
inspect all lines, pipes,
and hoses for damage.
Repair as necessary.
Drill steel must not be
binding in guide
bearing. Make sure
drill steel is straight,
free of obstructions,
and not binding in any
way.
Fill the oiler per
manual. 12287-156
PINCH
POINT
KEEP AWAY
PINCH
POINT
KEEP AWAY
PINCH
POINT
KEEP AWAY
PINCH
POINT
KEEP AWAY
PINCH
POINT
KEEP AWAY
PINCH
POINT
KEEP AWAY
WARNING
NOISE MAY
DAMAGE HEARING
WEAR PROPER
HEARING PROTECTION
FLYING PARTICLES
MAY CAUSE
EYE INJURIES
WEAR PROPER EYE
PROTECTION
DUST CAN CAUSE
INJURY TO YOUR HEALTH
IF VENTILATION IS
INADEQUATE USE AN
APPROVVED RESPIRATOR
HIGH PRESSURE KEEP
AWAY FROM LEAKS
BLEED DOWN BEFORE
REMOVING
LINES TO SERVICE
HIGH PRESSURE
BLEED AIR PRESSURE
BEFORE SERVICING
HIGH PRESSURE
BLEED AIR PRESSURE
BEFORE SERVICING
INSTALL LOCK
PIN PRIOR TO
TRANSPORTING MACHINE
12287-7
WARNING
BE SURE SUPPLY LINES ARE SECURE
DO NOT EXCEED 120 PS I (8.25 BARS)
OR DAMAGE TO MACHINE AND OR
BODILY HARM MAY RESULT
12287-1
FEED
PRESSURE
Recommended
Settings
4-7 PSI
Bio-Rock Drill Oil 15W50
TM
Minnich Mfg. Recommended Rock Drill Oil
PRIOR TO
OPERATION
Read and understand
owners manual
completely.
Tighten all loose bolts,
inspect all lines, pipes,
and hoses for damage.
Repair as necessary.
Drill steel must not be
binding in guide
bearing. Make sure
drill steel is straight,
free of obstructions,
and not binding in any
way.
Fill the oiler per
manual. 12287-156
PINCH
POINT
KEEP AWAY
PINCH
POINT
KEEP AWAY
PINCH
POINT
KEEP AWAY
PINCH
POINT
KEEP AWAY
PINCH
POINT
KEEP AWAY
PINCH
POINT
KEEP AWAY
WARNING
NOISE MAY
DAMAGE HEARING
WEAR PROPER
HEARING PROTECTION
FLYING PARTICLES
MAY CAUSE
EYE INJURIES
WEAR PROPER EYE
PROTECTION
DUST CAN CAUSE
INJURY TO YOUR HEALTH
IF VENTILATION IS
INADEQUATE USE AN
APPROVVED RESPIRATOR
HIGH PRESSURE KEEP
AWAY FROM LEAKS
BLEED DOWN BEFORE
REMOVING
LINES TO SERVICE
HIGH PRESSURE
BLEED AIR PRESSURE
BEFORE SERVICING
HIGH PRESSURE
BLEED AIR PRESSURE
BEFORE SERVICING
INSTALL LOCK
PIN PRIOR TO
TRANSPORTING MACHINE
12287-7
WARNING
BE SURE SUPPLY LINES ARE SECURE
DO NOT EXCEED 120 PS I (8.25 BARS)
OR DAMAGE TO MACHINE AND OR
BODILY HARM MAY RESULT
12287-1
FEED
PRESSURE
Recommended
Settings
4-7 PSI
Bio-Rock Drill Oil 15W50
TM
Minnich Mfg. Recommended Rock Drill Oil
PRIOR TO
OPERATION
Read and understand
owners manual
completely.
Tighten all loose bolts,
inspect all lines, pipes,
and hoses for damage.
Repair as necessary.
Drill steel must not be
binding in guide
bearing. Make sure
drill steel is straight,
free of obstructions,
and not binding in any
way.
Fill the oiler per
manual. 12287-156
PINCH
POINT
KEEP AWAY
PINCH
POINT
KEEP AWAY
PINCH
POINT
KEEP AWAY
PINCH
POINT
KEEP AWAY
PINCH
POINT
KEEP AWAY
PINCH
POINT
KEEP AWAY
WARNING
NOISE MAY
DAMAGE HEARING
WEAR PROPER
HEARING PROTECTION
FLYING PARTICLES
MAY CAUSE
EYE INJURIES
WEAR PROPER EYE
PROTECTION
DUST CAN CAUSE
INJURY TO YOUR HEALTH
IF VENTILATION IS
INADEQUATE USE AN
APPROVVED RESPIRATOR
HIGH PRESSURE KEEP
AWAY FROM LEAKS
BLEED DOWN BEFORE
REMOVING
LINES TO SERVICE
HIGH PRESSURE
BLEED AIR PRESSURE
BEFORE SERVICING
HIGH PRESSURE
BLEED AIR PRESSURE
BEFORE SERVICING
INSTALL LOCK
PIN PRIOR TO
TRANSPORTING MACHINE
12287-7
WARNING
BE SURE SUPPLY LINES ARE SECURE
DO NOT EXCEED 120 PS I (8.25 BARS)
OR DAMAGE TO MACHINE AND OR
BODILY HARM MAY RESULT
12287-1
FEED
PRESSURE
Recommended
Settings
4-7 PSI
Bio-Rock Drill Oil 15W50
TM
Minnich Mfg. Recommended Rock Drill Oil
PRIOR TO
OPERATION
Read and understand
owners manual
completely.
Tighten all loose bolts,
inspect all lines, pipes,
and hoses for damage.
Repair as necessary.
Drill steel must not be
binding in guide
bearing. Make sure
drill steel is straight,
free of obstructions,
and not binding in any
way.
Fill the oiler per
manual. 12287-156
PINCH
POINT
KEEP AWAY
PINCH
POINT
KEEP AWAY
PINCH
POINT
KEEP AWAY
PINCH
POINT
KEEP AWAY
PINCH
POINT
KEEP AWAY
PINCH
POINT
KEEP AWAY
WARNING
NOISE MAY
DAMAGE HEARING
WEAR PROPER
HEARING PROTECTION
FLYING PARTICLES
MAY CAUSE
EYE INJURIES
WEAR PROPER EYE
PROTECTION
DUST CAN CAUSE
INJURY TO YOUR HEALTH
IF VENTILATION IS
INADEQUATE USE AN
APPROVVED RESPIRATOR
HIGH PRESSURE KEEP
AWAY FROM LEAKS
BLEED DOWN BEFORE
REMOVING
LINES TO SERVICE
HIGH PRESSURE
BLEED AIR PRESSURE
BEFORE SERVICING
HIGH PRESSURE
BLEED AIR PRESSURE
BEFORE SERVICING
INSTALL LOCK
PIN PRIOR TO
TRANSPORTING MACHINE
12287-7
WARNING
BE SURE SUPPLY LINES ARE SECURE
DO NOT EXCEED 120 PS I (8.25 BARS)
OR DAMAGE TO MACHINE AND OR
BODILY HARM MAY RESULT
12287-1
FEED
PRESSURE
Recommended
Settings
4-7 PSI
Bio-Rock Drill Oil 15W50
TM
Minnich Mfg. Recommended Rock Drill Oil
PRIOR TO
OPERATION
Read and understand
owners manual
completely.
Tighten all loose bolts,
inspect all lines, pipes,
and hoses for damage.
Repair as necessary.
Drill steel must not be
binding in guide
bearing. Make sure
drill steel is straight,
free of obstructions,
and not binding in any
way.
Fill the oiler per
manual. 12287-156
PINCH
POINT
KEEP AWAY
PINCH
POINT
KEEP AWAY
PINCH
POINT
KEEP AWAY
PINCH
POINT
KEEP AWAY
PINCH
POINT
KEEP AWAY
PINCH
POINT
KEEP AWAY
WARNING
NOISE MAY
DAMAGE HEARING
WEAR PROPER
HEARING PROTECTION
FLYING PARTICLES
MAY CAUSE
EYE INJURIES
WEAR PROPER EYE
PROTECTION
DUST CAN CAUSE
INJURY TO YOUR HEALTH
IF VENTILATION IS
INADEQUATE USE AN
APPROVVED RESPIRATOR
HIGH PRESSURE KEEP
AWAY FROM LEAKS
BLEED DOWN BEFORE
REMOVING
LINES TO SERVICE
HIGH PRESSURE
BLEED AIR PRESSURE
BEFORE SERVICING
HIGH PRESSURE
BLEED AIR PRESSURE
BEFORE SERVICING
INSTALL LOCK
PIN PRIOR TO
TRANSPORTING MACHINE
12287-7
WARNING
BE SURE SUPPLY LINES ARE SECURE
DO NOT EXCEED 120 PS I (8.25 BARS)
OR DAMAGE TO MACHINE AND OR
BODILY HARM MAY RESULT
12287-1
FEED
PRESSURE
Recommended
Settings
4-7 PSI
Bio-Rock Drill Oil 15W50
TM
Minnich Mfg. Recommended Rock Drill Oil
PRIOR TO
OPERATION
Read and understand
owners manual
completely.
Tighten all loose bolts,
inspect all lines, pipes,
and hoses for damage.
Repair as necessary.
Drill steel must not be
binding in guide
bearing. Make sure
drill steel is straight,
free of obstructions,
and not binding in any
way.
Fill the oiler per
manual.
12287-156
PINCH
POINT
KEEP AWAY
PINCH
POINT
KEEP AWAY
PINCH
POINT
KEEP AWAY
PINCH
POINT
KEEP AWAY
PINCH
POINT
KEEP AWAY
PINCH
POINT
KEEP AWAY
WARNING
NOISE MAY
DAMAGE HEARING
WEAR PROPER
HEARING PROTECTION
FLYING PARTICLES
MAY CAUSE
EYE INJURIES
WEAR PROPER EYE
PROTECTION
DUST CAN CAUSE
INJURY TO YOUR HEALTH
IF VENTILATION IS
INADEQUATE USE AN
APPROVVED RESPIRATOR
HIGH PRESSURE KEEP
AWAY FROM LEAKS
BLEED DOWN BEFORE
REMOVING
LINES TO SERVICE
HIGH PRESSURE
BLEED AIR PRESSURE
BEFORE SERVICING
HIGH PRESSURE
BLEED AIR PRESSURE
BEFORE SERVICING
INSTALL LOCK
PIN PRIOR TO
TRANSPORTING MACHINE
12287-7
WARNING
BE SURE SUPPLY LINES ARE SECURE
DO NOT EXCEED 120 PSI (8.25 BARS)
OR DAMAGE TO MACHINE AND OR
BODILY HARM MAY RESULT
12287-1
FEED
PRESSURE
Recommended
Settings
4-7 PSI
Bio-Rock Drill Oil 15W50
TM
Minnich Mfg. Recommended Rock Drill Oil
A B C
D
H
I
J K
L
M N
F
G

11
Dowel Drill Manual
SAFETY DECAL LOCATION
PRIORTO
OPERATION
Readand understand
ownersmanual
completely.
Tightenall loose bolts,
inspectall lines, pipes,
andhoses for damage.
Repairas necessary.
Drillsteel must not be
bindingin guide
bearing.Make sure
drillsteel is straight,
freeof obstructions,
andnot binding in any
way.
Fillthe oiler per
manual.
12287-156
PINCH
POINT
KEEPAWAY
PINCH
POINT
KEEPAWAY
PINCH
POINT
KEEPAWAY
PINCH
POINT
KEEPAWAY
PINCH
POINT
KEEPAWAY
PINCH
POINT
KEEPAWAY
WARNING
NOISEMAY
DAMAGEHEARING
WEARPROPER
HEARINGPROTECTION
FLYINGPARTICLES
MAYCAUSE
EYEINJURIES
WEARPROPEREYE
PROTECTION
DUSTCANCAUSE
INJURYTOYOUR HEALTH
IFVENTILATIONIS
INADEQUATEUSEAN
APPROVVEDRESPIRATOR
HIGHPRESSUREKEEP
AWAYFROMLEAKS
BLEEDDOWNBEFORE
REMOVING
LINESTOSERVICE
HIGHPRESSURE
BLEEDAIRPRESSURE
BEFORESERVICING
HIGHPRESSURE
BLEEDAIRPRESSURE
BEFORESERVICING
INSTALLLOCK
PINPRIOR TO
TRANSPORTINGMACHINE
12287-7
WARNING
BESURESUPPLYLINES ARE SECURE
DONOTEXCEED120 PSI (8.25 BARS)
ORDAMAGETOMACHINE AND OR
BODILYHARMMAYRESULT
12287-1
FEED
PRESSURE
Recommended
Settings
4-7PSI
Bio-RockDrill Oil15W50
TM
MinnichMfg.RecommendedRockDrill Oil
PRIORTO
OPERATION
Readand understand
ownersmanual
completely.
Tightenall loose bolts,
inspectall lines, pipes,
andhoses for damage.
Repairas necessary.
Drillsteel must not be
bindingin guide
bearing.Make sure
drillsteel is straight,
freeof obstructions,
andnot binding in any
way.
Fillthe oiler per
manual.
12287-156
PINCH
POINT
KEEPAWAY
PINCH
POINT
KEEPAWAY
PINCH
POINT
KEEPAWAY
PINCH
POINT
KEEPAWAY
PINCH
POINT
KEEPAWAY
PINCH
POINT
KEEPAWAY
WARNING
NOISEMAY
DAMAGEHEARING
WEARPROPER
HEARINGPROTECTION
FLYINGPARTICLES
MAYCAUSE
EYEINJURIES
WEARPROPEREYE
PROTECTION
DUSTCANCAUSE
INJURYTOYOUR HEALTH
IFVENTILATIONIS
INADEQUATEUSEAN
APPROVVEDRESPIRATOR
HIGHPRESSUREKEEP
AWAYFROMLEAKS
BLEEDDOWNBEFORE
REMOVING
LINESTOSERVICE
HIGHPRESSURE
BLEEDAIRPRESSURE
BEFORESERVICING
HIGHPRESSURE
BLEEDAIRPRESSURE
BEFORESERVICING
INSTALLLOCK
PINPRIOR TO
TRANSPORTINGMACHINE
12287-7
WARNING
BESURESUPPLYLINES ARE SECURE
DONOTEXCEED120 PSI (8.25 BARS)
ORDAMAGETOMACHINE AND OR
BODILYHARMMAYRESULT
12287-1
FEED
PRESSURE
Recommended
Settings
4-7PSI
Bio-RockDrill Oil15W50
TM
MinnichMfg.RecommendedRockDrill Oil
PRIOR TO
OPERATION
Read and understand
owners manual
completely.
Tighten all loose bolts,
inspect all lines, pipes,
and hoses for damage.
Repair as necessary.
Drill steel must not be
binding in guide
bearing. Make sure
drill steel is straight,
free of obstructions,
and not binding in any
way.
Fill the oiler per
manual.
12287-156
PINCH
POINT
KEEP AWAY
PINCH
POINT
KEEP AWAY
PINCH
POINT
KEEP AWAY
PINCH
POINT
KEEP AWAY
PINCH
POINT
KEEP AWAY
PINCH
POINT
KEEP AWAY
WARNING
NOISE MAY
DAMAGE HEARING
WEAR PROPER
HEARING PROTECTION
FLYINGPARTICLES
MAYCAUSE
EYE INJURIES
WEAR PROPER EYE
PROTECTION
DUST CAN CAUSE
INJURYTO YOUR HEALTH
IF VENTILATIONIS
INADEQUATEUSE AN
APPROVVED RESPIRATOR
HIGH PRESSURE KEEP
AWAYFROM LEAKS
BLEED DOWN BEFORE
REMOVING
LINES TO SERVICE
HIGHPRESSURE
BLEEDAIR PRESSURE
BEFORESERVICING
HIGHPRESSURE
BLEEDAIR PRESSURE
BEFORESERVICING
INSTALL LOCK
PIN PRIOR TO
TRANSPORTING MACHINE
12287-7
WARNING
BESURE SUPPLYLINES ARE SECURE
DONOT EXCEED 120 PS I (8.25 BARS)
ORDAMAGE TO MACHINE AND OR
BODILYHARM MAY RESULT
12287-1
FEED
PRESSURE
Recommended
Settings
4-7 PSI
Bio-RockDrill Oil 15W50
TM
MinnichMfg.Recommended Rock Drill Oil
PRIOR TO
OPERATION
Read and understand
owners manual
completely.
Tighten all loose bolts,
inspect all lines, pipes,
and hoses for damage.
Repair as necessary.
Drill steel must not be
binding in guide
bearing. Make sure
drill steel is straight,
free of obstructions,
and not binding in any
way.
Fill the oiler per
manual.
12287-156
PINCH
POINT
KEEP AWAY
PINCH
POINT
KEEP AWAY
PINCH
POINT
KEEP AWAY
PINCH
POINT
KEEP AWAY
PINCH
POINT
KEEP AWAY
PINCH
POINT
KEEP AWAY
WARNING
NOISE MAY
DAMAGE HEARING
WEAR PROPER
HEARING PROTECTION
FLYINGPARTICLES
MAYCAUSE
EYE INJURIES
WEAR PROPER EYE
PROTECTION
DUST CAN CAUSE
INJURYTO YOUR HEALTH
IF VENTILATIONIS
INADEQUATEUSE AN
APPROVVED RESPIRATOR
HIGH PRESSURE KEEP
AWAYFROM LEAKS
BLEED DOWN BEFORE
REMOVING
LINES TO SERVICE
HIGHPRESSURE
BLEEDAIR PRESSURE
BEFORESERVICING
HIGHPRESSURE
BLEEDAIR PRESSURE
BEFORESERVICING
INSTALL LOCK
PIN PRIOR TO
TRANSPORTING MACHINE
12287-7
WARNING
BESURE SUPPLYLINES ARE SECURE
DONOT EXCEED 120 PS I (8.25 BARS)
ORDAMAGE TO MACHINE AND OR
BODILYHARM MAY RESULT
12287-1
FEED
PRESSURE
Recommended
Settings
4-7 PSI
Bio-RockDrill Oil 15W50
TM
MinnichMfg.Recommended Rock Drill Oil
PRIOR TO
OPERATION
Readand understand
ownersmanual
completely.
Tightenall loose bolts,
inspectall lines, pipes,
andhoses for damage.
Repairas necessary.
Drillsteel must not be
bindingin guide
bearing.Make sure
drillsteel is straight,
freeof obstructions,
andnot binding in any
way.
Fillthe oiler per
manual.
12287-156
PINCH
POINT
KEEP AWAY
PINCH
POINT
KEEP AWAY
PINCH
POINT
KEEP AWAY
PINCH
POINT
KEEP AWAY
PINCH
POINT
KEEP AWAY
PINCH
POINT
KEEP AWAY
WARNING
NOISEMAY
DAMAGEHEARING
WEARPROPER
HEARINGPROTECTION
FLYINGPARTICLES
MAYCAUSE
EYEINJURIES
WEARPROPER EYE
PROTECTION
DUSTCAN CAUSE
INJURYTO YOUR HEALTH
IFVENTILATION IS
INADEQUATEUSE AN
APPROVVEDRESPIRATOR
HIGHPRESSURE KEEP
AWAYFROM LEAKS
BLEEDDOWN BEFORE
REMOVING
LINESTO SERVICE
HIGHPRESSURE
BLEEDAIR PRESSURE
BEFORESERVICING
HIGHPRESSURE
BLEEDAIR PRESSURE
BEFORESERVICING
INSTALL LOCK
PIN PRIOR TO
TRANSPORTING MACHINE
12287-7
WARNING
BESURESUPPLY LINES ARE SECURE
DONOT EXCEED 120 PSI (8.25 BARS)
ORDAMAGE TO MACHINE ANDOR
BODILYHARMM AY RESULT
12287-1
FEED
PRESSURE
Recommended
Settings
4-7 PSI
Bio-RockDrill Oil 15W50
TM
MinnichMfg.Recommended Rock Drill Oil
PRIORTO
OPERATION
Readand understand ownersmanual completely. Tightenall loose bolts, inspectall lines, pipes, andhoses for damage. Repairas necessary. Drillsteel must not be bindingin guide bearing.Make sure drillsteel is straight, freeof obstructions, andnot binding in any way. Fillthe oiler per manual.
12287-156
PINCH
POINT
KEEP AWAY
PINCH
POINT
KEEP AWAY
PINCH
POINT
KEEP AWAY
PINCH
POINT
KEEP AWAY
PINCH
POINT
KEEP AWAY
PINCH
POINT
KEEP AWAY
WARNING
NOISEMAY
DAMAGEHEARING
WEARPROPER
HEARINGPROTECTION
FLYINGPARTICLES
MAYCAUSE
EYEINJURIES
WEARPROPER EYE
PROTECTION
DUSTCAN CAUSE
INJURYTO YOUR HEALTH
IFVENTILATION IS
INADEQUATEUSE AN
APPROVVEDRESPIRATOR
HIGHPRESSURE KEEP
AWAYFROMLEAKS
BLEEDDOWN BEFORE
REMOVING
LINESTO SERVICE
HIGHPRESSURE
BLEEDAIRPRESSURE
BEFORESERVICING
HIGHPRESSURE
BLEEDAIRPRESSURE
BEFORESERVICING
INSTALL LOCK
PIN PRIOR TO
TRANSPORTING MACHINE
12287-7
WARNING
BESURESUPPLYLINES ARE SECURE
DONOTEXCEED 120 PSI (8.25 BARS)
ORDAMAGETO MACHINE AND OR
BODILYHARMMAY RESULT
12287-1
FEED
PRESSURE
Recommended
Settings
4-7 PSI
Bio-RockDrill
Oil15W50
TM
MinnichMfg.RecommendedRock Drill Oil
PRIORTO
OPERATION
Readand understand ownersmanual completely. Tightenall loose bolts, inspectall lines, pipes, andhoses for damage. Repairas necessary. Drillsteel must not be bindingin guide bearing.Make sure drillsteel is straight, freeof obstructions, andnot binding in any way. Fillthe oiler per manual.
12287-156
PINCH
POINT
KEEP AWAY
PINCH
POINT
KEEP AWAY
PINCH
POINT
KEEP AWAY
PINCH
POINT
KEEP AWAY
PINCH
POINT
KEEP AWAY
PINCH
POINT
KEEP AWAY
WARNING
NOISEMAY
DAMAGEHEARING
WEARPROPER
HEARINGPROTECTION
FLYINGPARTICLES
MAYCAUSE
EYEINJURIES
WEARPROPER EYE
PROTECTION
DUSTCAN CAUSE
INJURYTO YOUR HEALTH
IFVENTILATION IS
INADEQUATEUSE AN
APPROVVEDRESPIRATOR
HIGHPRESSURE KEEP
AWAYFROMLEAKS
BLEEDDOWN BEFORE
REMOVING
LINESTO SERVICE
HIGHPRESSURE
BLEEDAIRPRESSURE
BEFORESERVICING
HIGHPRESSURE
BLEEDAIRPRESSURE
BEFORESERVICING
INSTALL LOCK
PIN PRIOR TO
TRANSPORTING MACHINE
12287-7
WARNING
BESURESUPPLYLINES ARE SECURE
DONOTEXCEED 120 PSI (8.25 BARS)
ORDAMAGETO MACHINE AND OR
BODILYHARMMAY RESULT
12287-1
FEED
PRESSURE
Recommended
Settings
4-7 PSI
Bio-RockDrill
Oil15W50
TM
MinnichMfg.RecommendedRock Drill Oil
PRIORTO
OPERATION
Readand understand
ownersmanual
completely.
Tightenall loose bolts,
inspectall lines, pipes,
andhoses for damage.
Repairas necessary.
Drillsteel must not be
bindingin guide
bearing.Make sure
drillsteel is straight,
freeof obstructions,
andnot binding in any
way.
Fillthe oiler per
manual.
12287-156
PINCH
POINT
KEEP AWAY
PINCH
POINT
KEEP AWAY
PINCH
POINT
KEEP AWAY
PINCH
POINT
KEEP AWAY
PINCH
POINT
KEEP AWAY
PINCH
POINT
KEEP AWAY
WARNING
NOISEMAY
DAMAGEHEARING
WEARPROPER
HEARINGPROTECTION
FLYINGPARTICLES
MAYCAUSE
EYEINJURIES
WEARPROPER EYE
PROTECTION
DUSTCAN CAUSE
INJURYTO YOUR HEALTH
IFVENTILATION IS
INADEQUATEUSE AN
APPROVVEDRESPIRATOR
HIGHPRESSURE KEEP
AWAYFROMLEAKS
BLEEDDOWN BEFORE
REMOVING
LINESTO SERVICE
HIGHPRESSURE
BLEEDAIRPRESSURE
BEFORESERVICING
HIGHPRESSURE
BLEEDAIRPRESSURE
BEFORESERVICING
INSTALL LOCK
PIN PRIOR TO
TRANSPORTING MACHINE
12287-7
WARNING
BESURESUPPLYLINES ARE SECURE
DONOTEXCEED 120 PSI (8.25 BARS)
ORDAMAGETO MACHINE AND OR
BODILYHARMMAY RESULT
12287-1
FEED
PRESSURE
Recommended
Settings
4-7 PSI
Bio-RockDrill Oil15W50
TM
MinnichMfg.RecommendedRock Drill Oil
PRIORTO
OPERATION
Readand understand
ownersmanual
completely.
Tightenall loose bolts,
inspectall lines, pipes,
andhoses for damage.
Repairas necessary.
Drillsteel must not be
bindingin guide
bearing.Make sure
drillsteel is straight,
freeof obstructions,
andnot binding in any
way.
Fillthe oiler per
manual.
12287-156
PINCH
POINT
KEEPAWAY
PINCH
POINT
KEEPAWAY
PINCH
POINT
KEEPAWAY
PINCH
POINT
KEEPAWAY
PINCH
POINT
KEEPAWAY
PINCH
POINT
KEEPAWAY
WARNING
NOISEMAY
DAMAGEHEARING
WEARPROPER
HEARINGPROTECTION
FLYINGPARTICLES
MAYCAUSE
EYEINJURIES
WEARPROPEREYE
PROTECTION
DUSTCANCAUSE
INJURYTOYOUR HEALTH
IFVENTILATIONIS
INADEQUATEUSEAN
APPROVVEDRESPIRATOR
HIGHPRESSUREKEEP
AWAYFROMLEAKS
BLEEDDOWNBEFORE
REMOVING
LINESTOSERVICE
HIGHPRESSURE
BLEEDAIRPRESSURE
BEFORESERVICING
HIGHPRESSURE
BLEEDAIRPRESSURE
BEFORESERVICING
INSTALLLOCK
PINPRIOR TO
TRANSPORTINGMACHINE
12287-7
WARNING
BESURESUPPLYLINESARE SECURE
DONOTEXCEED120 PSI (8.25 BARS)
ORDAMAGETOMACHINE AND OR
BODILYHARMMAYRESULT
12287-1
FEED
PRESSURE
Recommended
Settings
4-7PSI
Bio-RockDrill Oil15W50
TM
MinnichMfg.RecommendedRockDrill Oil
A
M
F
J
K
L
B
B
C
D
C H
GN
I
PRIORTO
OPERATION
Readandunderstand
ownersmanual
completely.
Tightenallloose bolts,
inspectalllines, pipes,
andhosesfor damage.
Repairasnecessary.
Drillsteelmust not be
bindinginguide
bearing.Makesure
drillsteelis straight,
freeofobstructions,
andnotbinding in any
way.
Filltheoiler per
manual.
12287-156
PINCH
POINT
KEEPAWAY
PINCH
POINT
KEEPAWAY
PINCH
POINT
KEEPAWAY
PINCH
POINT
KEEPAWAY
PINCH
POINT
KEEPAWAY
PINCH
POINT
KEEPAWAY
WARNING
NOISEMAY
DAMAGEHEARING
WEARPROPER
HEARINGPROTECTION
FLYINGPARTICLES
MAYCAUSE
EYEINJURIES
WEARPROPEREYE
PROTECTION
DUSTCANCAUSE
INJURYTOYOUR HEALTH
IFVENTILATIONIS
INADEQUATEUSEAN
APPROVVEDRESPIRATOR
HIGHPRESSUREKEEP
AWAYFROMLEAKS
BLEEDDOWNBEFORE
REMOVING
LINESTOSERVICE
HIGHPRESSURE
BLEEDAIRPRESSURE
BEFORESERVICING
HIGHPRESSURE
BLEEDAIRPRESSURE
BEFORESERVICING
INSTALLLOCK
PINPRIOR TO
TRANSPORTINGMACHINE
12287-7
WARNING
BESURESUPPLYLINESARESECURE
DONOTEXCEED120PSI (8.25 BARS)
ORDAMAGETOMACHINEAND OR
BODILYHARMMAYRESULT
12287-1
FEED
PRESSURE
Recommended
Settings
4-7PSI
Bio-RockDrill Oil15W50
TM
MinnichMfg.RecommendedRockDrillOil

Dowel Drill Manual 12
CONTROL & GAUGES
INSTALLATION
Shut off air pressure. Install in air line with air
ow in direction of arrow on body.
RECOMMENDED SETTINGS
Regulator should read approximately between 4
and 7 PSI. Some adjustment may be necessary.
ADJUSTMENT
Turn adjustment screw clockwise to increase
outlet pressure setting and counterclockwise
to decrease outlet pressure setting. To reduce
pres-sure, rst reduce to a pressure less than
that desired, then increase to the desired outlet
pressure.
These products are intended for use in indus-
trial compressed air systems only. Do not use
these products where pressures and tempera-
tures can exceed those listed on the product
label.
LUBRICATOR IS SET AT 4.5 FROM FACTORY. DIFFERENT TEMPERATURES MAY AFFECT FLOW OR OIL.
YOU MIGHT HAVE TO ADJUST LUBRICATOR ACCORDINGLY. BE SURE LUBRICATOR IS SET SO THAT YOU
ALWAYS HAVE A LIGHT FILM OF OIL ON EXHAUST DEFLECTOR.
TO ADJUST LUBRICATOR, DISCONNECT AIR PRESSURE FROM DRILL UNIT. PUSH DOWN ON PRESSURE
RELIEVING BUTTON ON FILL CAP. REMOVE FILL CAP. USING A SCREW DRIVER, ADJUST LUBRICATOR
TO REQUIRED SETTING. TO INCREASE OIL, SET AT HIGHER NUMBER. TO DECREASE OIL, SET AT LOWER
NUMBER.
Adjust Lubricator Here
Air Supply
Always disconnect the air supply before
changing steel or dismantling the tool for ser-
vice or repair. For maximum safety we advise
the installation of a shut-off valve at the end
of the air line.

13
Dowel Drill Manual
RECOMMENDED LUBRICANTS
Be sure lubricator is full. See recommended oils below.
Make sure slab wheels are square against face of slab.
Using feed control valve, feed bit against slab.
Using drill control valve, turn drill on and drill until the
drill slider is against the stop clamp, which should be
set for the required depth of hole.
Once drill slider is against the stop clamp, leave the
drill on and use the feed control valve to retract the
drill from the hole. Note: If bit will not retract from hole,
feed drill back into hole and retract drill again.
Step 1
Step 2
Step 3
Step 4
Step 5
DO NOT hit drill slider to retract the bit from
the hole. This will damage the drill slider.

Dowel Drill Manual 14
Troubleshooting Air Drill
Cause Remedy
DRILL NOT GETTING AIR 1. On Multi Drill units, switch airline with drill
that is working properly. If drill now runs
check the air control valve. If the valve works,
check the drill.
2. Check clave on air compressor and drill unit
to be certain they are completely open
3. Check compressor. It should have 100SCFM
(47.20m^3/sec.) per drill and 110PSI (7.6 BAR)
at drill manifold when drilling with large drills.
4. Make certain all ttings are connected prop-
erly and not leaking.
COUPLING OR HOSE OBSTRUCTION Remove Obstruction
FAILURE IN THE ELECTRICAL CIRCUIT Check switches, connections, coils, ground &
voltage. If the power unit (backhoes, grader,
ETC.) is being jump started, check the AMPS &
voltage being jump supplied to coils from the
battery, it may be too low.
FAILURE OF DRILL SOLENOID VALUE
(MULTI DRILL UNITS WITH REMOTE
ELECTRICAL CONTROLS)
Check valve - you should be able to feel the so-
lenoid move when it is actuated. Make sure you
have current to the solenoid coil. Replace the
dolenoid if there is no movement.
MECHANICAL FAILURE OF DRILL Disassemble the drill & inspect for damaged
parts.
PROBLEM: DRILL DOES NOT RUN

15
Dowel Drill Manual
Troubleshooting Air Drill
Cause Remedy
NOT ENOUGH AIR REACHING
DRILL. IT SHOULD HAVE 100SCFM
(47. 2 D M^3/sec.) PER DRILL AND 110
PSI (7.6 bar)
On Multi Drill units. Turn off one or two drills. If
the remaining drills pick up speed, check the air
compressor.
RESTRICTION IN AIR LINE A foreign object in the air line or possibly a
reduction in the air line caused by a reducer
tting.
TOO SMALL AIR LINE Following are supply line sizes for drilling:
A-1 Single Drill 3/4” (19mm)
A-2 Two Drills 1-1/4” (38.75mm)
A-3& A-4 Three & four drills 1-1/2” (38.1mm)
A-5 Five Drills 2” (50.8mm)
AIR PRESSURE TO CYLINDER “FEED-
ING” DRILL INTO CONCRETE NOT
ADJUSTED PROPERLY
Excessive pressure can cause drill to “bind up”
in the hole. Pressure that is too low will not
“feed” the drill into the concrete. The air pres-
sure required varies with the drill model.
Horizontal- all units with large drills use 22-26
PSI (1.5-1.8 bar). Drill units using the 15LB (6.8kg)
class drill will use 16-20 PSI (1.1-1.4 Bar).
Vertical - all drill units use 5-6 PSI (0.34-0.41
Bar). With the correct air pressure, the drill steel
should have a slight rattle.
INSUFFICIENT AIR FLOW TO KEEP
HOLE BLOWN CLEAN
Check for obstruction in the blow tube in the
drill.
LUBRICATOR PUTTING OUT TOO
MUCH OIL TO DRILL
If you notice more than a light lm of oil on the
air deector on the bottom of the drill adjust the
lubricator, make certain you are using the type of
oil called for in the operation and maintenance
manual.
MECHANICAL BLINDING OF DRILL
CARRIER
Make sure the eight bearing pads are adjusted
correctly. The square tube that the drill carrier
slides on must be free of rust so that the carrier
slides freely, drill steel must not be binding in
the guide bearing.
BENT DRILL STEEL, WORN DRILL BIT
OR DRILLING INTO REBAR
Replace the drill steel or bit. If drilling into rebar,
move the drill.
USING 3 1/4” (8.25cm) SHANK DRILL
STEEL IN 4 1/4” (10.8cm)SHANK
CHUCK DRILL
The drill steel will rotate but it will not allow the
drill piston to hammer properly, replace it with
the correct 4 1/4” (10.8cm) drill steel.
PROBLEM: DRILL RUNS SLOW OR DOES NOT DRILL EFFECTIVELY

Dowel Drill Manual 16
PARTS MANUAL (30# HAMMER)

17
Dowel Drill Manual
PARTS MANUAL (30# HAMMER)

Dowel Drill Manual 18
PARTS MANUAL (50# HAMMER)

19
Dowel Drill Manual
PARTS MANUAL (50# HAMMER)

Dowel Drill Manual 20
HAMMER BOM (30#)
30# (13.2kg) Rock Drill
A1110 4-00100