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SK47
HYDRAULIC SINKER DRILL
Read the Manual Wear your PPE
SAFETY, OPERATION AND MAINTENANCE
USER MANUAL
Copyright© 2009 The Stanley Works
10323 5-2010 ver 3
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TABLE OF CONTENTS
SAFETY SYMBOLS .........................................................................................................................................................4
SAFETY PRECAUTIONS .................................................................................................................................................5
TOOL STICKERS & TAGS ...............................................................................................................................................6
HYDRAULIC HOSE REQUIREMENTS ............................................................................................................................7
HTMA REQUIREMENTS ..................................................................................................................................................9
OPERATION ...................................................................................................................................................................10
COLD WEATHER OPERATION ..................................................................................................................................... 11
OPERATION ................................................................................................................................................................... 11
EQUIPMENT PROTECTION & CARE ........................................................................................................................... 12
TROUBLESHOOTING ...................................................................................................................................................13
CHARGING THE ACCUMULATOR ................................................................................................................................14
ACCUMULA T OR TESTING PROCEDURE ...................................................................................................................14
ACCUMULATOR CHARGING ........................................................................................................................................14
SPECIFICATIONS ..........................................................................................................................................................16
ACCESSORIES..............................................................................................................................................................16
SERVICE TOOLS ........................................................................................................................................................... 16
SK47 PARTS ILLUSTRATION........................................................................................................................................17
SK47 PARTS LIST..........................................................................................................................................................18
WARRANTY ...................................................................................................................... .............................................20
SERVICING THE STANLEY HYDRAULIC SINKER DRILL. This manual contains safety, operation, and
routine maintenance instructions. Stanley Hydraulic Tools recommends that servicing of hydraulic tools,
other than routine maintenance, must be performed by an authorized and certifi ed dealer. Please read
the following warning.
SERIOUS INJURY OR DEATH COULD RESULT FROM THE
IMPROPER REPAIR OR SERVICE OF THIS TOOL.
REPAIRS AND / OR SERVICE TO THIS TOOL MUST ONLY BE
DONE BY AN AUTHORIZED AND CERTIFIED DEALER.
WARNING
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DANGER
SAFETY SYMBOLS
Safety symbols and signal words, as shown below, are used to emphasize all operator, maintenance and repair
actions which, if not strictly followed, could result in a life-threatening situation, bodily injury or damage to equipment.
This is the safety alert symbol. It is used to alert you to potential personal
injury hazards. Obey all safety messages that follow this symbol to avoid
possible injury or death.
This safety alert and signal word indicate an imminently hazardous situation which, if not avoided, will result in death or serious injury.
This safety alert and signal word indicate a potentially hazardous situation
WARNING
CAUTION
which, if not avoided, could result in death or serious injury.
This safety alert and signal word indicate a potentially hazardous situation
which, if not avoided, may result in minor or moderate injury.
This signal word indicates a potentially hazardous situation which, if not
CAUTION
NOTICE
IMPORTANT
Always observe safety symbols. They are included for your safety and for the protection of the tool.
avoided, may result in property damage.
This signal word indicates a situation which, if not avoided, will result in
damage to the equipment.
This signal word indicates a situation which, if not avoided, may result in
damage to the equipment.
LOCAL SAFETY REGULATIONS
Enter any local safety regulations here. Keep these instructions in an area accessible to the operator and maintenance personnel.
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Page 5
SAFETY PRECAUTIONS
Tool operators and maintenance personnel must always comply with the safety precautions given in this manual and on the
stickers and tags attached to the tool and hose.
These safety precautions are given for your safety. Review them carefully before operating the tool and before performing
general maintenance or repairs.
The SK47 Hydraulic Sinker Drill will provide safe and dependable service if operated in accordance with the instructions
given in this manual. Read and understand this manual and any stickers and tags attached to the tool and hoses before
operation. Failure to do so could result in personal injury or equipment damage.
• Operator must start in a work area without bystanders. The operator must be familiar with all prohibited work areas such
as excessive slopes and dangerous terrain conditions.
• Establish a training program for all operators to ensure safe operation.
• Do not operate the tool unless thoroughly trained or under the supervision of an instructor.
• Alway wear safety equipment such as goggles, ear, head and breathing protection, and safety shoes at all times when
operating the tool.
• Do not inspect or clean the tool while the hydraulic power source is connected. Accidental engagement of the tool can
cause serious injury.
• Supply hoses must have a minimum working pressure rating of 2500 psi/175 bar.
• The hydraulic circuit control valve must be in the “OFF” position when coupling or uncoupling the tool. Wipe all couplers
clean before connecting. Use only lint-free cloths. Failure to do so may result in damage to the quick couplers and cause
overheating of the hydraulic system.
• Do not operate the tool at oil temperatures above 140°F/60°C. Operation at higher oil temperatures can cause operator
discomfort and may damage the tool.
• Do not operate a damaged, improperly adjusted, or incompletely assembled tool.
• Do not weld, cut with an acetylene torch, or hardface the tool bit.
• To avoid personal injury or equipment damage, all tool repair, maintenance and service must only be performed by
authorized and properly trained personnel.
• Do not exceed the rated limits of the tool or use the tool for applications beyond its design capacity.
• Always keep critical tool markings, such as labels and warning stickers legible.
• Always replace parts with replacement parts recommended by Stanley Hydraulic Tools.
• Check fastener tightness often and before each use daily.
• Never operate the tool if you cannot be sure that underground utilities are not present.
• Do not wear loose fi tting clothing when operating the tool.
Exposure to crystalline Silica (sometimes called “silica dust”) as a result of
cutting, breaking, drilling, or hammering of rock, concrete, asphalt or other
materials may cause Silicosis (a serious lung disease), silicosis-related illnesses, cancer, or death.
Respiratory protection is highly recommended when working with materials
containing Silica Dust.
Always wear a respirator approved for protection against crystalline silica.
WARNING
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TOOL STICKERS & TAGS
For location of stickers, please refer to the parts illustration.
08103
SK47 Name Tag
The safety tag (p/n
15875) at right is attached
to the tool when shipped
from the factory. Read
and understand the safety
instructions listed on this
tag before removal. We
suggest you retain this tag
and attach it to the tool
when not in use.
DANGER
1. FAILURE TO USE HYDRAULIC HOSE LABELED AND CERTIFIED
AS NON-CONDUCTIVE WHEN USING HYDRAULIC TOOLS
ON OR NEAR ELECTRICAL LINES MAY RESULT IN DEATH
OR SERIOUS INJURY.
BEFORE USING HOSE LABELED AND CERTIFIED AS NON-
CONDUCTIVE ON OR NEAR ELECTRIC LINES BE SURE THE
HOSE IS MAINTAINED AS NON-CONDUCTIVE. THE HOSE
SHOULD BE REGULARLY TESTED FOR ELECTRIC CURRENT
LEAKAGE IN ACCORDANCE WITH YOUR SAFETY DEPARTMENT INSTRUCTIONS.
2. A HYDRAULIC LEAK OR BURST MAY CAUSE OIL INJECTION
INTO THE BODY OR CAUSE OTHER SEVERE PERSONAL
INJURY.
A DO NOT EXCEED SPECIFIED FLOW AND PRESSURE FOR
THIS TOOL. EXCESS FLOW OR PRESSURE MAY CAUSE A
LEAK OR BURST.
B DO NOT EXCEED RATED WORKING PRESSURE OF HY-
DRAU LIC HOSE USED WITH THIS
TOOL. EXCESS PRESSURE MAY
CAUSE A LEAK OR BURST.
C CHECK TOOL HOSE COUPLERS AND CONNECTORS DAILY
FOR LEAKS. DO NOT FEEL FOR LEAKS WITH YOUR
IMPORTANT
READ OPERATION MANUAL AND
SAFETY INSTRUCTIONS FOR THIS
TOOL BEFORE USING IT.
USE ONLY PARTS AND REPAIR
PROCEDURES APPROVED BY
STANLEY AND DESCRIBED IN THE OPERA-
SAFETY TAG P/N 15875
TION MANUAL.
TAG TO BE REMOVED ONLY BY
TOOL OPERATOR.
SEE OTHER SIDE
(shown smaller then actual size)
DANGER
D DO NOT LIFT OR CARRY TOOL BY THE HOSES. DO
NOT ABUSE HOSE. DO NOT USE KINKED, TORN OR
DAMAGED HOSE.
3. MAKE SURE HYDRAULIC HOSES ARE PROPERLY CONNECTED
TO THE TOOL BEFORE PRESSURING SYSTEM. SYSTEM
PRESSURE HOSE MUST ALWAYS BE CONNECTED TO TOOL
“IN” PORT. SYSTEM RETURN HOSE MUST ALWAYS BE
CONNECTED TO TOOL “OUT” PORT. REVERSING CONNECTIONS MAY CAUSE REVERSE TOOL OPERATION WHICH CAN
RESULT IN SEVERE PERSONAL INJURY.
4. DO NOT CONNECT OPEN-CENTER TOOLS TO CLOSED-CENTER HYDRAULIC SYSTEMS. THIS MAY RESULT IN LOSS OF
OTHER HYDRAULIC FUNCTIONS POWERED BY THE SAME
SYSTEM AND/OR SEVERE PERSONAL INJURY.
5. BYSTANDERS MAY BE INJURED IN YOUR WORK AREA. KEEP
BYSTANDERS CLEAR OF YOUR WORK AREA.
6. WEAR HEARING, EYE, FOOT, HAND AND HEAD PROTECTION.
7. TO AVOID PERSONAL INJURY OR EQUIPMENT DAMAGE, ALL
TOOL REPAIR MAINTENANCE AND SERVICE MUST ONLY BE
PERFORMED BY AUTHORIZED AND PROPERLY TRAINED
PERSONNEL.
IMPORTANT
READ OPERATION MANUAL AND
SAFETY INSTRUCTIONS FOR THIS
TOOL BEFORE USING IT.
USE ONLY PARTS AND REPAIR
PROCEDURES APPROVED BY
STANLEY AND DESCRIBED IN THE OPERA-
TION MANUAL.
TAG TO BE REMOVED ONLY BY
TOOL OPERATOR.
SEE OTHER SIDE
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HYDRAULIC HOSE REQUIREMENTS
HOSE TYPES
The rated working pressure of the hydraulic hose must be equal to or higher than the relief valve setting on the
hydraulic system. There are three types of hydraulic hose that meet this requirement and are authorized for use
with Stanley Hydraulic Tools. They are:
Certifi ed non-conductive - constructed of thermoplastic or synthetic rubber inner tube, synthetic fi ber
braid reinforcement, and weather resistant thermoplastic or synthetic rubber cover. Hose labeled certifi ed non-
conductive is the only hose authorized for use near electrical conductors.
Wire-braided (conductive) - constructed of synthetic rubber inner tube, single or double wire braid reinforcement, and weather resistant synthetic rubber cover. This hose is conductive and must never be used near
electrical conductors.
Fabric-braided (not certifi ed or labeled non-conductive) - constructed of thermoplastic or synthetic rubber
inner tube, synthetic fi ber braid reinforcement, and weather resistant thermoplastic or synthetic rubber cover. This
hose is not certifi ed non-conductive and must never be used near electrical conductors.
HOSE SAFETY TAGS
To help ensure your safety, the following DANGER tags are attached to all hose purchased from Stanley Hydraulic Tools. DO NOT REMOVE THESE TAGS.
If the information on a tag is illegible because of wear or damage, replace the tag immediately. A new tag may be
obtained from your Stanley Distributor.
THE TAG SHOWN BELOW IS ATTACHED TO “CERTIFIED NON-CONDUCTIVE” HOSE
D A N G E R
1 FAILURE TO USE HYDRAULIC HOSE LABELED AND CERTIFIED AS NON-CONDUCTIVE
WHEN USING HYDRAULIC TOOLS ON OR NEAR ELECTRIC LINES MAY RESULT IN DEATH
OR SERIOUS INJURY.
FOR PROPER AND SAFE OPERATION MAKE SURE THAT YOU HAVE BEEN PROPERLY
TRAINED IN CORRECT PROCEDURES REQUIRED FOR WORK ON OR AROUND
ELECTRIC LINES.
2. BEFORE USING HYDRAULIC HOSE LABELED AND CERTIFIED AS NON-CONDUCTIVE ON
OR NEAR ELECTRIC LINES. WIPE THE ENTIRE LENGTH OF THE HOSE AND FITTING
WITH A CLEAN DRY ABSORBENT CLOTH TO REMOVE DIRT AND MOISTURE AND TEST
HOSE FOR MAXIMUM ALLOWABLE CURRENT LEAKAGE IN ACCORDANCE WITH SAFETY
DEPARTMENT INSTRUCTIONS.
DO NOT REMOVE THIS TAG
SIDE 1 SIDE 2
3
(shown smaller than actual size)
3. DO NOT EXCEED HOSE WORKING PRESSURE OR ABUSE HOSE. IMPROPER USE OR
HANDLING OF HOSE COULD RESULT IN BURST OR OTHER HOSE FAILURE. KEEP
HOSE AS FAR AWAY AS POSSIBLE FROM BODY AND DO NOT PERMIT DIRECT CONTACT
DURING USE. CONTACT AT THE BURST CAN CAUSE BODILY INJECTION AND SEVERE
PERSONAL INJURY.
4. HANDLE AND ROUTE HOSE CAREFULLY TO AVOID KINKING, ABRASION, CUTTING, OR
CONTACT WITH HIGH TEMPERATURE SURFACES. DO NOT USE IF KINKED. DO NOT USE
HOSE TO PULL OR LIFT TOOLS, POWER UNITS, ETC.
5. CHECK ENTIRE HOSE FOR CUTS CRACKS LEAKS ABRASIONS, BULGES, OR DAMAGE TO
COUPLINGS IF ANY OF THESE CONDITIONS EXIST, REPLACE THE HOSE IMMEDIATELY.
NEVER USE TAPE OR ANY DEVICE TO ATTEMPT TO MEND THE HOSE.
6. AFTER EACH USE STORE IN A CLEAN DRY AREA.
D A N G E R
DO NOT REMOVE THIS TAG
THE TAG SHOWN BELOW IS ATTACHED TO “CONDUCTIVE” HOSE.
D A N G E R
1 DO NOT USE THIS HYDRAULIC HOSE ON OR NEAR ELECTRIC LINES. THIS HOSE IS
NOT LABELED OR CERTIFIED AS NON-CONDUCTIVE. USING THIS HOSE ON OR NEAR
ELECTRICAL LINES MAY RESULT IN DEATH OR SERIOUS INJURY.
2. FOR PROPER AND SAFE OPERATION MAKE SURE THAT YOU HAVE BEEN PROPERLY
TRAINED IN CORRECT PROCEDURES REQUIRED FOR WORK ON OR AROUND
ELECTRIC LINES.
3. DO NOT EXCEED HOSE WORKING PRESSURE OR ABUSE HOSE. IMPROPER USE OR
HANDLING OF HOSE COULD RESULT IN BURST OR OTHER HOSE FAILURE. KEEP
HOSE AS FAR AWAY AS POSSIBLE FROM BODY AND DO NOT PERMIT DIRECT CONTACT
DURING USE. CONTACT AT THE BURST CAN CAUSE BODILY INJECTION AND SEVERE
PERSONAL INJURY.
4. HANDLE AND ROUTE HOSE CAREFULLY TO AVOID KINKING, CUTTING, OR CONTACT
WITH HIGH TEMPERATURE SURFACES. DO NOT USE IF KINKED. DO NOT USE HOSE TO
PULL OR LIFT TOOLS, POWER UNITS, ETC.
DO NOT REMOVE THIS TAG
SIDE 1 SIDE 2
5. CHECK ENTIRE HOSE FOR CUTS CRACKS LEAKS ABRASIONS, BULGES, OR DAMAGE TO
COUPLINGS IF ANY OF THESE CONDITIONS EXIST, REPLACE THE HOSE IMMEDIATELY.
NEVER USE TAPE OR ANY DEVICE TO ATTEMPT TO MEND THE HOSE.
6. AFTER EACH USE STORE IN A CLEAN DRY AREA.
D A N G E R
SEE OTHER SIDE
(shown smaller than actual size)
DO NOT REMOVE THIS TAG
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Min. Working Pressure
USE
Press/Return)
(
Certifi ed Non-Conductive Hose - Fiber Braid - for Utility Bucket Trucks
Oil Flow Hose Lengths Inside Diameter
GPM LPM FEET METERS INCH MM PSI BAR
4-9 15-34 up to 10 up to 3 3/8 10 Both 2250 155
Conductive Hose - Wire Braid or Fiber Braid -DO NOT USE NEAR ELECTRICAL CONDUCTORS
4-6 15-23 up to 25 up to 7.5 3/8 10 Both 2500 175
4-6 15-23 26-100 7.5-30 1/2 13 Both 2500 175
5-10.5 19-40 up to 50 up to 15 1/2 13 Both 2500 175
5-10.5 19-40 51-100 15-30 5/8 16 Both 2500 175
5/8 16 Pressure 2500 175
3/4 19 Return 2500 175
5-10.5 19-40 100-300 30-90
10-13 38-49 up to 50 up to 15 5/8 16 Both 2500 175
5/8 16 Pressure 2500 175
3/4 19 Return 2500 175
10-13 38-49 51-100 15-30
3/4 19 Pressure 2500 175
1 25.4 Return 2500 175
10-13 38-49 100-200 30-60
5/8 16 Pressure 2500 175
13-16 49-60 up to 25 up to 8
3/4 19 Return 2500 175
3/4 19 Pressure 2500 175
1 25.4 Return 2500 175
13-16 49-60 26-100 8-30
PRESSURE
<<< FLOW
RETURN
FLOW >>>
Typical Hose Connections
Tool to Hydraulic Circuit Hose Recom-
mendations
The chart to the right shows recommended mini-
mum hose diameters for various hose lengths
based on gallons per minute (gpm)/liters per min-
ute (lpm). These recommendations are intended
to keep return line pressure (back pressure) to a
minimum acceptable level to ensure maximum tool
performance.
This chart is intended to be used for hydraulic tool
applications only based on Stanley Hydraulic Tools
tool operating requirements and should not be used
for any other applications.
All hydraulic hose must have at least a rated
minimum working pressure equal to the maximum
hydraulic system relief valve setting.
All hydraulic hose must meet or exceed specifi -
cations as set forth by SAE J517.
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HTMA REQUIREMENTS
TOOL CATEGORY
HYDRAULIC SYSTEM
REQUIREMENTS TYPE 1 TYPE II TYPE III TYPE RR
FLOW RATE
TOOL OPERATING PRESSURE
(at the power supply outlet)
SYSTEM RELIEF VALVE SETTING
(at the power supply outlet)
MAXIMUM BACK PRESSURE
(at tool end of the return hose)
Measured at a max. fl uid viscosity of:
(at min. operating temperature)
TEMPERATURE
Suffi cient heat rejection capacity
to limit max. fl uid temperature to:
(at max. expected ambient temperature)
Min. cooling capacity
at a temperature difference of
between ambient and fl uid temps
NOTE:
Do not operate the tool at oil temperatures above 140° F (60° C). Operation at higher temperatures can cause operator
discomfort at the tool.
4-6 gpm 7-9 gpm 11-13 gpm 9-10.5 gpm
(15-23 lpm) (26-34 lpm) (42-49 lpm) (34-40 lpm)
2000 psi 2000 psi 2000 psi 2000 psi
(138 bar) (138 bar) (138 bar) (138 bar)
2100-2250 psi 2100-2250 psi 2100-2250 psi 2200-2300 psi
(145-155 bar) (145-155 bar) (145-155 bar) (152-159 bar)
250 psi 250 psi 250 psi 250 psi
(17 bar) (17 bar) (17 bar) (17 bar)
400 ssu* 400 ssu* 400 ssu* 400 ssu*
(82 centistokes) (82 centistokes) (82 centistokes) (82 centistokes)
140° F 140° F 140° F 140° F
(60° C) (60° C) (60° C) (60° C)
3 hp 5 hp 7 hp 6 hp
(2.24 kW) (3.73 kW) (4.47 kW) (5.22 kW)
40° F 40° F 40° F 40° F
(22° C) (22° C) (22° C) (22° C)
FILTER
Min. full-fl ow fi ltration
Sized for fl ow of at least:
(For cold temp. startup and max. dirt-holding capacity)
HYDRAULIC FLUID
Petroleum based
(premium grade, anti-wear, non-conductive)
VISCOSITY
(at min. and max. operating temps)
NOTE:
When choosing hydraulic fl uid, the expected oil temperature extremes that will be experienced in service determine the
most suitable temperature viscosity characteristics. Hydraulic fl uids with a viscosity index over 140 will meet the require-
ments over a wide range of operating temperatures.
*SSU = Saybolt Seconds Universal
NOTE:
These are general hydraulic system requirements. See tool Specifi cation page for tool specifi c requirements.
25 microns 25 microns 25 microns 25 microns
30 gpm 30 gpm 30 gpm 30 gpm
(114 lpm) (114 lpm) (114 lpm) (114 lpm)
100-400 ssu* 100-400 ssu* 100-400 ssu* 100-400 ssu*
(20-82 centistokes)
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OPERATION
The recommended hose size is .500 inch/12 mm I.D. up to
50 ft/15 m long and .625 inch/16 mm I.D. minimum up to 100
ft/30 m.
PRE-OPERATION PROCEDURES
CHECK POWER SOURCE
1. Using a calibrated fl owmeter and pressure gauge, check
that the hydraulic power source develops a fl ow of 7-9 gpm/26-
34 lpm at 1500-2000 psi/105-140 bar.
2. Make certain the hydraulic power source is equipped
with a relief valve set to open at 2100-2250 psi/145-155 bar
maximum.
INSTALL DRILL STEEL & ROCK BIT
Use standard 4-1/4 inch shank x 7/8 inch hex drill steels.
Drill steels are available in a variety of lengths. Start with a
short length so that the tool may be operated at a normal
standing position. The tool handles should never exceed chest
height during operation.
1. Thread a rock bit onto the drill steel.
within the hoses may make them diffi cult to connect.
When possible, connect the free ends of the hoses
together.
4. Connect the hose from the air supply to the hose on the
tool.
NOTICE
The air supply must be minimum 30 cfm at 120 psi.
Supplying less than these specifi cations may result in
inadequate extraction of rock cuttings; cause cuttings to
migrate up the drill steel and into the tool and result in
tool damage; diminish drilling time; and cause premature
wear of the drill bit.
OPERATION PROCEDURES
1. Observe all safety precautions.
2. Install the appropriate tool bit for the job.
3. Start the hydraulic supply and turn the circuit control valve
to the ON position.
2. Rotate the latch out and up.
3. Slide the drill steel into the tool.
4. Rotate the latch down being careful not to pinch your
fi ngers. When correctly installed, the collar on the drill steel
should be above the bottom of the latch.
CONNECT HOSES
1. Wipe all hose couplers with a clean, lint-free cloth before
making connections.
2. Connect the hoses from the hydraulic power source to the
tool fi ttings or quick disconnects. It is a good practice to con-
nect return hoses fi rst and disconnect them last to minimize
or avoid trapped pressure within the tool.
3. Observe fl ow indicators stamped on hose couplers to
ensure that fl uid fl ow is in the proper direction. The female
coupler on the tool hose is the inlet coupler.
4. Move the hydraulic circuit control valve to the ON position
to operate the tool.
NOTE:
If uncoupled hoses are left in the sun, pressure increase
4. Open the air valve on the tool just enough to permit a small
amount of air fl ow from the tool bit.
NOTE:
Air fl ow must be continuous during drilling to avoid clog-
ging of the air passages and/or back-fl ushing of waste
products into the drill.
4. Place the bit fi rmly on the surface to be drilled. Do not op-
erate the sinker drill without the drill steel in contact with the
work surface. Adequate down pressure is very important.
5. Several methods can be used to reduce the tendency for
the drill to “walk” on the surface to be drilled before the hole
is initiated.
If the trigger is partially depressed, the piston will cycle at
low speed, without tool bit rotation, allowing a start hole to
be made. This will keep the drill in place when full power is
applied.
Rotating the motor control lever straight up will shut off all
rotation allowing the operator to establish a starting hole prior
to full application.
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Page 11
OPERATION
6. The rotation control lever controls rotation speed from 0 to
approximately 300 rpm. Normal drilling is best accomplished
with the lever halfway between fully on and straight up off
position.
Note: Normal drill rotation is counterclockwise when viewed
from the top of the tool. The clockwise rotation position of the
motor control lever has been blocked with a roll pin stop to
avoid unscrewing a drill bit at the bottom of the drilled hole.
7. Ensure the rock bit is rotating at a moderate speed (not too
fast, not too slow). When starting the hole, it is best to start at
a slow impact and rotation speed until the rock bit has carved
out a depression in the material being drilled. If the rock bit is
not rotating open the hydraulic valve lever further. If the rock
bit still does not rotate adjust the motor control knob until
rotation is achieved.
COLD WEATHER OPERATION
If the breaker is to be used during cold weather, preheat the
hydraulic fl uid at low engine speed. When using the normally
recommended fl uid, fl uid temperature should be at or above
50° F/10° C (400 ssu/82 centistokes) before use.
Damage to the hydraulic system or breaker can result from
use with fl uid that is too viscous or thick.
FLUSHING REQUIREMENTS
8. After the rock bit has carved out a depression in the material being drilled, open the hydraulic valve lever fully . Readjust
the motor control knob to obtain a good drilling speed. Adjust
the air valve to ensure the cuttings are being extracted from
the drill hole.
9. Keep the drill steel centered in the hole.
10. Insuffi cient air fl ow can cause the drill steel to bind in the
hole.
1 1. Apply adequate feed pressure to the sinker drill to maintain
optimum drilling performance.
12. When drilling deep holes, it is advantageous to stop drilling
every 1 to 2 minutes. This allows the receiver and hoses to
charge and provide a short burst of air when the tool is again
turned on to clear excess cutting from the hole.
13. When the bottom of the tool comes within 6 inches of the
drill hole, it is time to either add another section of drill steel
or replace the existing drill steel with a longer section. Close
the hydraulic valve lever but leave the air valve "ON" and then
lift the tool with drill steel and rock bit out of the hole. Leaving
the air valve "ON" helps prevent cuttings from falling around
the bit while the bit is lifted from the hole.
• The SK47 is designed for air fl ushing only .
• The minimum of CFM/7 liters per second at 75 psi/5 bar of
compressed air should be used for fl ushing the chips out of
the drilled hole.
• The minimum recommended hose size is 3/8-inch/10 mm
I.D. and must have a minimum working pressure rating of
150 psi/10 bar or 150 percent of the maximum pressure
produced by the system, whichever is higher.
• Air hoses must have an oil-resistant inner surface and an
abrasion-resistant exterior surface. When severe operating
conditions make the possibility of cutting or damaging the
hose likely, the hose shall be of extraply armored, or other
protective construction.
• Pressure regulators shall be used to limit maximum air
pressure at the tool to 100 psi/7 bar.
• An accessible means for shutting off the air supply to the
sinker drill should be provided.
• Automatic fi ltering systems are recommended.
14. When the tool, drill steel and bit have been removed from
the drill hole, turn the valve lever "OFF" and turn the hydraulic
supply circuit control valve "OFF" before changing the drill
steel or rock bit.
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Page 12
NOTICE
EQUIPMENT PROTECTION & CARE
In addition to the Safety
Precautions found in this
manual, observe the
following for equipment
protection and care.
• Make sure all couplers are wiped clean before connection.
• The hydraulic circuit control valve must be in the “OFF” position when coupling or uncoupling
hydraulic tools. Failure to do so may result in damage to the quick couples and cause overheating
of the hydraulic system.
• Always store the tool in a clean dry space, safe from damage or pilferage.
• Make sure the circuit PRESSURE hose (with male quick disconnect) is connected to the “IN” port.
The circuit RETURN hose (with female quick disconnect) is connected to the opposite port. Do not
reverse circuit fl ow. This can cause damage to internal seals.
• Always replace hoses, couplings and other parts with replacement parts recommended by Stanley
Hydraulic Tools. Supply hoses must have a minimum working pressure rating of 2500 psi/172 bar.
• Do not exceed the rated fl ow and pressure. See Specifi cations in this manual for correct fl ow rate and
pressure rating. Rapid failure of the internal seals may result.
• Always keep critical tool markings, such as warning stickers and tags legible.
• Keep tool bit sharp for maximum drilling performance. Make sure that tool bits are not chipped or
rounded on the striking end.
• Never operate a hammer drill without a tool bit or without holding it against the work surface.
• Tool repair should be performed by experienced personnel only.
• Make certain that the recommended relief valves are installed in the pressure side of the system.
• Do not use the tool for applications for which it was not intended.
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Page 13
TROUBLESHOOTING
PROBLEM CAUSE REMEDY
Power unit not functioning.
Couplers or hoses blocked. Remove restriction.
Tool does not run.
Tool does not drill effectively.
Tool operates slow.
Tool gets hot. Hot fl uid going through tool.
Fluid leakage on drill steel. Lower piston or drive hex seal failure. Replace seals.
Fluid leakage through charge
valve cap.
Fluid leakage around trigger. Valve spool seal failure. Replace seals.
Low rotation torque.
Pressure and return line hoses reversed
at ports.
Mechanical failure of piston or automatic
valve.
Power unit not functioning.
Couplers or hoses blocked. Remove restriction.
Low accumulator charge (pressure hose will
pulse more than normal).
Fluid too hot (above 140°F/60°C).
Insuffi cient air or water 15-25 cfm/7-12 liters per second minimum required.
Low gpm supply from power unit.
High back-pressure.
Couplers or hoses blocked. Remove restriction.
Orifi ce plug blocked. Remove restriction.
Fluid too hot (above 140°F/60°C) or too cold
(below 60°F/16°C).
Relief valve set too low. Adjust relief valve to 2100-2250 psi/145-155 bar.
Upper piston seal failure or accumulator
o-ring failure or accumulator charge loss
or failure.
Motor not completely broken in. Continue operation to break in motor.
Excessive oil temperature causes operating
pressure loss.
Damage to motor clearances. Repair as required.
Insuffi cient air or water. 15-25 cfm/7-12 liters per second minimum required.
Mechanical binding during drilling. Take care to guide drill straight.
Check power unit for proper fl ow and pressure (7-9
gpm/26-34 lpm, 1500-2000 psi/105-140 bar.
Be sure hoses are connected to their proper ports.
Disassemble breaker and inpsect for damaged parts.
Check power unit for proper fl ow and pressure (7-9
gpm/26-34 lpm, 1500-2000 psi/105-140 bar.
Recharge accumulator. Replace diaphragm if charge
loss continues.
Provide cooler to maintain proper fl uid temperature
(130°F/55°C).
Check power unit for proper fl ow
(7-9 gpm/26-34 lpm).
Check hydraulic system for excessive back-pressure
(over 250 psi/17 bar).
Check power unit for proper fl uid temperature. Bypass
cooler to warm the fl uid or provide cooler to maintain
proper temperature.
Check power unit. Be sure fl ow rate is not too high
causing part of the fl uid to go through the relief valve.
Provide cooler to maintain proper fl uid temperature
(140°F/60°C max).
Check the relief valve setting.
Replace seals, recharge or replace accumulator
diaphragm.
Provide cooler to maintain oil temperature (under
140°F).
13
Page 14
CHARGING THE ACCUMULATOR
ACCUMULATOR TESTING
the tester from the charging valve and connect the charging
assembly chuck directly to the charging valve.
PROCEDURE
To check or charge the accumulator the following equipment
is required:
31254 Charge Kit: which includes the following. Shown on
page 15.
• Accumulator Tester (Part Number 02835).
• Charging Assembly (Part Number 15304) Includes a liquid
fi lled guage w/snub valve, hose and charge fi tting.
• NITROGEN bottle with a 800 psi/56 bar minimum charge.
(Not included in 31254 Charge Kit.)
1. Remove the valve cap assembly from the sinker drill (see
next page for location).
2. Remove the protective cap and loosen the 5/8-inch hex
locking nut on the tool charging valve 1-1/2 turns.
3. Holding the chuck end of Accumulator T ester (Part Number
02835) turn the gauge fully counterclockwise to ensure that
the stem inside the chuck is completely retracted.
3. Adjust the regulator to the charging pressure of 600 psi/42
bar.
NOTE:
It may be necessary to set the gauge at 650-700 psi/45-48
bar to overcome any pressure drop through the charging system.
4. Open the valve on the charging assembly hose.
5. When the accumulator is fully charged close the valve on
the charging assembly hose and remove the charging assembly chuck from the accumulator tester or tool charging
valve.
6. If the accumulator tester has been used, be sure to turn the
gauge-end fully counterclockwise before removing the tester
from the charging valve of the tool.
7. Tighten the 5/8-inch hex locking nut on the tool charging
valve and replace the protective cap.
8. Replace the valve cap assembly.
4. Thread the tester onto the accumulator charging valve.
Do not advance the gauge-end into the chuck-end. Turn as
a unit. Seat the chuck on the accumulator charging valve and
hand tighten only.
5. Advance the valve stem of the tester by turning the gaugeend clockwise until a pressure is read on the gauge (charge
pressure should be 600-700 psi/42-48 bar).
6. If pressure is OK unscrew the gauge-end from the chuck to
retract the stem, then unscrew the entire tester assembly from
the accumulator charging valve. If pressure is low, charge the
accumulator as described in the following paragraph.
7. Tighten the 5/8-inch hex locking nut on the tool charging
valve. Be careful not to overtighten. Install the protective cap
and valve cap assembly.
ACCUMULATOR CHARGING
1. Perform steps 1 through 4 of the accumulator testing procedure above.
2. Connect the chuck of the charging assembly to the charging valve on the accumulator tester or, if preferred, remove
14
Page 15
CHARGING THE ACCUMULATOR
15
Page 16
SPECIFICATIONS
Shank Size .............................................................................................................4-1/4 in. x 7/8 in. Hex/108 mm x 22 mm
Pressure Range...........................................................................................................................1500-2000 psi/105-140 bar
Flow Range ............................................................................................................................................7-9 gpm / 26-34 lpm
Optimum Flow ................................................................................................................................................ 9 gpm / 34 lpm
Maximum Back Pressure.................................................................................................................................250 Psi/17 bar
Connect Size & Type ...................................................................................................................3/8 in. Male Pipe Hose End
Weight ...............................................................................................................................................................52 lbs / 24 kg
Length................................................................................................................................................................23 in. / 58 cm
Width .................................................................................................................................................................14 in. / 35 cm
Hose Whips ...............................................................................................................................................................Included
Port Size ......................................................................................................................................................... -8 SAE O-Ring
ACCESSORIES
Drill Steels for use with Air
7/8 in./22 mm Hex x 4-1/4 in./108 mm H Thread, 24 in. / 61 cm UC .............................................................................05174
Carbide Rock Bits for use with Air
1-3/8 in./34.9 mm Diameter H Thread ...........................................................................................................................05177
1-1/2 in./38.1 mm Diameter H Thread ...........................................................................................................................05178
2 in./50.8 mm Diameter H Thread .................................................................................................................................04914
UC denotes dimension measured from bottom tip of tool to bottom surface of collar.
Test Equipment
Accumulator Charge Assembly (incl. Liquid Filled Gauge w/ Valve, Hose, & Charge Fitting) .......................................15304
Accumulator Tester ........................................................................................................................................................02835
Flow and Pressure Tester ..............................................................................................................................................04182
Accumulator Charge Kit (Includes 02835 tester, 15304 charge assy and 372047 charge kit box) ...............................31254
16
Page 17
SK47 PARTS ILLUSTRATION
17
Page 18
SK47 PARTS LIST
Item Part No. Qty Description
1 07975 1
2 20499 1 CHARGE VALVE
3 04371 1 TRIGGER
4 07483 1 HANDLE
5 07492 2 SPIROL PIN
6 02494 2 HANDLE GRIP
7 04058 1 SPRING
8 04077 1
15188 1
9 07699 1
10 04057 1 BUSHING
11 00293 1 O-RING
12 01362 1 O-RING
13 04056 1 ROD WIPER
14 07493 1 CHARGE VALVE CAP
15 08067 4 SIDE ROD
16 04374 4 LOCK NUT
17 07479 1 ACCUMULATOR DIAPHRAGM
18 11588 1 ACCUMULATOR VALVE BLOCK
19 04381 2 BACK-UP RING
20 04379 2 O-RING
21 08088 1 PORTING BLOCK
22 08089 1 AUTOMATIC VALVE BODY
23 04571 2 PUSH PIN
24 04382 1 AUTOMATIC VALVE
25 04605 4 PUSH PIN
26 08091 1 PISTON
27 08090 1 FLOW SLEEVE
28 04383 1 FLOW SLEEVE TUBE
29 08099 1 TUBE SEAL
30 08100 1 AIR TUBE ASSY
31 08092 1 DRIVE MOTOR CONTROL BLOCK ASSY
16446 1
32 08097 1 VALVE SPOOL
33 08098 1 SPRING
34 08104 1 O-RING PLUG
35 04934 1 CUP SEAL
36 04780 1 WASHER
37 04386 1 CUP SEAL
38 02022 1 O-RING
39 00473 1 O-RING
40 04937 1 MOTOR CONTROL VALVE
41 01211 3 O-RING
42 04938 1 WASHER
43 04940 1 RETAINING RING
HANDLE ASSEMBLY (INCLUDES ITEMS 2
THRU 5)
VALVE SPOOL - OPEN CENTER- MODEL
SK47130
VALVE SPOOL - OPEN, CONSTANT ONMODEL SK47131
BUSHING ASSY (INCLUDES ITEMS 10
THRU 12)
DRIVE MOTOR CONTROL BLOCK ASSY
W/O DELAY VALVE
Item Part No. Qty Description
44 04939 1 LEVER
45 01607 1 SETSCREW
46 01749 2 ROLL PIN
47 11197 2 BACK-UP RING
48 00783 2 PIPE PLUG
49 02900 5 ROLL PIN
50 08096 1 GASKET
51 08095 1 MOTOR CHAMBER
52 03826 2 BEARING
53 04033 1 IDLE GEAR
54 11196 2 QUAD RING
55 04949 1 THRUST BACK-UP WASHER
56 04948 1 THRUST WASHER
57 08094 1 DRIVE HEX
58 04787 1 KEY
59 04947 2 BEARING
60 05975 1 DRIVE GEAR
61 00713 2 DOWEL PIN
62 08093 1 MOTOR PLATE
63 00682 2 CAPSCREW
64 04756 2 LATCH WASHER
65 07063 8 WAVE SPRING
66 04759 1 BACK-UP SPRING
67 04761 1 RETAINING RING
68 16445 1 LATCH
69 01652 2 HOSE ASSY
70 01257 1 O-RING
71 04801 1 HOSE ASSY
72 00769 1 CAPSCREW
73 00114 1 ROLL PIN
74 00018 2 O-RING
75 03972 1 FEMALE COUPLER
76 03973 1 MALE COUPLER
77 18643 4 SETSCREW
78 ----- - NO ITEM
79 03288 2 DUST CAP (NATO VERSION ONLY)
80 06343 1
81 06345 2
82 08103 1 NAME TAG
83 11207 1 CIRCUIT TYPE D STICKER
09542 SEAL KIT
PLASTIC CAP (US VERSION ONLY) NOT
SHOWN
PLASTIC PLUG (US VERSION ONLY) NOT
SHOWN
18
Page 19
WARRANTY
Stanley Hydraulic Tools (hereinafter called “Stanley”), subject to the exceptions contained below, warrants new hydraulic tools for a period of one year from the date of sale to
the fi rst retail purchaser, or for a period of 2 years from the shipping date from Stanley, whichever period expires fi rst, to be free of defects in material and/or workmanship at
the time of delivery, and will, at its option, repair or replace any tool or part of a tool, or new part, which is found upon examination by a Stanley authorized service outlet or by
Stanley’s factory in Milwaukie, Oregon to be DEFECTIVE IN MATERIAL AND/OR WORKMANSHIP.
EXCEPTIONS FROM WARRANTY
NEW PARTS: New parts which are obtained individually are warranted, subject to the exceptions herein, to be free of defects in material and/or workmanship at the time
of delivery and for a period of 6 months after the date of fi rst usage. Seals and diaphragms are warranted to be free of defects in material and/or workmanship at the time
of delivery and for a period of 6 months after the date of fi rst usage or 2 years after the date of delivery, whichever period expires fi rst. Warranty for new parts is limited to
replacement of defective parts only. Labor is not covered.
FREIGHT COSTS: Freight costs to return parts to Stanley, if requested by Stanley for the purpose of evaluating a warranty claim for warranty credit, are covered under this
policy if the claimed part or parts are approved for warranty credit. Freight costs for any part or parts which are not approved for warranty credit will be the responsibility of the
individual.
SEALS & DIAPHRAGMS: Seals and diaphragms installed in new tools are warranted to be free of defects in material and/or workmanship for a period of 6 months after the
date of fi rst usage, or for a period of 2 years from the shipping date from Stanley, whichever period expires fi rst.
CUTTING ACCESSORIES: Cutting accessories such as breaker tool bits are warranted to be free of defects in material and or workmanship at the time of delivery only.
ITEMS PRODUCED BY OTHER MANUFACTURERS: Components which are not manufactured by Stanley and are warranted by their respective manufacturers.
a. Costs incurred to remove a Stanley manufactured component in order to service an item manufactured by other manufacturers.
ALTERATIONS & MODIFICATIONS: Alterations or modifi cations to any tool or part. All obligations under this warranty shall be terminated if the new tool or part is altered or
modifi ed in any way.
NORMAL WEAR: any failure or performance defi ciency attributable to normal wear and tear such as tool bushings, retaining pins, wear plates, bumpers, retaining rings and
plugs, rubber bushings, recoil springs, etc.
INCIDENTAL/CONSEQUENTIAL DAMAGES: To the fullest extent permitted by applicable law, in no event will STANLEY be liable for any incidental, consequential or special
damages and/or expenses.
FREIGHT DAMAGE: Damage caused by improper storage or freight handling.
LOSS TIME: Loss of operating time to the user while the tool(s) is out of service.
IMPROPER OPERATION: Any failure or performance defi ciency attributable to a failure to follow the guidelines and/or procedures as outlined in the tool’s operation and
maintenance manual.
MAINTENANCE: Any failure or performance defi ciency attributable to not maintaining the tool(s) in good operating condition as outlined in the Operation and Maintenance
Manual.
HYDRAULIC PRESSURE & FLOW, HEAT, TYPE OF FLUID: Any failure or performance defi ciency attributable to excess hydraulic pressure, excess hydraulic back-pres-
sure, excess hydraulic fl ow, excessive heat, or incorrect hydraulic fl uid.
REPAIRS OR ALTERATIONS: Any failure or performance defi ciency attributable to repairs by anyone which in Stanley’s sole judgement caused or contributed to the failure
or defi ciency.
MIS-APPLICATION: Any failure or performance defi ciency attributable to mis-application. “Mis-application” is defi ned as usage of products for which they were not originally
intended or usage of products in such a matter which exposes them to abuse or accident, without fi rst obtaining the written consent of Stanley. PERMISSION TO APPLY ANY
PRODUCT FOR WHICH IT WAS NOT ORIGINALLY INTENDED CAN ONLY BE OBTAINED FROM STANLEY ENGINEERING.
WARRANTY REGISTRATION: STANLEY ASSUMES NO LIABILITY FOR WARRANTY CLAIMS SUBMITTED FOR WHICH NO TOOL REGISTRATION IS ON RECORD. In
the event a warranty claim is submitted and no tool registration is on record, no warranty credit will be issued without fi rst receiving documentation which proves the sale of
the tool or the tools’ fi rst date of usage. The term “DOCUMENTATION” as used in this paragraph is defi ned as a bill of sale, or letter of intent from the fi rst retail customer. A
WARRANTY REGISTRATION FORM THAT IS NOT ALSO ON RECORD WITH STANLEY WILL NOT BE ACCEPTED AS “DOCUMENTATION”.
NO ADDITIONAL WARRANTIES OR REPRESENTATIONS
This limited warranty and the obligation of Stanley thereunder is in lieu of all other warranties, expressed or implied including merchantability or fi tness for a particular purpose
except for that provided herein. There is no other warranty. This warranty gives
vary depending upon applicable law.
the purchaser specifi c legal rights and other rights may be available which might
19
Page 20
Stanely Hydraulic Tools
3810 SE Naef Road
Milwaukie, Oregon
503-659-5660 / Fax 503-652-1780
www.stanleyhydraulic.com
20
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