Racine Railroad Products 910161 Operating instructions
910161
7/16″(.44) Hydraulic Impact Drill
10.2018 Rev 2
Page 3
Table of Contents
Section 1: Overview and Safety....................................................................................................................4
Hydraulic Impact Drill Overview....................................................................................................................4
Warranty Terms and Conditions ...................................................................................................................4
Safety Information.........................................................................................................................................6
Safety Terms .............................................................................................................................................6
Machine Use and Safety Precautions .......................................................................................................6
Specifications................................................................................................................................................8
Recommended Hydraulic Fluid .................................................................................................................9
Impact Drill Components...............................................................................................................................9
Hoses and Fittings ......................................................................................................................................10
Connecting the Hoses .............................................................................................................................10
Disconnecting the Hoses.........................................................................................................................10
Pre-Operation..............................................................................................................................................11
Setting for Open-Center or Closed-Center................................................................................................11
Open-Center Systems.............................................................................................................................12
Closed-Center Systems...........................................................................................................................13
Operation: Drill Socket / Impact Bit.............................................................................................................14
Handle Grip Hydraulic Flow Indicators....................................................................................................15
Inlet and Outlet Adaptors ............................................................................................................................16
Common Hook-Ups –Couplers..................................................................................................................17
Common Hook-Ups –Plumbed w/ Hose Set..............................................................................................17
Maintenance................................................................................................................................................18
Troubleshooting ..........................................................................................................................................18
Determining the Problem Area................................................................................................................19
Troubleshooting Guide............................................................................................................................20
Hose Selection............................................................................................................................................21
Scope.......................................................................................................................................................21
Selection..................................................................................................................................................21
Installation................................................................................................................................................22
Maintenance............................................................................................................................................23
Parts and Assembly Drawings....................................................................................................................24
910161
7/16″(.44) Hydraulic Impact Drill
10.2018 Rev 2
Page 4
Section 1: Overview and Safety
Hydraulic Impact Drill Overview
RRP designs and manufactures equipment primarily for the repair and new construction of rail and
railroad tie track maintenance.
Our product line focuses on rail fastening application/removal/adjustment equipment, other tie material
(OTM) reclamation, wood and concrete railway tie repair, and tie plate handling/distribution.
Hydraulic Impact Drill is a low pressure hydraulic impact drill MAG Series (Machined Aluminum, Gerotor)
designed for drilling holes and fastening hardware.
The body of this drill is made from aircraft grade extruded 6061-T6 Aluminum while the forged handle is
made from 7075-T6 aluminum. All internal porting is accomplished through CNC machining for precision,
reliability and increased repeatable performance.
The drill balances well in a gloved hand while the handle, grip and trigger have been ergonomically
designed for ease of operation. The drill incorporates proven gerotor motor for long life and greater
efficiency over gear type motors.
Warranty Terms and Conditions
Warranty Period
Each new machine and new parts of our manufacture are warranted against defects in material and
workmanship for one year from the date of shipment from our factory.
When contacting customer service for factory parts, service or warranty support please provide the:
•Racine Railroad Products Model
•Serial Number
•Any locally assigned identification
Vendor Parts Warranty Period
Other equipment and parts used, but not manufactured by Racine Railroad Products, Inc., are covered
directly by the manufacturer's warranty for their products.
Warranty Parts and Service
We will repair or replace, without charge, F.O.B. factory, Racine, Wisconsin, USA, any part Racine
Railroad Products manufactures which is proven to be defective during the warranty period.
Material claimed defective must be returned, if requested, to the factory within 30 days from the date of
the claim for replacement. Ordinary wear and tear, abuse, misuse and neglect are not covered by this
warranty. Depending upon the circumstances, we may provide technical assistance and/or technical
service support, without charge, to assist in the correction of warranty related problems.
910161
7/16″(.44) Hydraulic Impact Drill
10.2018 Rev 2
Page 5
Non-Warranty Parts and Service
Material damaged through normal wear and tear, abuse, misuse and/or neglect are not covered by our
warranty and should be ordered directly from our Customer Service.
Note: Parts for models that are no longer in production may not be available.
Non-Warranty Parts Orders
When placing a parts order please provide the following information:
•Company Name and Billing Address
•Purchase Order Number and Issuing Authority
•Shipping Address
•Special Handling Instructions
•Contact Phone Number
•Machine Model and Serial Number
•Part Numbers and Quantities Being Ordered
Note: Please use Racine Railroad Products part numbers when ordering parts. Racine Railroad
Products part numbers are shown in the parts lists and drawings of this manual and have only
six (6) numbers.
Any part number with other than six numbers (e.g. contains alpha-numeric characters) is a Vendor Part
Number and not a Racine Railroad Products part number
910161
7/16″(.44) Hydraulic Impact Drill
10.2018 Rev 2
Page 6
Safety Information
For safe installation and operation of this equipment, carefully read and understand the contents of this
manual. Improper operation, handling, or maintenance can result in equipment damage and personal
injury.
Only trained and authorized personnel should be allowed to operate this machine. In addition, all
personnel at the worksite (gang) should be aware of the safety concerns and their individual
responsibilities prior to working this machine.
Please read and comply with all the safety precautions in this manual before operating this machine.
Your safety is at risk.
Safety Terms
DANGER indicates a hazardous operating procedure, practice, or
condition. If the hazardous situation is not avoided death or
serious injury will occur.
WARNING indicates a hazardous operating procedure, practice, or
condition. If the hazardous situation is not avoided death or
serious injury could occur.
CAUTION indicates a potentially hazardous operating procedure,
practice, or condition. If the hazardous situation is not moderate or
minor injury could occur.
Note: Indicates an essential operating procedure, practice, or
condition. No personal injury is possible.
Machine Use and Safety Precautions
Failure to follow safety precautions when operating this equipment can
result in serious injury or death to the operator or other persons in the
area. Observe the following precautions whenever you are operating,
working on or near this equipment.
Do not use this machine for other than its intended purpose.
Do not make any modifications without authorization or written approval from Racine Railroad Products.
Replace all Racine Railroad Products and OEM parts with genuine Racine Railroad Products and OEM
parts. Using non-OEM parts may compromise the safety of the machine.
Do not wear loose clothing, jewelry, radio belts, etc., when operating, working on or near this equipment.
They can be caught in moving parts and may result in severe injury.
Always wear appropriate personal protective clothing when operating this equipment: e.g. Orange safety
vest, hard hat, safety glasses with side shields, hearing protection, steel-toed safety boots, leather gloves,
dust respirator, etc.
Always lift heavy objects with the knees and legs, not the arms and back.
Always keep hands, arms, feet, head, clothing, etc., out of the operating area and away from all rotating
or moving components when operating, working on or near this machine.
Always make sure that all guards, covers, belts, hoses and operating components are in good working
order and that all controls are in the appropriate position before starting the engine.
910161
7/16″(.44) Hydraulic Impact Drill
10.2018 Rev 2
Page 7
Always make sure that all safety equipment installed properly and are in good working order. Do not
operate the machine until unsafe conditions have been corrected.
Always operate in a well-ventilated area and make sure that the air filters, air filter covers, and muffler
are in good condition.
Always keep the machine clean and free of debris. Operate the machine in a safe and responsible
manner. Exercise caution when fueling, working on or near rotating or moving components, hot
components and fuel systems. Be aware of potential fire hazards and prevent sparks, exhaust, etc., from
starting fires on the machine and/or work area.
Always comply with all instructions provided on any decals or placards installed on the machine and with
any relevant amplifying information provided in this manual or other general operating procedures.
Always shut disconnect the drill from the power source and make sure that all controls are in a safe
position and install all appropriate locking and safety devices before doing any of the following:
•Lubricating
•Adjusting
•Installing Tooling
•Making Repairs
•Performing Service
Tools are not insulated for use on or near energized conductors. Use of
these tools near energized conductors may lead to electrical shock, causing
severe injury or death.
Do not use these tools near energized conductors without adequately insulating
operator and surroundings.
Tool parts rotate at high speeds and can cause severe personal injury. Keep all
body parts away from moving parts of the tool when connected to a hydraulic
power source or during operation.
Operator must clear all bystanders from the work area when handling, starting,
and operating a tool to avoid injury to bystanders.
Do not over-reach while using a tool. Loss of balance can cause serious
personal injury or death. Move closer to work area and securely support yourself
and your work. Always keep proper footing and balance.
910161
7/16″(.44) Hydraulic Impact Drill
10.2018 Rev 2
Page 8
Hydraulic fluid is under pressure.
Always depressurize the hydraulic system before connecting or disconnecting a
tool to avoid serious injury from escaping fluid. If injury results from escaping
hydraulic fluid, seek immediate medical attention to avoid serious bodily injury.
Hot hydraulic fluid.
Exposure to hot hydraulic fluid can cause severe burns. Do NOT connect or
disconnect a tool while the hydraulic power source is running and/or the
hydraulic fluid is hot.
Never lock a tool trigger in the power ON position. A tool locked ON can lead
to serious injury or death
Specifications
Weight:..........................7.6 lbs (3.5 kg)
Length: ..........................9.0 in (229 mm)
Height:...........................9.6 in (243 mm)
Width:............................3.6 in (91 mm)
Chuck Type:..................7/16" Quick Chuck
Optimal Pressure: .........1000 - 2000 PSI
Flow Range:..................4-12 GPM
Optimal flow Range:......4-8 GPM
Operation:......................Open/Closed option
Motor:............................Gerotor
Torque:..........................550 ft-lbs
Tool Ports:.....................#6 SAE O-ring (F)
System fluid temperature must not exceed 140º F (60º C) regardless of operating conditions and/or system.
Sufficient oil cooling is recommended to limit the system fluid temperature.
Maximum flow must not exceed the recommended rate as noted on the tool specification label. Install a flow
meter in the return line to test the rate of all flow in the system before working the tool.
Operating pressure at the tool must not exceed 2000 lb/in2 (18.8 MPa). The system relief valve must be
located in the supply circuit between the hydraulic power source and the tool to limit pressure to the tool.
910161
7/16″(.44) Hydraulic Impact Drill
10.2018 Rev 2
Page 9
Recommended Hydraulic Fluid
Any non-detergent hydraulic fluid which meets the following specifications may be used:
S.U.S.............................@ 100º F (38º C) 140 to 225
@ 210º F (99º C) 40 minimum
Flash Point ....................340º F (170º C) min.
Pour Point......................-30º F (-34º C) min.
Impact Drill Components
910161
7/16″(.44) Hydraulic Impact Drill
10.2018 Rev 2
Page 10
Hoses and Fittings
Always stop the hydraulic power source flow and depressurize the
system before connecting a tool. Failure to comply could result in
severe bodily injury.
Return (tank) hose connection should always be connected before
supply (pressure) hose connection to prevent pressure build-up
inside the tool which could result in severe bodily injury.
Hoses and fittings used with this tool must comply with SAE Standard J1273 (see Hose Selection)
recommended practice for Selection, installation and Maintenance of Hose and Hose Assemblies.
The recommended hose diameter for the supply line is 3/8 to 1/2 in.
Supply hoses must have a minimum working pressure rating of 2500lblin2 (17.5 Mpa). lt is recommended
that the hose diameter for the return line be equal to or greater than the supply line. This may help reduce
back pressure.
Connecting the Hoses
1. Stop the hydraulic power source.
2. Depressurize the system.
3. Allow system and hydraulic fluid to cool.
4. Remove dirt or debris from the couplers before connecting to a power source.
5. Securely connect the return (tank) hose from the power source (port T) to the tool (OUT port).
6. Securely connect the supply (pressure) hose from the power source (port T) to the tool (IN port).
Disconnecting the Hoses
Always stop the hydraulic power source flow and depressurize the
system before disconnecting a tool. Failure to comply could result
in severe bodily injury.
•Supply (pressure) hose connection should always be
disconnected from the tool before the return (tank) hose
connection to prevent pressure build-up inside the tool.
•Remove lines, fittings or components slowly to release any
trapped pressure.
•lf injury results from escaping hydraulic fluid, seek immediate
medical attention. Serious bodily injury may occur if proper
medical attention is not administered immediately.
1. Stop the hydraulic power source.
2. Depressurize the system.
3. Allow system and hydraulic fluid to cool.
4. Disconnect the supply (pressure) hose to the power source (port P) from the tool (IN port).
5. Disconnect the return (tank) hose to the hydraulic power source (port T) from the tool (OUT port).
6. To prevent contamination, always install dust caps over the hydraulic ports of the tool when
disconnected.
910161
7/16″(.44) Hydraulic Impact Drill
10.2018 Rev 2
Page 11
Pre-Operation
Accidental tool start can cause serious personal
injury
.
Do not
install or remove tool attachments on a tool that
is
connected to
a hydraulic power source.
Tool and attachment may be hot. Hot surfaces can
cause
serious
bodily burns. Use caution when working
around
these
components.
Worn or damaged attachments may fail during use
and
cause
severe personal injury. Discard tool attachment
if
any cracks,
chips or gouges are
present.
Bit may fail during use, potentially causing
severe
personal injury. Some impact bits with a long spiral
or
wide flute spacing may not be acceptable for use with
this
tool.
Drill test holes to determine if bit whips, bends
under
side-load or lunges forward at breakthrough. Do
not
use
a bit that behaves as
above.
1. Inspect the quick change chuck. Remove any dirt
or
other contamination that may have
accumulated
in
the
chuck.
2. Slide and hold quick change chuck away from
tool
and remove drive
shank
3. Insert desired bit into hex socket of tool and
release
chuck
.
4. Toremove drill bit, slide and hold quick change
chuck
away from tool and remove
bit.
Some tool attachments have sharp edges and can cut skin even
when stationary. To avoid injury always wear protective gloves
when handling, removing and installing tool attachments.
Setting for Open-Center or
Closed-Center
The Impact Drill is equipped to allow the tool to be used with either Open or Closed Center hydraulic
power systems. To change between open and closed center remove the bolt holding the trigger to the
spool and flip the trigger up.
1. For open center operation, turn trigger spool so that the red dot on the front of the trigger points
towards the letters 0/C on trigger.
2. For closed center, turn trigger spool so that the red dot on the front of the trigger points toward the
letters C/C on trigger.
3. Reattach the trigger.
910161
7/16″(.44) Hydraulic Impact Drill
10.2018 Rev 2
Page 12
Open-Center Systems
An Open-Center System is a hydraulic system in which
the oil circulates at all times.
•When a tool is in the circuit and not activated, the oil
bypasses the tool motor returning to tank.
•When the trigger is activated, oil is diverted by an
activation spool into the gerotor motor.
•These systems do not provide as much instant power
as their closed-center counterparts.
The Impact Drill is factory set at Open-
Center.
This is indicated by the position of the dot
to the right of the slot.
The green represents the hydraulic fluid flow path through the drill.
The trigger is not activated. Activation spool closed
and returns hydraulic fluid back to tank.
The trigger is activated. Activation spool now
open and porting directs fluid to gerotor motor to
turn shaft.
910161
7/16″(.44) Hydraulic Impact Drill
10.2018 Rev 2
Page 13
Closed-Center Systems
A Closed-Center System is hydraulic system in which the oil
flows from the pump source to the tool (in its off position) and
stops. It does not return to the tank
•When the trigger is actuated the pressure and flow is
instantaneously released into the tool.
•These systems provide great amounts of instant power.
Because of the surges created, the system must contain
an accumulator to limit any potential damage these
spikes might cause.
The Impact Drill is at Closed-Center.
This is indicated by the position of the
dot to the right of the slot.
The green represents the hydraulic fluid flow path through the drill.
The trigger is not activated. Activation spool
closed with no return path.
The trigger is activated. Activation spool now open
and porting directs fluid to gerotor motor to turn
shaft.
910161
7/16″(.44) Hydraulic Impact Drill
10.2018 Rev 2
Page 14
Operation: Drill Socket / Impact Bit
The Impact Drill operates by automatically supplying fluid in such a way that it turns the drive shaft of the
assembly. As the trigger is depressed, it moves the spool to close off the flow of oil to the return port and
directs the flow of oil through the tool circuit.
The flow of oil through the directional spools causes the shaft to turn and rotate the drive assembly. With
no or minimal resistance, the anvil and hammer turn in unison.
As greater resistance is encountered during use of the drill, the force of the resistance causes the
hammer to slip and strike the anvil resulting in the impact action. The impact action continues until the
resistance is reduced or the work completed.
Rotating parts. Keep all body parts away from rotating parts of the
tool to avoid personal injury.
1. Inspect the square drive. Remove any dirt or other contamination that may have accumulated in
the chuck.
2. Slide desired square drive socket onto drive on the tool or insert the desired bit in quick-change
chuck.
3. Connect the hydraulic hoses from the hydraulic power source to the tool.
4. Start the hydraulic power source. Allow power source to run (idle) for a few minutes to warm
hydraulic reservoir fluid.
5. Set the directional spool to the desired position (forward or reverse).
The torque values listed under specifications are approximate and
dependent on hydraulic oil temperature, fluid condition, pump flow
and many other variables present while using these tools.
To achieve a specified torque, use a calibrated torque wrench.
Failure to follow this instruction may cause an incorrect torque
value in situations requiring a specific torque.
Never change spool direction while the tool is operating. Shifting the spool while the tool is
operating may cause internal tool damage. Always allow the tool to come to a complete stop
before changing direction.
6. Grasp the tool handle. Place your opposite hand on the top of the tool. This will allow leverage to be
applied while operating.
7. To start the tool, squeeze the trigger.
8. To stop the tool, release the trigger.
9. After the tool has stopped rotating completely, lay the tool on a flat stable surface.
10. When the tool is not in use, stop the hydraulic power source flow to reduce excess heat build-up
and unnecessary wear on tool components.
910161
7/16″(.44) Hydraulic Impact Drill
10.2018 Rev 2
Page 16
Inlet and Outlet Adaptors
The steel adaptors serve to protect the forged
aluminum threads from being damaged from other
adaptors or couplers, especially tapered NPT pipe
thread.
The adaptors are polarized; the output adaptor is
larger (SAE 8) because its internal feature
interfaces with a reverse flow check ball.
Note: Removal of these adaptors by a customer
voids the warranty.
910161
7/16″(.44) Hydraulic Impact Drill
10.2018 Rev 2
Page 17
Common Hook-Ups –Couplers
Common Hook-Ups –Plumbed w/ Hose Set
Non-Conductive Rubber (NCR) Hoses
•8-foot hose
•10-foot hose
Swivels
•2 required
•Located between the Inlet/Outlet adaptors and the hose assembly
•Used for ease of assembly when attaching the hose to the drill at the
factory prior to shipment.
Note: NCR hoses are banded at various intervals for ease of
maneuverability when in use.
Swivels
Hose Bands
910161
7/16″(.44) Hydraulic Impact Drill
10.2018 Rev 2
Page 18
Maintenance
Wipe all external surfaces after each use with a clean, lint free cloth to remove surface contaminants from
the tool.
The service life of the tool will be maximized by proper care and maintenance. The maintenance schedule
below is recommended.
Daily
•Wipe all tool surfaces and fittings and couplings free of grease, dirt and foreign materials.
•inspect the tool, hydraulic system, hoses, and fittings for signs of leaks, cracks, wear, and/or
damage. Replace if necessary.
•To prevent contamination, always install dust caps over the hydraulic ports when disconnected.
•inspect hydraulic hoses and couplings every day. Repair or replace if leakage, cracking, wear or
damage is evident.
Monthly
•Perform a detailed inspection of the system hoses and fittings according to the hydraulic hose
operator's manual. Replace the hoses and/or fittings if necessary.
•Clean and repack impact hammer assembly with Mobil Delvac Xtreme Grease to insure proper
lubrication.
Troubleshooting
Stop and depressurize the hydraulic system before connecting or
disconnecting a tool. Failure to follow these instructions can lead
to severe personal injury.
Read and follow the instructions in this manual for the proper way
to connect and disconnect tools from the hydraulic system.
1. The tool must be connected to the correct power source system. Verify the hydraulic power source
system matches the tool requirements.
2. Verify that the pressure and return hoses are connected properly to the tool and hydraulic power
source ports.
3. The hydraulic power source reservoir must be filled to full level with hydraulic fluid.
4. After verifying the above, start the power source flow. All power source shut-off devices must be
engaged or opened (clutch engaged, separate ON/OFF valves open, etc.).
5. Check the tool to see it if operates
Note: lf the tool does not operate, it will be necessary to determine where the problem exists (i.e., in the
tool, hoses, or hydraulic power source).
910161
7/16″(.44) Hydraulic Impact Drill
10.2018 Rev 2
Page 19
Determining the Problem Area
1. Stop the power source.
2. Depressurize the system and allow to cool.
3. Disconnect the existing tool from the hoses and power source.
4. Stop the power source flow.
5. Disconnect the existing hoses from the known, properly operating tool and power source.
6. See the tool's operator manual for the correct disconnect Procedure.
7. Connect a different set of hoses to the known, properly operating tool and power source.
8. Start the power source flow.
lf the known, properly operating tool operates with the different set of hoses, the problem is in the
disconnected hoses.
lf the known, properly operating tool does not operate, the problem is in the power source. See your
power source operator's manual for troubleshooting.
lf, after following all steps in the Troubleshooting section, it has been determined that the problem lies
with the tool, proceed to the Troubleshooting Guide. Use of the Troubleshooting Guide will help you
identify and determine the cause of the problem.
Note: lt is not recommended that the end-user attempt to perform repairs, as special tools and
procedures are required.
Excess heat may be generated through any combination of pump inefficiencies, oil bypassing over relief
valves, pre-existing flow controls, or unusual restrictions in the system. Where these and other possible
inefficiencies exist, substantially larger reservoirs and/or coolers may be required.
Should you have any problems or questions with your Impact Drill, please do not hesitate to contact the
Racine Railroad Products.
910161
7/16″(.44) Hydraulic Impact Drill
10.2018 Rev 2
Page 20
Troubleshooting Guide
Symptom
Cause
Resolution
Tool will not operate.
Tool not properly connected
Check pressure and return
conditions
Low oil volume and/or pressure
Check hydraulic power source. Tool
will not operate if inlet pressure is
below 1000 psi or flow is less than
40 GPM
Tool runs at low speed.
Low oil volume and/or pressure
Check hydraulic power source for
recommended flow, pressure and
proper conditions.
Contaminated hydraulic system
Remove contamination and clean
hydraulic system.
Too runs too fast.
Relief valve blocked or
contaminated.
Check relief valve. Clean or replace
as necessary.
Excessive pressure or flow.
Verify correct hydraulic power
source is being used.
Adjust hydraulic power supply.
Oil leakage from trigger area.
Damaged O-rings in spool.
Replace O-rings.
*Factory service is required.
Actuation Trigger sticks.
Excessive flow.
*Factory service is required.
Check trigger, sleeve spool for
binding.
Broken spring.
Replace spring.
Contamination.
Clean sleeve and spool.
Check hydraulic system.
Tool trigger plunger sticks or
works hard.
Check for dirt or deposits.
Clean components
Trigger binding (trigger bent,
trigger pivot pin to tight, etc.)
Inspect, adjust trigger where
binding occurs.
System over heats.
Excessive flow.
Reduce RPM of engine.
Inefficient cooling.
Increase reservoir size and/or oil
cooler.
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