MODEL GH GRINDER STRAIGHT HANDLE OPERATION, MAINTENANCE, AND REPAIR MANUAL

Transcription

1 MODEL GH GRINDER STRAIGHT HANDLE OPERATION, MAINTENANCE, AND REPAIR MANUAL nd AVENUE NORTH * MOORHEAD, MN, USA PHONE (218) * FAX (218) ADDRESS; info@portaco.com * INTERNET ADDRESS:

2 TABLE OF CONTENTS 1.0 Introduction 1.1 General Information 1.2 Features 1.3 Options 1.4 Safety Summary 1.5 General Safety Precautions 1.6 Warning and Caution Statements 1.7 Training Requirements 2.0 Installation Instructions 2.1 Unpacking Instructions 2.2 Tool Preparations 2.3 Testing 2.4 Hose Requirements 2.5 Hydraulic Fluid Recommendations 2.6 Tool Connecting Procedures 2.7 Work Area Safety Precautions 3.0 Operating Instructions 3.1 Description of Tool 3.2 Controls and Graphics 3.3 Before Operating 3.4 Connecting Hoses 3.5 Operating Instructions 3.6 Disconnecting Hoses 3.7 Cold Weather Operation 3.8 Storage Preparation 4.0 Maintenance Instructions 4.1 Assembly View and Parts List 4.2 Graphic Set Complete 4.3 Care Requirements 4.4 Grinding Wheel Care 4.5 Trouble Shooting 4.6 Technical Specifications

3 Warranty: PortaCo, Inc. warrants to the original purchaser all products manufactured by it to be free from defects in material and workmanship under normal operation conditions and proper application for a period of two years from the date of shipment of such products or for a period of 500 hours of operation by the original purchaser, whichever occurs first. The term original purchaser as used herein, means the person of firm who first purchases the product for his own use and not for resale. Our obligation on this warranty shall be limited to the repair or exchange of warranted products, at our option F.O.B. our factory. The above warranty does not cover conditions over which we have no control, including, without limitation, foreign materials in the oil systems, pressure in excess of recommended maximum, products damaged or subjected to accident, abuse or misuse after shipment from out factory, nor to products altered or repaired by anyone other than authorized personnel. No products shall be returned without prior written authorization from PortaCo, Inc. There will be no acceptance of any changes of labor and/or parts incidental to the removal and remounting of products repaired or replaced under this warranty. PortaCo, Inc. will in no event be liable for any special or consequential damage whatsoever. Copyright: PortaCo, Inc. Incorporated reserves all rights to the design, manufacturer and patents for all products. (Rev. 5/5/90) The safety tag at right is attached to the power unit 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 power unit when not in use.

4 1.0 Introduction 1.1 General Information This manual presents operation, and maintenance information for PortaCo s models GH and GH Grinder Straight Handle. The tool is designed to remove excess weld and rust from the rail. A high-efficiency, pressure loaded motor provides maximum power while reducing heat and minimizing energy waste. A large stone guard provides for optimum protection from sparks and broken stones. (See figure 1.2B arrow A). 1.2 Features The main features of the PortaCo Grinder Straight Handle model GH and GH are as follows. Standard unit: Length 21.0 in/ cm Width 10.5 in/ cm Height 12.0 in/ cm Weight 16.0 lbs/ 7.26 kg (Without stone) The model GH has a convenient handle with a trigger that automatically stops tool operation when released. (See figure 1.2A arrow A). Figure 1.2B All wheels and rollers feature permanently lubricated ball bearings for smooth easy operations. 1.3 Options A a The GH model features a counterclockwise left handed rotation. Figure 1.2A The handle also has a trigger safety lock to avoid any unplanned operation of the grinder. (See figure 1.2A arrow B) B A 1.4 Safety Summary 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 hoses. These safety precautions are given for your safety. Review them carefully before operating the tool and before performing maintenance or repairs. Supervising personnel should develop additional precautions relating to the

5 specific work area and local safety regulations. 1.5 General Safety Precautions The PortaCo, Inc. tools are designed to provide safe and dependable service if operated according to the instructions provided in this manual. Read and understand this manual and any stickers attached to the power unit before operating. Failure to do so could result in personal injury or equipment damage. Check the rules and regulations at your location. The rules may include an employer s work safety program. Regulations may identify hazards such as working around utility supply lines or hazardous slopes. Read and understand any manuals for additional or optional equipment, which maybe shipped with the tool. CAUTION: HIGHLIGHTS AN ESSECNTIAL OPERATING OR MAINTENANCE PROCEDURE, PRACTICE, CONDITION STATEMENT, ETC. WHICH IF NOT STRICTLY OBSERVED, COULD RESULT IN DAMAGE TO, OR DESTRUCTION OF, EQUIPMENT OR LOSS OF MISSION EFFECTIVENESS. 1.7 Training Requirements Operator training for the straight handle grinder should consist of information found in this manual. In addition the operator must receive instructions, both verbally and through demonstrations for applications in which the tool is going to be used. The new operator must start in an area without bystanders and use the tool until able to fully operate the tool under the conditions for the work area. 1.6 Warning and Caution Statements Warning and Caution statements have been strategically placed throughout the text prior to operating or maintenance procedures, practices, or conditions considered essential for the protection of personnel, equipment, and property. WARNING: HIGHLIGHTS A, ESSENTIAL OPERATING, OR MAINTENANCE PROCEDURE, PRACTICE, CONDITION STATEMENT, ETC WHICH IF NOT STRICTLY OBSERVED, COULD RESULT IN INJURY TO, OR DEATH OF, PERSONNEL OR LONG TERM HEALTH HAZARDS. 2.0 INSTALLATION INSTRUCTIONS 2.1 Unpacking Instructions Upon receiving your straight hand grinder promptly remove it from the shipping container. Always keep top side of container up. Inspect unit for damage which may have incurred during shipping and report it to carrier for claim. 2.2 Tool Preparations The straight hand grinder is shipped without a grinding stone. After the grinding stone has been installed the tool is ready for use, there is no additional preparation required.

6 If the tool is used in cold weather, preheat the hydraulic fluid by running power source at low engine speed. Fluid temperature should be at or above 50 F/ 10 C (400-ssu/ 82 centistokes) before use, when using recommended fluids. Using too thick of fluid may result in tool damage. 2.3 Testing WARNING: NEVER STICK FOREIGN OBJECT, FINGERS, OR OTHER EXTRMITIES INTO MOVING MECHANISMS. FAILURE TO FOLLOW THESE INSTRUCTIONS MAY LEAD TO SEVERE PERSONAL INJURY OR TOOL DAMAGE. Check that the trigger pulls to the handle easily. If it pulls hard check for and remove any obstructions. Make sure the grinding stone is screwed on tight and make sure that all stone guards are in place and tight. Connect the tool to the power source following the procedures in section 2.6 of this manual. Hold the grinder by the handles with both hands. Push down on the trigger safety lock and pull the trigger to the handle and the grinding stone should rotate. Release the trigger and the stone should stop rotating. If the stone does not turn when the trigger is pulled or will not stop when released, do not use the tool. See the trouble shooting section of this manual and make the repairs required before using the tool. 2.4 Hose Requirements It is not often necessary or advisable to use long hoses. All hoses must have an oil resistant inner surface and an abrasion resistant outer surface. Each hose must have male pipe ends for most application. Longer hoses can be used when necessary, but can affect the operation of the engine due to resistance in the hose. If small diameter or long hoses are used, or if restrictive fittings are connected to the supply and return ports, the pressure required to push the fluid through the system and back to the tank will be higher. This will reduce tool power. *Important Oil should always flow from the male coupler through the female coupler. NOTE: The pressure increase in uncoupled hoses left in the sun may make them difficult to connect. When possible after use, connect the free ends of the operating hoses together. HOSE TYPES Hydraulic hose types authorized for use by PortaCo, Inc. is as follows: 1. Labeled and certified nonconductive 2. Wire braided (conductive) 3. Fabric braided (not certified or labeled non- conductive) Hose 1: Listed above is the only hose authorized for use near electrical conductors. Hoses 2 and 3: Listed above are conductive and must never be used near electrical conductors

7 HOSE PRESSURE RATING The rated working pressure of the hydraulic hose must be at least 175 bar (2500 psi). HYDRAULIC HOSE RECOMMENDATIONS Table 2.6A FLOW PER CIRCUIT LENGTH EACH HOSE USE INSIDE DIAMETER SAE SPEC HOSE (WIRE BRAID) SAE SPEC HOSE (FIBER BRAID) GPM LPM FEET METERS INCH MM 5 to 8 19 to 30 To 50 To 15 Both 1/2 13 SAE 100R R7-8 5 to 8 19 to to 30 Both 5/8 16 SAE 100R2-10 SAE 100R to 8 19 to to 90 Pressure Return 5/8 3/ SAE 100R2-10 SAE 100R1-12 SAE 100R8-10 SAE 100R to to 45 To 50 To 15 Both 5/8 16 SAE 100R2-10 SAE 100R to to to 30 Pressure Return 5/8 3/ SAE 100R2-10 SAE 100R3-12 SAE 100R8-10 SAE 100R to to to 60 Pressure Return 3/ SAE 100R2-12 SAE 100R1-16 SAE 100R8-12 SAE 100R7-16 FOR SINGLE CIRCUIT FLOWS UP TO 10 GPM plumb hose and tool as illustrated in fig. 1. Numbers are represented below as paragraph numbers. 1. H.T.M.A. 3/8-inch Male Quick Acting Coupler with ½-inch NPT thread. 2. H.T.M.A. 3/8-inch Female Quick Acting Coupler with ½-inch NPT thread. At the tool this may be H.T.M.A. 3/8-inch Female Quick Acting Coupler with 3/8-inch NPT thread. 3. H.T.M.A. 3/8-INCH Female Quick Acting Coupler with ½-inch NPT thread. 4. H.T.M.A. 3/8-inch Male Quick Acting Coupler with ½-inch NPT thread. At the tool this may be 3/8-inch Male Quick Acting Coupler with 3/8-inch NPT thread. A. Refer to Table 2.6A for hose recommendations B. Use adapters with threads that match tool port.

8 2.5 Hydraulic Fluid Recommendation Inspect hose for cuts, crushing, leaks or abrasion which maybe a safety hazard or reduce fluid flows. The following fluids work well over a Wide temperature range at startup, Allow moisture to settle out, and resist Biological growth likely in cool operating Hydraulic circuits. These fluids are recommended by PortaCo Inc. Other that meets or exceeds the specifications of these fluids may also be used. Type Hydraulic fluid Chevron Clarity AW Exxon Univis J 32 Mobil D.T.E. 13 M Gulf Harmony AW-HVI Shell Tellus T 32 Texaco Rando HDZ 32 Union Unax AW-WR-32 Amsoil AWH Sunvis Low Pour H/032-product code Hydraulic fluid requirements: a) Viscosity (fluid Thickness) USA Metric 50 F 450 SSU Max 10C 95 Centistokes 100 F SSU 38C C.S. 140 F 85 SSU Min. 60 C 16.5 C.S, Min Pour Point- 10 F/-23 C Minimum (for cold startup) Viscosity Index- (ASTM D 2220) 140 Minimum Demulsibility- (ASTM D- 1401) 30 Minutes Maximum Flash Point- (ASTM D-92) 340 F/171 C Minimum Rust Inhibition- (ASTM D-665 A & B) Pass Oxidation- (ASTM D943) 1000 Hours Minimum Pump Wear Test- (ASTM D2882) 60mg Maximum 2.6 Tool Connecting Procedures Stop the engine before connecting the tool and, or hoses to the power unit, and when switching hoses or tools. Turn the hydraulic on/off valve to the off position before starting the engine. Make sure all hoses are connected for correct flow direction to and from the tool being used. When routing hose in the work area, position them where personnel will not be at risk of tripping over them or where vehicles will not run over the hoses. Do not lay hose over sharp objects. WARNING: PRESSURIZED FLUID ESCAPING FROM A DAMAGED HOSE CAN PENETRATE THE SKIN AND BE INJECTED IN THE BODY CAUSING INJURY OR DEATH. CAUTION: DO NOT PULL ON HOSES TO DRAG POWER UNIT. 2.7 Work Area Safety Precautions - Never operate the tool when you are tired, angry, emotionally disturbed, or under the influence of alcohol, drugs, medications, or anything that could affect your vision, alertness, coordination or judgment.

9 - 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. - Do not allow others to be near the tool when starting it or while operating. Keep bystanders and animals out of the work area. - Always wear safety goggles, ear, leg, and head protection devices, safety footwear, and snug fitting clothes. - Do not operate the tool near energized transmission lines. - Do not overreach. Maintain proper footing and balance at all times. - Be sure to keep hands and other parts clear and free from all moving parts. hydraulic circuit on your power unit. - Check that hydraulic couplers are secure before activating the circuit. - Keep handles clean and dry. - Disconnect tool from hydraulic source before inspection or cleaning. - Only a properly trained person should perform any maintenance, service, and or repairs to a tool. - Never operate a tool that is damaged, improperly adjusted, or not completely and securely assembled. - Do not operate the tool until you have a clear work area and a secure balance. - Never carry or pick this tool up by the hydraulic hose. - Always connect hydraulic hoses to the tool before activating the SAFETY REGULATION Enter below any local or other safety regulations required for the operator to follow. Make sure the operator and maintenance personnel have knowledge of these regulations.

10 3.0 Operating Instruction 3.1 Description of Tool The PortaCo, Inc. straight handle grinder, model GH O is used to remove excess weld from the rail, and to remove rust. The straight handle grinder requires a flow of 10Gpm (40 LPM) at 2000psi (138 Bar) for best performance. Use the tool on an open center hydraulic system only with a maximum pressure of 2150psi (148.3 Bar) Use only grinding wheel stones that are 8 diameter by 1 thick with a 5/8 diameter arbor with a minimum rpm rating of 3300rpm. 3.2 Controls and Graphics The following decals are placed on the tool to aid in its operation and maintenance. The operator should locate and understand them before using this power tool. On the tools stone guard there is a CAUTION decal that specifies that the tool is rated for flow of 10 GPM/ 40 LPM and pressure of 2000 PSI / 150 BAR do not exceed these flow / pressure rating. Also on the decal is a few written warnings such as improper use may cause severe injury, read and understand operators manual before operating tool, keep all guards in place, during operation always wear gloves, safe clothing and footwear along with approved safety protection for ears, eyes, and head, do not use damaged wheels, inspect wheel guard and fasteners for damage after any wheel failure. (Figure 3.2A) (Figure 3.2D arrow A) Figure 3.2A On the frame of the tool is a serial # decal. This decal has the serial number as well as the model number of the unit. Each unit has its own unique serial number. It is important to keep this decal protected and kept legible. The serial number is needed when ordering replacement parts. (Figure 3.2B) Figure 3.2B A CAUTION sticker is placed on the tools frame that has a few written warning such as use only wheels which meet the requirements of the tool s rating, do not exceed the tool s

11 maximum flow or pressure, use on open center system only, correctly connect hoses to tool in and out ports, improper handling, use, or maintenance of tool could result in a leak, burst or other tool failure, contact at a leak or burst can cause oil injection into the body, failure to observe these precautions can result in serious personal injury, read and understand the instructions in the operators manual before using this tool. (Figure 3.2C) (Figure 3.2D arrow B) rotating (Fig 3.3B arrow A). Remove old stone and place new stone on shaft. Place backup on outside of stone and tighten nut. Attach end plate back into place. Figure 3.3A A Figure 3.2C A Figure 3.2D 3.3 Before Operating STONE INSTALLATION ***THOROUGHLY INSPECT WHEEL PRIOR TO INSTALLATION! Remove the three bolts holding on the end plate (Fig 3.3A). Remove nut and backup. When removing nut, press and hold the shaft locking pin to keep from B Figure 3.3B Use blotters between the stone and backups. The blotters should be made from highly compressible material and should not be more than.025 inches thick. Check that the backup is pressed all the way on the spindle shaft. NOTE: the square on the spindle should slide into the square in the back of the backup. After a new stone is installed, run the grinder at full speed for one minute before grinding. 3.4 Connecting Hoses

12 WARNING: ALWAYS STOP THE HYDRAULIC POWER SOURCE FLOW AND DEPRESSURIZE THE SYSTEM BEFORE CONNECTING A TOOL. FAILURE TO COMPLY COULD RESULT IN PRESSURIZED FLUID PENETRATING THE SKIN AND INJECTED INTO THE BODY CAUSING INJURY OR DEATH. Wipe quick couplers with a clean lint free cloth before connecting them. 1. Stop the hydraulic power source. 2. Depressurize the system. 3. Allow system and hydraulic fluid to cool if too hot to handle. 4. Securely connect the return (tank R ) hose from the power source to the tool. 5. Securely connect the supply (pressure P ) hose from the power source to the tool When connecting hoses from power source to the tool. It is recommended that you connect the return hoses first and disconnect last to minimize or avoid trapping pressure within the tool. When connecting the quick couplers, the flow should run from male coupler to the female coupler. The female coupler on the tool is the inlet. Quick couplers are marked with a flow direction arrow. Turn on the hydraulic circuit at your power source. CAUTION: DO NOT PULL ON HOSES TO DRAG POWER TOOL. NOTE: When possible, connect the free ends of uncoupled hoses to prevent build up in the hoses. The sun can also increase pressure in the hoses and make connecting them difficult. 3.5 Operating Instructions Grip the handles firmly with both hands. Pull down with thumb on the safety lock and draw the trigger to the handle to start the grinder. When starting the tool hold it off of all surfaces. Start grinding with the tool running. When finished, release trigger and allow stone to stop turning and the trigger is in the locked position before placing the tool on any surface. 3.6 Disconnecting Hoses: 1. Stop the hydraulic power source. 2. Depressurize the system 3. Disconnect the supply (pressure P ) hose to the power source (pressure port) than from the tool ( IN ) port). 4. Disconnect the return (tank) hose to the hydraulic power source (return port) than from the tool ( OUT port). 5. To prevent contamination, always install dust caps over the hydraulic ports of the tool when disconnected. WARNING: IF INJURY RESULTS FROM ESCAPING HYDRAULIC FLUID, SEEK IMMEDIATE MEDICAL ATTENTION, SERIOUS

13 BODILY INJURY MAY OCCUR IF PROPER MEDICAL ATTENTION IS NOT ADMINISTERED IMMEDIATELY. WARNING: DO NOT ATTEMPT TO LOCATE HYDRAULIC LEAKS BY FEELING AROUND HOSES AND FITTING WITH HANDS. PIN HOLE LEAKS CAN PENETRATE THE SKIN. 3.7 Cold Weather Operation Hydraulic fluids are thicker in cold weather; therefore, run the engine at low idle long enough to bring the fluid temperature up to minimum of 10 C/50 F or until the top of the hydraulic tank feels warm, before operating tool. 3.8 Storage Preparation Cover male and female quick connect couplers. Store in the upright position on a smooth, level surface. Secure tool to prevent it from being knocked over. For extended storage times, store in a cool dry environment which is not subjected to rapid temperature changes.

14 CAUTION: USE ONLY GENUIENE PortaCo Inc. PARTS OR EQUIVALENT. THE USE OF REPLACEMENT PARTS WHICH ARE NOT OF EQUIVALENT QUALITY MAY DAMAGE THE HYDRAULIC OWER UNIT. WARNING: UNAUTHORIZED MODIFICATIONS TO THE TOOL MAY IMPAIR THE FUNCTION AND/OR SAFETY AND IMPAIR MACHINE LIFE. USE ONLY APPROVED SERVICE PARTS OR ACCESSORIES. 4.0 Maintenance instruction 4.1 Assembly View and Parts List PARTS LIST GH O ITEM P/N DESCRIPTION QTY OSP NUT 1/4nc OOP LOCK WASHER 3/ OOP LOCK WASHER 1/ OOP WASHER ¼ FLAT OOP PLUG ¼ npt HEX OOP SCREW OOP BOLT ¼ NC X 1-3/ OOP BOLT ¼ NC X 1/ OOP FITTING OOP BOLT 3/8 NC X 3/ OOP BOLT 3/8 NC X OOP COVER COUPLER OOP VALVE OOP PLUG 1/16 NPT ALLEN OOP COVER COUPLER OOP COUPLER MALE OOP COUPLER FEMALE OOP SPRING RETURN OOP PIN STOP OOP PIN SPRING OOW TRIGGER VALVE OOD TRIGGER SAFETY STOP OOP BEARING OOD ORIFACE OOP BOLT SHOULDER 5/16-1/4NC X 1-1/4 1

15 OOD SPACER SPOOL STOP OOP SPRING OOD PIN SPINDLE LOCK OOP SPRING OOP 3197-OOP PAD GRIP HANDLE COVER GRIP OOD CLEVIS OOW SPACER MOUNT OOD SPACER OOW FRAME HANDLE OOW HANDLE FRONT OOD PLATE GUARD OOD PLATE MOTOR MOUNTING OOP MOTOR (GH O) 3499-OOP MOTOR (GH ) OOD SPINDLE LEFT HAND THREAD (GH O) 3500-OOD SPINDLE RIGHT HAND THREAD (GH ) OOP NUT 5/8 NC LEFT HAND THREAD (GH O) 3017-OOP NUT 5/8 RIGHT HAND THREAD (GH ) OOD FLANGE DRIVE OOD FLANGE OOD MANIFOLD (GH O) 3501-OOD MANIFOLD (GH ) OOD SPOOL VALVE OOP O-RING OOP BACK UP OOD GRAPHIC SET OOD ORIFACE OOP FITTING 1/8 ALLEN PLUG OOD ¼-20 X 2.50 THREADED ROD OOP ¼ NC NUT OOP WIPER OOW STOP SPOOL OOP BOLT #10-24 X ½ SHCS OOP WASHER LOCK # OOP SET SCREW ¼ X 3/ OOP SET SCREW ¼ X 1/ BOLT MANIFOLD MNT 4 61 WASHER LOCK MANIFOLD MNT OOP BOLT 3/8NC X ¾ BUTTON HEAD 4

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17 4.2 Graphic Set Complete ( D) D D D D

18 4.3 Care Requirements Maintenance CLEANING AND MAINTENANCE RECOMMENDATIONS wipe all external surfaces after each use with a clean, lint free cloth to remove surface contaminants from the tool. Daily: 1. Wipe all tool surfaces, fittings, and coupling free of grease, dirt, and foreign materials. WARNING: DO NOT ATTEMPT TO LOCATE HYDRAULIC LEAKS BY FEELING AROUND HOSES AND FITTINGS WITH HANDS. PINHOLE LEAKS CAN PENETRATE THE SKIN. 2. Inspect the tool for signs of leaks and worn, and/or damage couplers. Replace if necessary. 3. To prevent contamination, always install dust caps over the hydraulic ports when disconnected. NOTE: Do not attempt to repair this product. Only properly trained person should perform any maintenance, service, and or repair to a tool. COMPLETE DISASSEMBLY OF THE TOOL IS NOT RECOMMENDED. RETURN TO PORTACO, INC. FOR REPAIRS. 4.4 Grinding Wheel Care Wheel Guard Inspect the wheel guard and fastener for damage. Repair any damage before using the tool. DO NOT OPERATE TOOL WITHOUT THE WHEEL GUARD! Wheel Backups Inspect the backup hole and flange before installation. The backup should be free of burrs and the bearing surfaces are flat and run true when mounted on the drive spindle. Check the drive spindle threads for damage. Wheel Inspection Prior to mounting, all wheels will be visually inspected by the operator for damage and cracks. DO NOT USE DAMAGED OR CRACKED TOOL WHEELS! The ring test may be used to check for cracks in the wheel which are not visible to the naked eye. To perform the test, suspend the wheel from the hole on a small pin or finger. Tap the wheel gently with a non-metallic implement such as a screwdriver handle. The best spot to tap is about 45 either side of the vertical center line 1 or 2 from the periphery. An undamaged wheel will give a clear tone. If cracked there will be dead sound instead. Check that the surface of the blotters and backups are free of dirt and other foreign contaminants. Use only wheels which meet or exceed the requirements of the tool

19 Care of abrasive wheels All abrasive wheels are breakable and therefore care should be exercised in handling and storage to prevent damage. All abrasive wheels should be stored in a dry area and not be subjected to exposure to water or other solvents. Also avoid freezing temperatures or humidity conditions which cause condensation on the wheels. Thin organic bonded wheels, (Rail saw blades or Slotting discs used for cutting), should be laid flat on a flat surface of steel or similar rigid material away from excessive heat, moisture, and other liquids. If thin wheels are supplied with blotters attached, suitable separators should be used to preserve flatness. Wheels used on cutoff saw carried on emergency vehicles should be removed after use and discarded or carefully stored as described in this section Wheel breakage If a wheel breaks during use, the operator should investigate to determine and correct the cause. If the operator cannot determine the cause, the wheel manufacturer should be consulted. Wheels designed for use with hand held portable tools are reinforced and specifically manufactured for this application. They are extremely tough and difficult to break under normal use.

20 4.5 Trouble Shooting The following chart can be used as a guide to correct any problem you may experience with the tool. To determine the problem in operation of the profile grinder always check that the hydraulic power source is supplying the correct hydraulic flow and pressure to the tool as listed in the tale. Be sure you are using an accurate flow meter. Check the flow with the hydraulic fluid temperature at least 80 F/27 C. NOTE: 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 systems. PROBLEM CAUSE REMEDY Tool will not run. Power source Check power source flows and pressure (8-10 gpm/30-38 lpm at psi bar). Coupler or hoses Check for/remove obstruction. Mechanical failure Disassemble tool and check for damage. Tool runs backwards Pressure and return reversed Correct hose connection or flow direction. Motor shaft rotates clockwise as viewed from the end of the shaft. Trigger (ON/OFF) hard to draw in. Saw cuts too slow Back pressure too high Pressure and return reversed Insufficient fluid flow or low relief valve setting Should not exceed 250 psi/17 bar at gpm/38 lpm. Correct for proper flow direction. Adjust flow to proper gpm. For best performance adjust relief valve to psi/ bar. NOTE: After reviewing trouble shooting chart and still unable to determine problem call the service department at PortaCo Inc. ( ) for assistance.

21 4.6 Technical Specifications Straight Handle Grinder Max Pressure Max Flow Length Width Height Weight 2000 psi/ 150 bar 10 gpm/ 40 lpm 21.0 in/ cm 10.5 in/ cm 12.0 in/ cm 16-lbs/ 7.26 kg Hydraulic Fluid Requirements Viscosity (Fluid Thickness) USA Metric 50 F 450 SSU Max 10C 95 Centistokes 100 F SSU 38C C.S. 140 F 85 SSU Min. 60 C 16.5 C.S, Min Pour Point- 10 F/-23 C Minimum (for cold startup) Viscosity Index- (ASTM D 2220) 140 Minimum Demulsibility- (ASTM D- 1401) 30 Minutes Maximum Flash Point- (ASTM D-92) 340 F/171 C Minimum Rust Inhibition- (ASTM D-665 A & B) Pass Oxidation- (ASTM D943) 1000 Hours Minimum Pump Wear Test- (ASTM D2882) 60mg Maximum Recommended Hydraulic Fluids Type Hydraulic fluid Chevron Clarity AW Exxon Univis J 32 Mobil D.T.E. 13 M Gulf Harmony AW-HVI Shell Tellus T 32 Texaco Rando HDZ 32 Union Unax AW-WR-32 Amsoil AWH Sunvis Low Pour H/032-product code 19300

22 SERVICE AND REPAIR NOTES