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NPK NPH-3500 Instruction Manual

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PNEUMATIC HAMMER
INSTRUCTION MANUAL
NPH HAMMERS
NPH-3500
NPH-4500L
"Use Genuine NPK Parts"
7550 Independence Drive
Walton Hills, OH 44146-5541
Phone (440) 232-7900
Fax (440) 232-6294
© Copyright 2020 NPK Construction Equipment, Inc.
www.npkce.com
H000-9620- NPH3500,
NPH4500L Pneumatic Hammer Instr Manual 8-20

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Summary of Contents for NPK NPH-3500

  • Page 1 PNEUMATIC HAMMER INSTRUCTION MANUAL NPH HAMMERS NPH-3500 NPH-4500L “Use Genuine NPK Parts” 7550 Independence Drive Walton Hills, OH 44146-5541 Phone (440) 232-7900 Fax (440) 232-6294 © Copyright 2020 NPK Construction Equipment, Inc. www.npkce.com H000-9620- NPH3500, NPH4500L Pneumatic Hammer Instr Manual 8-20...

  • Page 2: Table Of Contents

    CONTENTS SAFETY .......................... 2 INTRODUCTION ......................4 BASIC OPERATING INSTRUCTIONS ................4 PRECAUTIONS FOR USING THE NPK PNEUMATIC HAMMER ........5 CARRIER MACHINE COMPATIBILITY ................6 HAMMER SPECIFICATIONS ..................7 STRUCTURE ........................8 STRUCTURAL DRAWING..................8 HAMMER SERIAL NUMBER LOCATION ............... 9 SERIAL NUMBER LOCATION (sn1) ................

  • Page 3: Safety

    WARNING and BASIC OPERATING INSTRUCTIONS decals are included with each NPK hammer and installation kit. Decals must be installed in the cab, visible to the operator while operating the hammer. STAY CLEAR and TOOL SHARPENING decals are installed on all NPK hammer models.
  • Page 4 See CARRIER MACHINE COMPATIBILITY section of the NPK instruction manual. 6. Do not make any alterations to the TOOL without authorization from NPK Engineering. 7. Use proper lifting equipment and tools when handling or servicing the HAMMER.

  • Page 5: Introduction

    For additional information or help with any problem encountered, please contact your NPK authorized dealer. Whenever repair or replacement of component parts is required, only NPK parts should be used. NPK is not responsible for failures resulting from substitution of parts not sold or approved by NPK. BASIC OPERATING INSTRUCTIONS •...

  • Page 6: Precautions For Using The Npk Pneumatic Hammer

    PRECAUTIONS FOR USING THE NPK PNEUMATIC HAMMER • Perform daily inspections. • Do not hammer continuously in the same position for more than 30 seconds. • Do not use the hammer to move material, pry material, or as a pick on material.

  • Page 7: Carrier Machine Compatibility

    Verify carrier stability with hammer before transport or operation. Mounting a PNEUMATIC HAMMER that is too small for the carrier machine can damage the PNEUMATIC HAMMER, cause tool breakage, and void Warranties. Please consult NPK Engineering for specific detailed information. CARRIER WEIGHT lbs. (kg) HAMMER...

  • Page 8: Hammer Specifications

    LENGTH W/O MODEL BLOWS diameter stroke weight CHISEL b.p.m. lbs (kg) (mm) (mm) (mm) 7.87 47.3 (116) (200) (25) NPH-3500 (1202) (130) 9.65 (245) (30) 54.8 NPH-4500L (1392) HAMMER NET WEIGHT MAX AIR HOSE MODEL WITH TOOL CONSUMPTION PRESSURE DIAMETER...

  • Page 9: Structure

    STRUCTURE STRUCTURAL DRAWING EXHAUST INLET MAIN BODY COLLAR TOOL HOLDER FITTING ELBOW RETAINING PIN UPPER BUSHING TOOL IMPACT RING PISTON PB60 FILTER ELEMENT ph11 INLET BUSHING VALVE VALVE CAP (UPPER) VALVE CAP (LOWER) COTTER PIN HEAD TIE ROD NUT (TOP) LOCK PLATE RUBBER PLUG WASHER...

  • Page 10: Hammer Serial Number Location

    HAMMER SERIAL NUMBER LOCATION SERIAL NUMBER LOCATION (sn1) - 9 -...

  • Page 11: Principle Of Operation

    PRINCIPLE OF OPERATION PISTON UP The compressed air from the inlet port flows through the head chamber #2 through port #1. It reaches the lower chamber #9 through ports #3, #4, #5, #6, #7, and #8, which makes the piston (N) go up. - 10 -...
  • Page 12 PRINCIPLE OF OPERATION PISTON UP-VALVE UP After the piston (N) opens up port #10, the compressed air of the lower chamber #9 goes into valve’s lower chamber #13 through ports #11 and #12, so the valve (ph3) goes up. - 11 -...
  • Page 13 PRINCIPLE OF OPERATION PISTON UP-VALVE UP The piston (N) and valve (ph3) go up when the piston opens lower chamber to exhaust port #14. Compressed air exhausts to the outside through port #14. - 12 -...
  • Page 14 PRINCIPLE OF OPERATION PISTON DOWN The compressed air of the lower chamber exhaust and compressed air is supplied to the upper chamber of the piston (N) through ports #3, #4, #5, and #15 so that the piston goes down. - 13 -...
  • Page 15 PRINCIPLE OF OPERATION PISTON DOWN – VALVE DOWN After the piston goes down, it opens the upper chamber to port #17. Compressed air of the upper chamber is supplied to the valve upper chamber #21 through ports #18, #19, and #20 so the valve goes down. Before the valve goes down completely, the piston (N) hits the tool (HH).

  • Page 16: Installation

    INSTALLATION bs10 CONTROL VALVE ds60 LINE UNIT PINS TOOL HAMMER BRACKET ph10 AIR HOSE ph12 COMPRESSOR EXHAUST PORT - 15 -...

  • Page 17: Operation

    OPERATION LUBRICATION Fill the oiler with oil before operation of the hammer. Lack of oil will cause premature component wear. During new hammer start-up, set the oiler knob to position 4 for the first 10 hours of operation. Oil flow numbers on the oiler knob must be aligned with the arrow on the body of the unit.

  • Page 18: Operating Procedure

    OPERATION OPERATING PROCEDURE a) Place tool on the material and apply down force to the hammer. b) Operate the hammer with tool in solid contact with the material. c) Shut off hammer immediately after breaking material. DOWN FORCE OPERATE STOP DO NOT USE THE HAMMER TOOL AS A PRY BAR - 17 -...
  • Page 19 OPERATION OPERATING PROCEDURE DO NOT USE THE HAMMER AS A HOIST - 18 -...

  • Page 20: Automatic Shut Off

    AUTOMATIC SHUT OFF The hammer is provided with a unique internal cushioning arrangement which absorbs energy released when blank hammering occurs. The exhaust port allows air to exit the main body which ensures the hammer from any damage caused by blank hammering. AIR CUSHION EXHAUST TOOL...

  • Page 21: Lubrication

    LUBRICATION NPK HAMMER GREASE NPK now offers hammer grease specially formulated to meet severe job requirements. The grease is available in two different temperature ranges - 350°F (177°C), 500°F (260°C). “Universal Plus” and “Super Duty” are lithium soap-based products that resist washout and contain NPK-10 additive for surface protection in friction affected areas.

  • Page 22: Lubricant Terms And Definitions

    LUBRICATION LUBRICANT TERMS AND DEFINITIONS TERM DEFINITION The ability of grease, gear lubricant or oil to cling to ADHESIVE metal. Used to help combat metal-to-metal contact, thus ANTI WEAR AGENTS reducing wear. The ability of grease, gear lube or oil to cling to itself, COHESIVE thus resisting tearing apart.
  • Page 23 LUBRICATION LUBRICANT TERMS AND DEFINITIONS TERM DEFINITION A container for keeping a supply of working fluid in a RESERVOIR hydraulic system. A quivering or trembling motion. VIBRATION Is the actual SAE weight of the product. Example motor VISCOSITY oils come in 10, 20, 30, 40, 50 and 15/40 SAE weight. The viscosity designation of a lubricant indicates its internal resistance to flow.

  • Page 24: Inspection And Maintenance

    1. FASTENERS Inspect all fasteners and retighten as necessary. HAMMER BRACKET BOLTS MODEL ft. lbs. (Nm) NPH-3500 (300) NPH-4500L (550) 2. WELDS Check welds for cracks, repair as necessary. 3. TOOL AND TOOL BUSHING WEAR Check the tool and tool bushing for damage, wear, or deformation on a weekly basis.

  • Page 25: Storage Of Pneumatic Hammer

    STORAGE OF PNEUMATIC HAMMER 1. For short term storage between jobs, place the hammer horizontal on wood blocks. Be sure the tool is liberally greased. Cover with a waterproof tarp. 2. If the hammer is not to be used for a long period of time, lubricate with the recommended oil to the nipple bushing and then work the hammer for about 1-2 seconds.
  • Page 26 SLEDGE HAMMER AND SLUG WRENCH Size according to hammer model. SMALL HAMMER AND BRASS PUNCH For removing the cotter pins. SMALL ADJUSTABLE WRENCH A sturdy work bench is recommended for the disassembly and assembly of an NPK PNEUMATIC HAMMER. - 25 -...

  • Page 27: Disassembly Procedure

    DISASSEMBLY PROCEDURE 1. Place the hammer assembly w/ bracket (DR) on wood blocks (t20). Make sure the hammer is stable. 2. Remove the bracket bolts, nuts, and washers. 3. Lift the hammer (KK) from the bracket (LL). Using a hoist, attach a chain or strap (t27) to the hammer and lift it out of the bracket (LL).
  • Page 28 DISASSEMBLY PROCEDURE 5. Remove the cotter pins (ph6) with a small hammer and brass punch, and then continue to remove the washers (U), plates (s8), and collars (AT). Loosen and remove the top nuts (R) and remove the head (ph7). HEAD (AIR HAMMER) COLLAR COTTER PIN...
  • Page 29 DISASSEMBLY PROCEDURE 7. Remove the tie rods (Q) by using an adjustable wrench while supporting the tool holder (C) with the lifting hook (t86). 8. Once the tie rods(Q) are removed, use a hoist to remove the tool holder (C) and cylinder spacer (J).

  • Page 30: Inspection Procedure

    PISTON, MAIN BODY HAMMER NAME DIAMETER NAME DIAMETER MODEL PART NO. PART NO. (mm) (mm) PISTON 4.5598 MAIN BODY 4.5688 (116) (116) NPH-3500 11014164 4.5582 11014149 4.574 (116) (116) PISTON 5.111 MAIN BODY 5.12 (130) (130) NPH-4500L 11013489 5.1094 11013745 5.1251...

  • Page 31: Reassembly Procedure

    REASSEMBLY PROCEDURE 1. After inspection, insert the piston (N) into the main body (A). 2. Re-install the cylinder spacer (J) into the main body (A). 3. Use a hoist to install the tool holder (C) back into position using a chain (t4) and a lifting hook (t86).
  • Page 32 MODEL ft lbs seize on top nuts. Install and torque (Nm) the top nuts (R). (Torque hammer, NPH-3500 (550) model specific.) NPH-4500L (950) 9. Install the 2 plates (s8). Note: Top nuts (R) must have the proper orientation for the 2 plates to fit properly.

  • Page 33: Troubleshooting

    TROUBLESHOOTING PROBLEM CAUSE CHECK REMEDY Compressor or Air Insufficient Air Supply Hose Adjust Air Pressure LOSS OF Hose Bending Air Hose Replace Air Hose POWER Filter Contamination Head Cap Remove Contamination Have the main body honed Clearance between the main body and piston. Main body and piston replace with oversized Usable limit is .4mm...

  • Page 34: Warranty Registration For New Units

    WARRANTY REGISTRATION FOR NEW UNITS Complete and send to NPK after installation or complete online at www.npkce.com Online warranty registration can be done by the dealer or the end user. The registration can be done in any of the following ways: 1.

  • Page 35: Tool Warranty

    • NPK RESPONSIBILITY NPK will, at its option, replace with a new or reconditioned tool, any warranted tool that fails by reason of defective material or workmanship, free of charge, delivered at a place of business of an NPK Dealer. Tool breakage is specifically covered ONLY for straight across breakage as shown at locations A.
  • Page 36 • • Installations not approved by NPK. Use of parts not sold by NPK. THE USE OF “WILL FIT” PARTS WILL VOID THE • WARRANTIES OF ANY AND ALL PARTS DAMAGED AS A RESULT OF THE FAILURE OF THE “WILL FIT” PARTS.

  • Page 37: Warranty Statements

    WARRANTY STATEMENTS - 36 -...
  • Page 38 WARRANTY STATEMENTS - 37 -...
  • Page 39 WARRANTY STATEMENTS - 38 -...

  • Page 40: Notes And Records

    NOTES AND RECORDS NPK HYDRAULIC HAMMER MODEL NUMBER _______________ SERIAL NUMBER _______________ NPK INSTALLATION KIT NUMBER __________________________ CARRIER MANUFACTURER MODEL NUMBER SERIES SERIAL NUMBER DATE OF INSTALLATION _________________ DATE OF 20 HOUR INSPECTION __________ WARRANTY REGISTRATION SENT ❑ - 39 -...
  • Page 41 © Copyright 2020 NPK Construction Equipment, Inc. www.npkce.com H000-9620- NPH3500, NPH4500L Pneumatic Hammer Instr Manual 8-20...

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Nph-4500l

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