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NPK GH9 - User Manual

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HYDRAULIC HAMMER
OPERATORS MANUAL
GH SERIES HAMMERS
GH7 GH18
GH9 GH23
GH10 GH30
GH12 GH40
GH15 GH50
© Copyright 2014 NPK Construction Equipment, Inc. www.npkce.com H050-9630G GH7 - GH50
Hyd Ham Operators Manual 4-14
"Use Genuine NPK Parts”
7550 Independence Drive
Walton Hills, OH 44146-5541
Phone (440) 232-7900
Toll-free (800) 225-4379
Fax (440) 232-6294

Table of Contents

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Summary

NPK Hydraulic Hammer Safety

Safety Warning System

Defines DANGER, WARNING, CAUTION, and ATTENTION notice types used in manuals.

Safety Decals and Labels

Details mandatory decals for operator safety and their placement.

Operator Safety Precautions

Key safety rules and warnings for operating the hydraulic hammer.

Introduction to NPK Hydraulic Hammers

NPK Hydraulic Hammer Overview

Provides context on NPK's reputation and product quality in hydraulic hammers.

Carrier Machine Compatibility

Carrier Weight Guidelines

Specifies recommended carrier weight ranges for each NPK hammer model.

Hammer Specifications

Technical Specifications Table

Lists key performance, dimensional, and operating data for each hammer model.

Hammer Serial Number Location

Serial Number Identification

Illustrates the location of the serial number on the hammer body.

Hydraulic Installation

Hammer Lines and Connections

Details the routing and connection of hydraulic lines for the hammer.

Hammer Control Valve Systems

Explains the two types of control systems for hammer operation.

Prevention of Contamination

Emphasizes measures to prevent contamination in the hydraulic system.

Hydraulic Quick Disconnects

Recommends NPK approved disconnects and outlines precautions.

Mounting Installation

Mounting Kit Components

Lists parts included in NPK mounting kits for carrier adaptation.

Mounting and Removal Procedure

Details steps for attaching and detaching the hammer from the carrier.

Lubrication

Greasing Procedure (Manual)

Step-by-step guide for manual greasing of hammers without autolube systems.

Correct Grease and Intervals

Specifies recommended grease types and greasing frequencies for optimal performance.

NPK Hammer Grease Types

Lists NPK-formulated greases and their specific applications and temperature ranges.

Autolube Systems

Explains the benefits and function of automatic greasing systems for wear reduction.

Autolube Grease Line Pre-filling

Details the mandatory procedure for priming the autolube grease line before use.

Lubricant Terms and Definitions

Provides a glossary of common lubrication-related terms and their meanings.

Start-up Operation

New, Rebuilt, or Inactive Hammers

Specific procedures for initial start-up of new, rebuilt, or inactive hammers.

Pre-Start Checks and Warm-up

Outlines essential inspections and warm-up procedures before operating the hammer.

Operation

Safe Operating Instructions

Critical warnings and guidelines for safe hydraulic hammer operation.

Operating Techniques and Precautions

Best practices for efficient and safe hydraulic hammer use.

Impact Energy Transmission Through Tools

Impact Force Transmission

Explains how kinetic energy is delivered as impact force through the tool.

Stress Waves at Tool End

Describes how stress waves behave during material breakage.

Routine Inspection and Maintenance

Visual Inspection Checklist

Key areas to check during routine visual inspections for potential problems.

Demolition Tool Lubrication

Importance and procedure for lubricating the tool and bushing contact area.

Tool and Tool Bushing Wear Check

Guidelines for inspecting and replacing worn tools and bushings.

Weekly Inspection

Weekly Maintenance Checks

Specific items to inspect on a weekly basis for proper hammer maintenance.

Types and Applications of Tool

Standard Demolition Tools

Details on Chisel, Moil, and Blunt tool types and their applications.

Optional Demolition Tools

Information on Core type demolition tools and their uses.

Tool Identification

Identifying Tool Numbers

Explains how to identify tools using stamped numbers for warranty correspondence.

Tools

Changing the Hammer Tool

Step-by-step instructions for removing and installing demolition tools.

Maximum Tool to Bushing Clearance

Procedure to measure clearance and determine tool/bushing replacement needs.

Chisel Tool Resharpening

Guidelines and dimensions for resharpening worn chisel tools.

Standard Tool Lengths

Specifications for new tool dimensions, including length and diameter.

Tool Retaining Pin Inspection

How to inspect the tool retaining pin for wear and damage.

Tool Inspection

Procedures for inspecting tools for deformation and chipping.

Tool Warranty

Standard Tool Warranty (30 days)

Details the warranty period and coverage for demolition and accessory tools.

NPK Responsibility and User Obligations

Outlines NPK's role and customer responsibilities for warranty claims.

Warranty Exclusions and Limitations

Lists conditions that void warranties or are not covered by warranty terms.

Tool Breakage

Breakage Due to Bending Moment

Explains causes and prevention of tool breakage from excessive bending.

Breakage Due to Worn Bushings

Details how worn bushings cause tool breakage and preventative measures.

Chipping in Retaining Pin Slot

Describes and provides preventative measures for pin slot chipping.

Deformation of Retaining Pin Slot Sides

Explains causes and prevention of deformation on retaining pin slot sides.

Deformation of the Tool Tip

Discusses tool tip deformation due to overheating and its prevention.

Chipping of Moil Point Tool Tip

Explains causes and prevention of chipping on moil point tool tips.

Chipping of Chisel Tool Tip

Details causes and prevention of chipping on chisel tool tips.

Temperature Related Tool Problems

Covers tool issues arising from low and high temperature environments.

Tool Breakage Due to Corrosion

Explains how corrosion leads to breakage and preventative measures.

Tool Breakage Due to Defective Material

Covers warranty coverage for material defects causing tool breakage.

Torque Values for Hammer Fasteners

Socket Head Cap Screw Torque

Provides torque specifications for various Socket Head Cap Screws (SHCS).

Hex Head Bolt Torque

Lists torque values for hex head bolts used in hammer assembly.

Hammer Bracket Torque

Specific torque values for hammer bracket bolts, including reduced values.

Gas Charge

Nitrogen Gas Pressure Specifications

Details required nitrogen gas pressure at ambient and operating temperatures.

Gas Charging Kit Components

Lists parts included in the NPK gas charging kit for pressure adjustments.

Checking the Gas Pressure

Step-by-step procedure for measuring nitrogen gas pressure.

Charging the Hammer

Detailed procedure for charging the hydraulic hammer with nitrogen gas.

Discharging the Gas Pressure

Step-by-step procedure for safely releasing nitrogen gas pressure.

Warranty Registration for New Units

Warranty Registration Methods

Instructions on how to register new units for warranty coverage via mail, fax, or online.

Storage of Hydraulic Hammer

Storage Procedures

Guidelines for storing the hammer for short and long-term periods.

Warranty Statements

Base, Extended, and Super Extended Warranties

Details the different warranty periods and coverage levels for hammers.

Warranty Exclusions and Limitations

Lists conditions that void warranties or are not covered by warranty terms.

Replacement Parts Warranty

Specifies the warranty terms and coverage for NPK replacement parts.

Autolube System Warranty

Details warranty coverage for NPK Autolube systems.

Tool and Accessory Warranty

Covers warranty terms for NPK demolition and accessory tools.

Notes and Records

Record Keeping Fields

Blank fields for recording important operational, installation, and maintenance data.

NPK GH9 Specifications

General IconGeneral
BrandNPK
ModelGH9
CategoryTools
LanguageEnglish

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