NPK PH4 - Page 3

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CONTENTS
ROUTINE INSPECTION AND MAINTENANCE ............................................................ 46
WEEKLY INSPECTION ................................................................................................ 47
TOOLS .......................................................................................................................... 48
STANDARD TOOLS ................................................................................................. 48
ACCESSORY TOOLS .............................................................................................. 48
TOOL IDENTIFICATION ........................................................................................... 49
CHANGING THE TOOL ............................................................................................ 50
MAXIMUM TOOL TO TOOL BUSHING CLEARANCE ............................................. 52
TOOL INSPECTION ................................................................................................. 54
CHISEL TOOL RESHARPENING ............................................................................. 55
STANDARD LENGTH FOR NPK TOOLS ................................................................. 56
TOOL RETAINING PIN INSPECTION ...................................................................... 57
GAS CHARGE .............................................................................................................. 59
NITROGEN GAS PRESSURE .................................................................................. 59
GAS CHARGING KIT ............................................................................................... 60
CHECKING THE GAS PRESSURE .......................................................................... 61
CHARGING THE HAMMER ...................................................................................... 63
DISCHARGING THE GAS PRESSURE ................................................................... 64
STORAGE OF HYDRAULIC HAMMER ........................................................................ 65
WARRANTY REGISTRATION FOR NEW UNITS ........................................................ 66
TOOL WARRANTY ....................................................................................................... 67
WARRANTY STATEMENTS ......................................................................................... 69
NOTES AND RECORDS .............................................................................................. 73