NPK GH7 - Page 3

NPK
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CONTENTS
TOOL WARRANTY ..................................................................................................................................... 45
TOOL BREAKAGE ...................................................................................................................................... 47
TOOL BREAKAGE DUE TO EXCESSIVE BENDING MOMENT .......................................................... 47
CHARACTERISTICS OF THE BROKEN SECTION .............................................................................. 47
TOOL BREAKAGE DUE TO EXCESSIVE WEAR OF THE TOOL HOLDER BUSHINGS .................... 48
CHIPPING IN RETAINING PIN SLOT .................................................................................................... 50
DEFORMATION OF THE RETAINING PIN SLOT SIDES ..................................................................... 50
DEFORMATION OF THE TOOL TIP ..................................................................................................... 51
CHIPPING OF A MOIL POINT TOOL TIP .............................................................................................. 52
CHIPPING OF A CHISEL TOOL TIP ..................................................................................................... 52
TEMPERATURE RELATED TOOL PROBLEMS ................................................................................... 53
TOOL BREAKAGE DUE TO CORROSION ........................................................................................... 54
TOOL BREAKAGE DUE TO DEFECTIVE MATERIAL .......................................................................... 54
TORQUE VALUES FOR HAMMER FASTENERS ..................................................................................... 55
HAMMER BRACKET – GH7 THROUGH GH50 .................................................................................... 56
GAS CHARGE ............................................................................................................................................ 57
NITROGEN GAS PRESSURE ............................................................................................................... 57
GAS CHARGING KIT ............................................................................................................................. 57
CHECKING THE GAS PRESSURE ....................................................................................................... 58
CHARGING THE HAMMER ................................................................................................................... 60
DISCHARGING THE GAS PRESSURE ................................................................................................. 62
WARRANTY REGISTRATION FOR NEW UNITS ..................................................................................... 63
STORAGE OF HYDRAULIC HAMMER...................................................................................................... 64
WARRANTY STATEMENTS ...................................................................................................................... 65
NOTES AND RECORDS ............................................................................................................................ 69
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