NPK M20C, Instruction Manual, Page: 3 / 152

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CONTENTS
K JAW BLADE SET UP PROCEDURE ...................................................................... 66
COMPONENT DESCRIPTION ................................................................................... 67
K JAW BLADE MAINTENANCE AND ADJUSTMENT ................................................ 68
PIERCING TIP MAINTENANCE AND REPLACEMENT ............................................. 73
MAINTENANCE .......................................................................................................... 73
TAPER LINER FOR M SERIES PROCESSOR “K” JAW ............................................ 74
BUILD-UP OF THE PIERCING TIP ............................................................................ 75
REPLACING THE PIERCING TIP .............................................................................. 75
JOINING AND BUILD-UP ........................................................................................... 76
DETERMINING REPLACEMENT OR BUILD UP ....................................................... 77
JAW INSPECTION AND MAINTENANCE ........................................................................ 80
JAW INSPECTION: S, C, and G JAWS ..................................................................... 80
WEEKLY INSPECTION ....................................................................................... 80
JAW PROFILES: S, C, AND G JAWS ....................................................................... 80
JAW BUILD-UP AND HARDFACING (M38S, M28S, and M20S) ............................... 80
JAW BUILD-UP AND HARDFACING (M38C, M28C, and M20C) .............................. 81
TEETH REPLACEMENT ............................................................................................ 82
REPLACEABLE TOOTH PLATES – G JAWS ............................................................ 83
JAW AND TOOTH REBUILD PROCEDURE: S, C, and G JAWS ............................. 83
JAW CONTACT AREAS ............................................................................................. 86
S, C, and G JAW CONTACT AREAS................................................................... 86
HARDFACING: K JAWS ............................................................................................ 87
FRAME MAINTENANCE – REPAIR OF MAIN FRAME .................................................... 88
ROUTINE WELD REPAIR .......................................................................................... 88
CYLINDER INSPECTION AND MAINTENANCE .............................................................. 90
BOOSTER CYLINDER ............................................................................................... 90
DISASSEMBLY .................................................................................................... 90
INSPECTING AND CLEANING CYLINDER COMPONENTS ..................................... 93
REPAIR TOOLS AND EQUIPMENT ........................................................................... 95
ASSEMBLY ................................................................................................................. 95
SLEWING RING INSPECTION AND MAINTENANCE ..................................................... 102
MEASURING MAXIMUM AXIAL MOVEMENT............................................................ 102
ROTATION BEARING OUTER DIRT SEAL REPLACEMENT .................................... 103
SWIVEL MANIFOLD MAINTENANCE .............................................................................. 104
SWIVEL MANIFOLD ASSEMBLY............................................................................... 104
LEAKAGE OF THE SEALS......................................................................................... 104
TESTING THE SWIVEL SEALS FOR INTERNAL LEAKAGE .................................... 105
REPLACEMENT OF THE SEALS IN THE SWIVEL ................................................... 106
JAW SET INTERCHANGE................................................................................................ 110
TOOL AND SUPPLIES ............................................................................................... 110
PROCEDURE FOR JAW SET INTERCHANGE ......................................................... 111
UNIT POSITIONING ................................................................................................... 111
DETACHMENT OF THE JAWS FROM THE CYLINDER SUB-ASSEMBLIES ........... 113
DETACHMENT OF THE JAW SET FROM THE MAIN FRAME ................................. 115
JAW SET REMOVAL .................................................................................................. 117
JAW SET STORAGE .................................................................................................. 118