GEK±91584D
VERTICAL DRILLING MOTOR
TYPE GE752
CONTENTS | CONTENTS (CONT'D) |
Page
INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 GENERAL DESCRIPTION . . . . . . . . . . . . . . . . . . . . 2 DATA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 SPECIAL TOOLS AND EQUIPMENT . . . . . . . . . . . 8 GROUNDING INSTRUCTIONS . . . . . . . . . . . . . . . . 8
GROUNDING PROCEDURES . . . . . . . . . . . . . . . 9
OVERHAUL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 LUBRICATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 GREASE TUBES AND PIPE PLUGS . . . . . . . . . 9
INSPECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 MONTHLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 SEMI±ANNUALLY . . . . . . . . . . . . . . . . . . . . . . . . . 13
BASIC REPAIRS . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 BRUSH REPLACEMENT . . . . . . . . . . . . . . . . . . . 13 BRUSHHOLDER REPLACEMENT . . . . . . . . . . 13
BRUSHHOLDER CLEARANCE ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . 14
COMMUTATOR RESURFACING . . . . . . . . . . . . 14
BASIC OVERHAUL . . . . . . . . . . . . . . . . . . . . . . . . . 19 TESTING BEFORE DISASSEMBLY . . . . . . . . . 19 TABLE 2. DRAWING REFERENCE . . . . . . . . . . 20 DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 CLEANING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
INSPECTION AND TEST OF
DISASSEMBLED MOTOR . . . . . . . . . . . . . . . . . . . 31 BEARING INSPECTION . . . . . . . . . . . . . . . . . . . 31 ARMATURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 COMMUTATOR . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 ARMATURE SHAFT INSPECTION . . . . . . . . . . 32 MOTOR FRAME . . . . . . . . . . . . . . . . . . . . . . . . . . 32 BRUSHHOLDERS . . . . . . . . . . . . . . . . . . . . . . . . . 35
REPAIR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 LUBRICATION OF BOLTS . . . . . . . . . . . . . . . . . 35
Revisions are indicated by margin bars.
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BRUSHHOLDER SLEEVE REPLACEMENT . . 36 ARMATURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
TABLE 3. STANDARD BOLT TORQUE VALUES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
TEST AFTER REPAIR (Armature) . . . . . . . . . . . 44
MOTOR FRAME FIELD COIL REPLACEMENT . . . . . . . . . . . . . . . . . . . . . . . . . 45
TEST AFTER REPAIR
(Coiled Frame Without Armature) . . . . . . . . . . 55
TABLE 4. VARNISH VISCOSITY CHART
FOR DIPPING COILED FRAME . . . . . . . . . . . . . 55 VARNISH TREATMENT (ARMATURE) . . . . . . . 56 BALANCING ARMATURE . . . . . . . . . . . . . . . . . . 56 REASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
BRUSHHOLDER CLEARANCE ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . 65
BRUSH INSTALLATION . . . . . . . . . . . . . . . . . . . . 65 HUB MOUNTING . . . . . . . . . . . . . . . . . . . . . . . . . 66
TESTING AFTER OVERHAUL . . . . . . . . . . . . . . . 67
TESTING SERIES MACHINES
(Models 5GE752AUP, AUT) . . . . . . . . . . . . . . . 67
TESTING SHUNT MACHINES
(Models 5GE752UP and US) . . . . . . . . . . . . . . 68
REMOVING ARMATURE
LOCKING ARRANGEMENT . . . . . . . . . . . . . . . . . . 69
LOCKING THE ARMATURE FOR SHIPMENT . . 69 SHIPPING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69 HANDLING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69 CLEANING AND SLUSHING . . . . . . . . . . . . . . . 69 SKIDDING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70 PROTECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70 ARMATURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70 PREPARATION OF BOX . . . . . . . . . . . . . . . . . . . 70 BOXING THE ARMATURE . . . . . . . . . . . . . . . . . 71
STORAGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71 PLACING INTO STORAGE . . . . . . . . . . . . . . . . . 71 REMOVING FROM STORAGE . . . . . . . . . . . . . 72
Copyright 1992, 1993, 2005 General Electric Company. All rights reserved. This copyrighted document may be reproduced free of charge by General Electric Company customers (OEM's) and their customers, if such reproduction is used exclusively in connection with equipment used in those customers' internal operations.
These instructions do not purport to cover all details or variations in equipment nor to provide for every possible contingency to be met in connection with installation, operation, or mainte- nance. Should further information be desired or should particular problems arise which are not covered sufficiently for the user's purposes, the matter should be referred to the General Electric Company. Any applicable Federal, State or local regulations or company safety or operating rules must take precedence over any instructions given in this material. GE has no obligation to keep the material up to date after the original publication.
THERE ARE NO WARRANTIES OF ACCURACY, MERCHANTABILITY OR FITNESS FOR PARTICULAR PURPOSE.
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