GE manual Vertical Drilling Motor Type GE752, Contents

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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.

Verify numbers for parts, tools, or material by using the Renewal Parts or Tool Catalogs, or contact your General Electric repre-

sentative for assistance.

Do not order from this publication.

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Contents Vertical Drilling Motor Type GE752 ContentsIntroduction General DescriptionGEK±91584D, Vertical Drilling Motor, Type GE752 Model Differences Vertical Drilling Motor, Type GE752, GEK±91584DData Contd Model DifferencesCarbon Brushes Data ContdPole Bore Diameter measured at center of pole Motors Min Max Motor Ratings Continuous Max. HP Shunt UP Grounding Instructions Special Tools EquipmentOverhaul Grounding Procedures FigLubrication Grease Tubes and Pipe PlugsCovers, Seals, Latches Inspection MonthlyBrushholders Fig Brush Spring Pressure Brushholder SleevesCommutator BrushesCreepage Band Flash RingBrushholder Replacement Basic Repairs Brush ReplacementSEMI±ANNUALLY Brushholder Clearance Adjustment InstallationCommutator Resurfacing Hand Stoning Procedure Sanding ProcedureFixture Grinding Grinder InstallationCommutator GRINDER. E±18249 ±19771A GrindingAir Curing Commutator Testing Before DisassemblyBasic Overhaul Megohmmeter Test DisassemblyBar±To±Bar Resistance Test Armature Removal From FrameCOMMUTATOR±END Bearing Pilot Longitudinal D732922 CHG. N. E±28621D Models See , Description Puller Tools 41D731569 CHG . E±14383C Puller TOOLS. E±18155A Models US1, AUT Longitudinal D735357, CHG. A. E±37949B Models See Table Steam Cleaning CleaningAnti±Friction Bearings/Shaft Tapers/Bearing Fits Vapor DegreasingBearing Inspection ArmatureArmature Shaft Inspection CommutatorMotor Frame Armature Insulation 41D731545 CHG. F. E±18156A See Note Lubrication of Bolts BrushholdersConnection Diagram 493A210 CHG . E±39092B Rewinding Armature Creepage Band ReplacementRiser Width DiameterCommutator Tightening ProcedureHydraulic Press Preferred Method Torque Wrench Acceptable MethodCommutator Resurfacing Spin Seasoning Commutator Assembled On ArmatureTo Change Motor Direction TurningConnection Diagram 41A330278, CHG . E±38055B Connection Diagram 41A330179, CHG. A. E±37950A ±4270B RakingTest After Repair Armature High Potential Test Resistance MeasurementUsed Armature Rewound ArmatureCoil Installation ReplacementProcedure for New Coil±Pole Assembly Motor Frame Field CoilCoiled Frame Assembly 41D732353 CHG. N. E±39094A Models See , Coiled Frame Assembly 41D732345 CHG. V. E±39095A BOX Ground A1 and A2 View AT E Cables with P65 Coiled Frame Assembly 41D735440, CHG. A. E±38056B Description Magnet Frame Coiled Frame Assembly 41D735343, CHG. C. E±37951C Hardened Washer 1 1/4 Gas Torch Brazing Brazing Coil TerminalsTest After Repair Flood Dipping Coiled FrameCoiled Frame Without Armature Balancing Armature ReassemblyVarnish Treatment Armature Drive±End Bearing Figs , 35, 36 Armature BearingsCommutator±End Bearing All Models Except US2, UP6, AUT2 and AUP5DRIVE±END Bearing ASSEMBLY. E±18166E Models US2, UP6, AUT2 and AUP5 DRIVE±END Bearing ASSEMBLY. E±39301DRIVE±END Bearing Assembly 41B537821, CHG. B. E±37952B Models UP and AUP Armature Assembly Into FrameCOMMUTATOR±END Bearing Assembly 41B532745 CHG. F. E±39090A COMMUTATOR-END Bearing Assembly 41B538068 CHG . E-39300 Checking Internal Clearance Brush Installation Hub Fitting HUB MountingHub Mounting Testing Series Machines Testing After OverhaulModels 5GE752AUP, AUT Motor Operation Testing Shunt Machines Models 5GE752UP and USVentilated 2300 cfm at 7.6 in. H2O at Commutator Chamber UnventilatedRemoving Armature Locking Arrangement Cleaning and SlushingLocking the Armature For Shipment ShippingProtection SkiddingArmatures Preparation of BOXStorage Placing Into Storage Boxing the ArmatureShipping BOX with Armature Less COVER. E±3784 Removing from StorageVertical Drilling Motor, Type GE752, GEK±91584D OUTLINE, UP and AUP 41E903631 CHG. H. E±28755B Hole Grease Vent Tube Grease Tube Holes REF OUTLINE, US1, AUT 41E903745, CHG. A. E±37954B ºDº ºBº Vertical Drilling Motor, Type GE752, GEK±91584D GE Transportation Systems
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