GE Comprehensive Guide on 752 Vertical Drilling Motor Operations

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		Vertical Drilling Motor, Type GE752, GEK±91584D

		NOTE FOR ARMATURE LOCKING ARRANGEMENT
ONE .25 PIPE PLUG±REPLACE	G	LOCATED ON COMMUTATOR END
ONE .25 PIPE PLUG±REPLACE	G	TO BE IN PLACE DURING MOUNTING OF MOTOR
WITH GREASE FITTING FOR		BUT TO BE REMOVED BEFORE OPERATION OF
REGREASING (ALL MODELS EXCEPT		MOTOR
UP1, UP2, AUP1 AND AUP2)
	58.50

9.56

AIR OUT

C ARMATURE

L

ARMATURE LOCK

7.88 ARRANGEMENT SEE NOTE

.50 NPT FOR AIR PRESSURE MEASUREMENT

A1

1.06F2

A2

		F1
+	.06
±		F
13.43

+± .06 9.24

E HOLE

1.56 DIA. THRU	1.38
(4 HOLES)	23.12
1.74	23.12
G
8.25	6.50

10.50

+± .005 11.375 DIA.

1.06

.562 DIA.

2 HOLES

GE±752±AUP SHOWN IN MAIN VIEWS GE±752±UP SHOWN IN FIG. 1

APPROXIMATE WEIGHTS GE±752±UP 6750 POUNDS GE±752±AUP 6850 POUNDS

AIR FLOW REQUIREMENTS 2300 CFM OF STANDARD AIR MINIMUM 900 HP

2800 CFM OF STANDARD AIR MINIMUM 1000 HP

C MOTOR

L

G	+
	± .12
	2.38
3.19	1.00 R.
3.19
	3.62
.75±10 TAP THRU
(2 HOLES)	FOOT
FOR JACKING	DIMENSIONS

IMPORTANT

THE ELECTRICAL EQUIPMENT SHOULD BE LOCATED IN A SPACE WHICH

(1)PROVIDES SUFFICIENT ACCESSIBILTY FOR BRUSH INSPECTION

(2)ALLOWS REMOVAL OF ALL THE BRUSHES AND PIGTAIL FASTENERS

(3)ALLOWS MAINTENANCE PERSONNEL TO COMPLY TO THE GE MAINTENANCE INSTRUCTION SPECIAL REQUIREMENTS

E HOLE

FIG. 48. OUTLINE, UP AND AUP (41E903631 CHG. H). E±28755B.

75

Image 75

Contents Vertical Drilling Motor Type GE752 ContentsGeneral Description IntroductionGEK±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 EquipmentGrease Tubes and Pipe Plugs Grounding Procedures FigOverhaul LubricationInspection Monthly Covers, Seals, LatchesBrushholders Fig Brush Spring Pressure Brushholder SleevesFlash Ring BrushesCommutator Creepage BandBasic Repairs Brush Replacement Brushholder ReplacementSEMI±ANNUALLY Installation Brushholder Clearance AdjustmentCommutator Resurfacing Hand Stoning Procedure Sanding ProcedureFixture Grinding Grinder InstallationCommutator GRINDER. E±18249 ±19771A GrindingTesting Before Disassembly Air Curing CommutatorBasic Overhaul Armature Removal From Frame DisassemblyMegohmmeter Test Bar±To±Bar Resistance TestCOMMUTATOR±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 CleaningArmature Vapor DegreasingAnti±Friction Bearings/Shaft Tapers/Bearing Fits Bearing InspectionCommutator Armature Shaft InspectionMotor Frame Armature Insulation 41D731545 CHG. F. E±18156A See Note Lubrication of Bolts BrushholdersConnection Diagram 493A210 CHG . E±39092B Diameter Creepage Band ReplacementRewinding Armature Riser WidthTorque Wrench Acceptable Method ProcedureCommutator Tightening Hydraulic Press Preferred 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 RakingRewound Armature Resistance MeasurementTest After Repair Armature High Potential Test Used ArmatureMotor Frame Field Coil ReplacementCoil Installation Procedure for New Coil±Pole AssemblyCoiled 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 TerminalsFlood Dipping Coiled Frame Test After RepairCoiled Frame Without Armature Reassembly Balancing ArmatureVarnish Treatment Armature All Models Except US2, UP6, AUT2 and AUP5 Armature BearingsDrive±End Bearing Figs , 35, 36 Commutator±End BearingDRIVE±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 Mounting Hub FittingHub Mounting Testing After Overhaul Testing Series MachinesModels 5GE752AUP, AUT Unventilated Testing Shunt Machines Models 5GE752UP and USMotor Operation Ventilated 2300 cfm at 7.6 in. H2O at Commutator ChamberShipping Cleaning and SlushingRemoving Armature Locking Arrangement Locking the Armature For ShipmentPreparation of BOX SkiddingProtection ArmaturesStorage 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