GE GE752 manual Pole Bore Diameter measured at center of pole Motors Min Max

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GEK±91584D, Vertical Drilling Motor, Type GE752

DATA (Cont'd)

Pole Bore Diameter (measured at center of pole) (in.)
Motors:	Min.	Max.
Exciting Poles (Shunt models)	19.606	19.640
Exciting Poles (Series models)	19.613	19.640
Commutating Poles (Both Shunt and Series models)	19.956	19.998

Impedance Test		Voltage Drop
(Coiled Frame Without Armature):		Min.	Max.
Exciting Field (With Cables)
Model 752UP (0.5 Amps @ 60 Hz)	59.0		66.6
Model 752AUP (24 Amps @ 60 Hz)	13.1		15.6
Model 752US (0.5 Amps @ 60 Hz)*	59.0		66.6
Model 752AUT (24 Amps @ 60 Hz)	13.1		15.6
Commutating Field (With Cables)
Model 752UP (24 Amps @ 60 Hz)	7.3		8.5
Model 752AUP (24 Amps @ 60 Hz)	7.2		8.5
Model 752US (24 Amps @ 60 Hz)**	7.3		8.1
Model 752AUT (24 Amps @ 60 Hz)	7.7		8.5º
Lubrication* ± Armature Bearings
Grease Capacities (oz.):
Drive End	. . . . . . . . .		. . . . . . . . . 39.1
Commutator End	. . . . . . . . .		. . . . . . . . . 31.8
Lubricant	.	. . . . . . .	GE±D6A2C10*

**See Grease Specification at the end of the DATA table.

Weights (lb.) (approx.)

Complete . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6720

Armature Only . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2100

High±Potential Test
60 Hz, a±c, to ground for one minute (All Windings) (volts):
New or Rewound Armature	. . . . . . . . . . . . . . . . . 3500
Reconditioned	. . . . . . . . . . . . . . . . . 2000
Megger Test	Minimum Megohmmeter
Reading (megohms)
Shunt Models
A1±A2	. . . . . . . . . . . . . . . . . . . 1.4
F1±F2	. . . . . . . . . . . . . . . . . . . 0.3
Series Models
A1±A2	. . . . . . . . . . . . . . . . . . . 1.4
F1±F2	. . . . . . . . . . . . . . . . . . . 1.4

*With Commutating Poles (CP) out. **Excitation Field in.

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Contents Contents Vertical Drilling Motor Type GE752General Description IntroductionGEK±91584D, Vertical Drilling Motor, Type GE752 Vertical Drilling Motor, Type GE752, GEK±91584D Model DifferencesContd Model Differences DataData Contd Carbon BrushesPole Bore Diameter measured at center of pole Motors Min Max Motor Ratings Continuous Max. HP Shunt UP Special Tools Equipment Grounding InstructionsLubrication Grounding Procedures FigOverhaul Grease Tubes and Pipe PlugsInspection Monthly Covers, Seals, LatchesBrushholders Fig Brushholder Sleeves Brush Spring PressureCreepage Band BrushesCommutator Flash RingBasic Repairs Brush Replacement Brushholder ReplacementSEMI±ANNUALLY Installation Brushholder Clearance AdjustmentCommutator Resurfacing Sanding Procedure Hand Stoning ProcedureGrinder Installation Fixture GrindingCommutator GRINDER. E±18249 Grinding ±19771ATesting Before Disassembly Air Curing CommutatorBasic Overhaul Bar±To±Bar Resistance Test DisassemblyMegohmmeter 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 Cleaning Steam CleaningBearing Inspection Vapor DegreasingAnti±Friction Bearings/Shaft Tapers/Bearing Fits ArmatureCommutator Armature Shaft InspectionMotor Frame Armature Insulation 41D731545 CHG. F. E±18156A See Note Brushholders Lubrication of BoltsConnection Diagram 493A210 CHG . E±39092B Riser Width Creepage Band ReplacementRewinding Armature DiameterHydraulic Press Preferred Method ProcedureCommutator Tightening Torque Wrench Acceptable MethodSpin Seasoning Commutator Assembled On Armature Commutator ResurfacingTurning To Change Motor DirectionConnection Diagram 41A330278, CHG . E±38055B Connection Diagram 41A330179, CHG. A. E±37950A Raking ±4270BUsed Armature Resistance MeasurementTest After Repair Armature High Potential Test Rewound ArmatureProcedure for New Coil±Pole Assembly ReplacementCoil Installation 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 Brazing Coil Terminals Gas Torch BrazingFlood Dipping Coiled Frame Test After RepairCoiled Frame Without Armature Reassembly Balancing ArmatureVarnish Treatment Armature Commutator±End Bearing Armature BearingsDrive±End Bearing Figs , 35, 36 All Models Except US2, UP6, AUT2 and AUP5DRIVE±END Bearing ASSEMBLY. E±18166E DRIVE±END Bearing ASSEMBLY. E±39301 Models US2, UP6, AUT2 and AUP5DRIVE±END Bearing Assembly 41B537821, CHG. B. E±37952B Armature Assembly Into Frame Models UP and AUPCOMMUTATOR±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 Ventilated 2300 cfm at 7.6 in. H2O at Commutator Chamber Testing Shunt Machines Models 5GE752UP and USMotor Operation UnventilatedLocking the Armature For Shipment Cleaning and SlushingRemoving Armature Locking Arrangement ShippingArmatures SkiddingProtection Preparation of BOXBoxing the Armature Storage Placing Into StorageRemoving from Storage Shipping BOX with Armature Less COVER. E±3784Vertical 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