GE GE752 manual Contd Model Differences, Data

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GEK±91584D, Vertical Drilling Motor, Type GE752

TABLE 1 (Cont'd) MODEL DIFFERENCES

Motor	Model Differences	Superseded By

752AUP3	Same as AUP2 except:
	± Has a single grease tube at drive end which is
	part of framehead/bearing assembly for ease of
	armature disassembly.

752AUP4	Same as AUP3 except:
	± Has improved insulation for higher temperatures.

752AUP5	Same as AUP4 except:
	± Has an improved commutator±end bearing assembly and an
	ABS±certified armature shaft.

752AUT1	This is a series motor with the following distinctions:
	± Same as 752AUP3 except:
	± Has an AG type armature with an AF commutator and
	a standard AUP flash ring.
	± Has AG type commutator coils and poles with brazed
	instead of bolted connections.
	± Has air vents in the drive±end framehead
	± Has a frame specially machined for mounting the
	customer gearbox at the drive end.
	± Has a different drive±end grease arrangement.
	± Has rubber hardtop brushes instead of regular duplex
	brushes.

752AUT2	Same as AUT1 except:
	± Has an improved commutator±end bearing assembly and an
	ABS±certified armature shaft.

DATA

Max. Permissible Speed (rpm) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1800

Max. Permissible Vibration (Commutator End) (in.) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.002

ªResistance at 25 C (Ohms):	Min.	Max.
Armature
Model 752UP	0.00912	0.00949
Model 752AUP	0.00912	0.00949
Model 752US	0.00749	0.00800
Model 752AUT	0.00749	0.00800
Exciting Field (With Cables)
Model 752UP	1.25	1.33
Model 752UP (After 3/88)	1.13	1.22
Model 752AUP	0.00512	0.00558
Model 752US	1.13	1.22
Model 752AUT	0.00486	0.00535
Commutating Field (With Cables)
Model 752UP	0.00508	0.00540
Model 752UP (After 3/88)	0.00439	0.00534
Model 752AUP	0.00439	0.00477
Model 752US	0.00432	0.00480
Model 752AUT	0.00432	0.00480

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Contents Contents Vertical Drilling Motor Type GE752Introduction General DescriptionGEK±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 InstructionsGrounding Procedures Fig OverhaulLubrication Grease Tubes and Pipe PlugsCovers, Seals, Latches Inspection MonthlyBrushholders Fig Brushholder Sleeves Brush Spring PressureBrushes CommutatorCreepage Band Flash RingBrushholder Replacement Basic Repairs Brush ReplacementSEMI±ANNUALLY Brushholder Clearance Adjustment InstallationCommutator Resurfacing Sanding Procedure Hand Stoning ProcedureGrinder Installation Fixture GrindingCommutator GRINDER. E±18249 Grinding ±19771AAir Curing Commutator Testing Before DisassemblyBasic Overhaul Disassembly Megohmmeter TestBar±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 Cleaning Steam CleaningVapor Degreasing Anti±Friction Bearings/Shaft Tapers/Bearing FitsBearing Inspection ArmatureArmature Shaft Inspection CommutatorMotor Frame Armature Insulation 41D731545 CHG. F. E±18156A See Note Brushholders Lubrication of BoltsConnection Diagram 493A210 CHG . E±39092B Creepage Band Replacement Rewinding ArmatureRiser Width DiameterProcedure Commutator TighteningHydraulic Press Preferred Method 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 ±4270BResistance Measurement Test After Repair Armature High Potential TestUsed Armature Rewound ArmatureReplacement Coil InstallationProcedure 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 Brazing Coil Terminals Gas Torch BrazingTest After Repair Flood Dipping Coiled FrameCoiled Frame Without Armature Balancing Armature ReassemblyVarnish Treatment Armature Armature Bearings Drive±End Bearing Figs , 35, 36Commutator±End Bearing 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 Fitting HUB MountingHub Mounting Testing Series Machines Testing After OverhaulModels 5GE752AUP, AUT Testing Shunt Machines Models 5GE752UP and US Motor OperationVentilated 2300 cfm at 7.6 in. H2O at Commutator Chamber UnventilatedCleaning and Slushing Removing Armature Locking ArrangementLocking the Armature For Shipment ShippingSkidding ProtectionArmatures 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