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TM 9-4910-600-14 & P
DEPARTMENTOF THE ARMY TECHNICAL MANUAL
OPERATOR, ORGANIZATIONAL, DIRECT SUPPORTAND GENERAL SUPPORT MAINTENANCEMANUAL INCLUDING REPAIR PARTS LIST
FOR
GRINDING KIT, VALVE SEAT(K O LEE CO, INC)
(4910-00-060-9983)
HEADQUARTERS,DEPARTMENT OF THE ARMY
APRIL 1978
TM 9-4910-600-14&P
TECHNICAL MANUAL HEADQUARTERSDEPARTMENT OF THE ARMY
No. 9-4910-600-14&P WASHINGTION, DC, 21 April 1978
Operator, Organizational, Direct Supportand General Support MaintenanceManual Including Repair Parts List
forGRINDING KIT, VALVE SEAT
(KO LEE CO, INC)(NSN 4910-00-060-9983)
REPORTING OF ERRORS
You can improve this manual by recommending improvements using DAForm 2028 (Recommended Changes to Publications and Blank Forms)or DA Form 2028-2 located in the back of the manual and mail the formto Commander, US Army Armament Materiel Readiness Command,ATTN: DRSAR-MAS, Rock Island, IL 61299. A reply will be furnisheddirect to you.
NOTE
This manual is published for the purpose of identifying an authorizedcommercial manual for the use of the personnel to whom the grinding kitis issued.
Manufactured by: K.O. Lee Co., Inc.200 S. HarrisonAberdeen, SD 57401
Procured under Contract No: DAAA09-76-C-6346
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ABSTRACT
REFERENCE: MIL-G-45930(WC) 19 July 1974; PARA. 3,6.1.
3.6.1. DRIVER. The driver shall be a hand-held electric - powered rotary tool for driving the grinding wheels.
3.6.1.1. SPINDLE DRIVE. The spindle drive shall transmit the power from the motor to the grinding wheels toperform the valve seat grinding requirements as specified below in Table I:
TABLE I.
Requirements for both Type I and Type II grinding kits: Valve seat outside diameter, range, in inches, 1-3;Spindle speed, RPM, minimum (no load) 8,000; Motor, Horsepower, minimum 1/3. Rated torque rangefoot pounds 0.3 - 0.5.
The drive end of the spindle drive shall incorporate provisions for connecting the grinding wheel holder specified in 3.6.3.The connection shall provide a positive drive fitting between the wheel holder and the spindle without slippage, looseness,and detrimental vibration during operation of the driver. The drive spindle for the type I grinding kit shall effect an includedangle of 105 to 150 degrees with the center line of the drive spindle and the center line of the armature shaft. If a straightdrive unit is furnished, an angle attachment shall be provided. The drive spindle for the type II grinding kit shall be at anangle to accommodate grinding seats as shown in Figure 1.
3.6.1.2 HANDLE. The driver shall be fitted with a pistol-grip, planer, D , or straight-type handle affording theoperator a full hand grip. The handle shall permit the operator (one man) to position and control the driver during thegrinding operation.
3.6.1.3 DRIVE MOTOR. The drive motor shall be of the universal type, intermittent duty, in conformance with CC-M-636. The horsepower and the torque produced by the driver spindle shall be as specified in Table 1. Unless otherwisespecified (see 6.2.1), the motor shall operate from a nominal power source of 115 volts, 60 Hz, single phase, and 115 voltsdirect current (dc).
3.6.1.4 SWITCH. The motor shall be controlled by a trigger or button type switch of quick break design. Currentrating of the switch shall be not less than the full load current rating of the motor. The switch shall not be equipped with amechanism for locking in the on position. Switches shall conform to the requirements of UL No. 45.
3.6.1.5 POWER CORD. The motor shall be furnished with not less than 15 feet of flexible oil resistant, waterresistant, three-conductor cord in accordance with UL NO. 73. The ground conductor shall be securely connected toprovide a common ground with the exposed parts of the grinder frame. The ground connection or connections shall bemade on the inside of the grinder frame. The size of the conductor shall be determined from the full load ampere rating ofthe motor and shall conform to NFPA Standard NO. 70. The three-wire grounding plug shall be of the cord grip designand be in accordance with style D of W-C-596. A mating three-to-two-wire adapter with a grounding wire shall befurnished for use with a two-wire outlet.
3.6.1.6 BEARINGS. Bearings shall be ball or roller type of suitable design, housed to prevent leakage of lubricantand entrance of dirt and dust. The bearings shall be lubricated sealed-for-life type or shall be provided with means forproper lubricant application.
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LIST OF REPLACEMENT PARTS RECOMMENDED
P300BB. GRINDING KIT, VALVE SEAT, ELECTRICWITH FUNGUS CONTROL AND RADIO SUPPRESSION
IN ACCORDANCE WITH MIL-G-45930(WC)DATED 74 JULY 19, TYPE I
1 P223 Hex Ball Terminal1 P196X Ball Bearing Wheel Holder 11/16 " Threaded End1 P198X Ball Bearing Wheel Holder 9/16 “ Threaded End1 26591N Switch for P522BMIL2 P176D Diamond Screw1 P378 Pilot Assembly for P372 Wheel Dresser1 R3838 Set of (2) Carbon Brush and Spring Assembly
NOTE
Grinding Wheels in sizes and grade as per use requirement. These areexpendable items and order recommendations can only be based onamount of servicing done by your facility.
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By Order of the Secretary of the Army:
BERNARD W. ROGERSGeneral, United States Army
Official: Chief of StaffJ. C. PENNINGTON
Brigadier General, United States ArmyThe Adjutant General
� U.S. GOVERNMENT PRINTING OFFICE: 1991 - 281-486/42961
PIN: 034632-000
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