1、MIL-S-4953C USAF) i5 August 1 4 67 SUPERSEDING MIL-S-4953B(ASG) 7 January 1963 MILITARY SPECIFICATION SPRAY OUTFIT, CORPOSION PREVENTIVE COMPOUND AND ENGINE PREOILER, TRAILER MOUNTED, TYPE MA-2 1. SCOPE 1.1 This specification presents requirements for one type of portable, trailer-mounted, corrosion
2、-preventive compound and engine preoiler spray outfit, designated type NA-2. 2. APPLICABLE DOCUMENTS 2.1 The following documents, of the issue in effect on date of invitation for bids or request for proposal, form a part of the specification to the extent specified herein. SPECIFICATIONS Federal CC-
3、M-636 TT-E-529 PPP-B-636 Military MIL- P- 116 MIL-D- 1000 MIL-E-527 2 MIL-0-608 1 MIL-L - 608 2 MIL-C-6529 MIL-L-7808 MIL-W-8005 MIL-M-008090 MIL-C-8188 Motor, Alternating Current (Fractional Horsepower) Enamel, Alkyd, Semigloss Boxes, Fiberboard Preservation, Methods Of Drawings, Engineering And As
4、sociated Lists Environmental Testing, Aeronautical And Associated Equipment, General Specification For Oil, Lubricating, Jet Engine Lubricating Oil; Aircraft Recipro- cating Engine (Piston) Corrosion Preventive, Aircraft Engine Lubricating Oil, Aircraft Turbine Engine, Synthetic Base Wheels And Hubs
5、, For Industrial Pneumatic Tires Mobility, Towed Aerospace Ground Equip- ment, General Requirements For Corrosion-Preventive Oil, Gas Turbine Engine, Aircraft Synthetic Base FSC 4940 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-S-4953C(USAn MI
6、L-A- 84 2 1 MIL-S-8512 MIL-P-8585 MIL-A-8625 MIL-H-8 7 94 MIL-E-11275 MIL-P-16298 MIL-C-20696 MIL-C-52078 STANDARDS Federal FED-STD-595 Mi li tar: MIL-STD- 129 MIL-STD-130 MIL-STD-143 MIL-STD-281 MIL-STD-826 MIL-STD-831 MIL-STD-1186 MS 3 3 586 MS51336 DRAWINGS Air Force Air Transportability Requirem
7、ents, General Specification For Support Equipment, Aeronautical, Special, General Specification For The Design Of Primer Coating, Zinc Chromate, Low- Mois ture-Sens itivity Anodic Coatings, For Aluminum And Aluminum Alloys Hose, Rubber, Hydraulic, Fuel, And Oil Resistant Engines, Gasoline, Industria
8、l Type, General Specification For Electric Machines Having Rotating Parts And Associated Repair Parts: Packaging Of Cloth, Coated, Nylon, Waterproof Cap-Plug, Cap, And Plug, Protective, Plastic Dust And Moisture Seal I Colors Marking For Shipment And Storage Identifdcation Marking Of US Military Pro
9、perty Specifications And Standards Order Of Precedence For The Selection Of Automobiles, Trucks, Truck-Tractors, Trailers And Trailer Dollies; Preserva- tion And Packaging Of Electromagnetic Interference Test Requirements And Test Methods Test Reports, Preparation Of Cushioning, Anchoring, Bracing,
10、Blocking, And Waterproofing; With Appropriate Test Methods Metals, Definition Of Dissimilar Lunette-Coupler, Drawbar, Ring Spray Outfit-Corrosion Preveutive Compound and bgbe Preoiler, Trailer Mounted, Type Elk-2 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license
11、from IHS-,-,-Henry Spen best shop practices. When dimensions and tolerances may affect the interchangeability, operatioi, or performance of the spray outfit, they shall be held or limited accord-.ngly. 14 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,
12、-,-3.28.3 Screw assemblies. specified torque values for these assemblies. Assembly screws and bolts shall be tightened to the 3.28.4 Riveting. Riveting operations shall be carefully performed to insure that the rivets are tight and satisfactorily headed. 3.28.5 Welding. Where welding, brazing, or so
13、ldering is used in the fabrica- tiond the spray outfit, the process used shall be in accordance with the highest commercial standards. No welding shall be resorted to as a repair measure, except that small blowholes in castings may be filled when not in critical areas provided that the procuring act
14、ivity is fully informed of all pertinent details and approves the repair procedure prior to its accomplishment. 3.28.6 Cleaning. spattered, or excess solder, metal chips, and other foreign material after final assembly. Burrs and sharp edges, as well as resin flash that may crumble, shall be removed
15、. The spray outfit shall be thoroughly cleaned of loose, 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for inspection. Unless otherwise specified in the contract or purchase order, the supplier is responsible for the performance of all inspection requirements as specified herein. Except as othe
16、rwise specified, the supplier may utilize his own facilities or any commercial laboratory acceptable to the Government. The Government reserves the right to perform any of the inspections set forth in the specification where such inspections are deemed necessary to assure supplies and services confo
17、rm to prescribed requirements. 4.2 Classification of tests. The inspection and testing of the spray outfits shall be classified as follows: a. Preproduction tests. b. Acceptance tests. 4.3 Test conditions. 4.3.1 Apparatus. All instruments and apparatus used in determining the test results specified
18、herein shall be of laboratory precision type and shall be in current calibration. 4.3.2 Instrumentation. 4.3.2.1 Liquid flow rates. the efflux or by measuring a known volume over a time interval of not less than five minutes. Flowmeters shall not be used unless specifically approved by the procuring
19、 activity. Liquid flow rates shall be determined by weighing 15 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-4.3.2.2 Temperature. Temperature shall be measured by means of properly located thermocouples, thermistors or liquid-in-glass thermometers
20、. Sensors, connectors, and lead wire shall be properly arranged, insulated and compen- sated to minimize error. Measurements shall be accurate to within +5F. Readings shall be reported in degrees Fahrenheit. 4.3.2.3 Pressure. Insofar as is practicable, pressures and pressure differ- entials shall be
21、 measured by liquid manometers. range of liquid manometers shall be measured with properly calibrated Bourdon tube type gages. not less than four inches. Pressures exceeding the Gages shall be of laboratory type having a dial diameter 4.3.3 Preparation for test. Prior to testing, the spray outfit sh
22、all be prepared for testing by assembling, adjusting and servicing with the fuels and lubricants as specified in the operating and maintenance instruction manual. 4.3.4 Preliminary run-in. specified by the manufacturer. The nature and extent of run-in shall be as 4.3.5 Discharge pressure. The discha
23、rge pressure shall be the static pressure measured at the spray gun nozzle or at the discharge side of the 6 foot flexible hose used for preoiling. 4.3.6 - Power. an outside 22OV power supply is specified. The engine driven alternator shall be used for all tests unless 4.3.7 Fluid. Unless preoiling
24、fluids are specified, corrosion preventive mixtures consisting of each of the mixtures specified in 3.6.8 shall be used in all tests. The preoiling fluids shall be as specified in 3.6.8.1. 4.3.8 Inspection, servicing and adjustment. Inspections, servicing and adjustments shall be performed only as s
25、pecified in the operation and mainte- nance instruction manual unless such instructions are contrary to the re- quirements specified herein. 4.3.8.1 test for inspection, servicing and adjustments. The lapsed time shall be recorded on the adjustments. tion, correction and retest. Planned stops may be
26、 made at each 25 hour interval during the endurance Any major adjustment shall be cause for rejec- 4.3.9 - Data. All data recorded in accordance with 4.4 shall be included in the test report in accordance with MIL-STD-831. Data sheets shall include all recorded data as specified herein. 4.3.9.1 Read
27、ings. During the tests specified herein, at least the following data shall be recorded at intervals not greater than 30 minutes for performance demonstrations and other short duration tests and at intervals not greater than 2 hours during the endurance test specified in 4.6.8. 16 Provided by IHSNot
28、for ResaleNo reproduction or networking permitted without license from IHS-,-,-a. b. C. d. e. f. g. h. i. j. k. 1. 4.3.9.2 MIL-S-4953C(USAF) Date Time Ambient tempera Ure (dry bulb and wet bulb) Atmospheric pressure Liquid flow rate (pounds per minute and gallons per hour) Static pressure at the noz
29、zle Cabinet temperature Engine revolutions per minute and total hours operated Pump pressure Temperature of mixture at the nozzle Alternator output voltage and frequency Amperage readings (Alternator output and pump motor) Notes. Notes shall be included to indicate adjustments, servicing, leaks, vib
30、rations, operation of unit and auxiliary equipment and any other irregularities and corrective measures taken. 4.4 Preproduction tests. 4.4.1 Preproduction test report. After the preproduction tests are completed, a preproduction test report shall be prepared in accordance with MIL-STD-831. 4.4.2 Pr
31、eproduction test samples. When required by the procuring activity the contractor shall submit the two samples subjected to preproduction testing to the procuring activity which will use them for the following: a. An inspection of the mechanical construction of the spray outfit. b. To perform any tes
32、ts included in the specification after reviewing the contractors test report. 4.4.3 Tests. Preproduction tests shall consist of all tests specified in 4.6. 4.4.3.1 Part failures. If during the preproduction testing of the spray outfit, a part fails, that part will be replaced with a redesigned part
33、or one of a different material, unless the procuring activity authorizes the installation of a new part of the original design and material for one which failed due to faulty material or workmanship. The preproduction testing will be considered completed only when every major part in the unit has pa
34、ssed all testc. , +.the discretion of the procuring activity, redesigning and retesting -_ . - 17 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-may be required of any part or component which fails or indicates weakness after completing its preprodu
35、ction test, but which is retained in the unit to complete testing of the parts. 4.4.4 Electrical certification. The contractor shall submit proof that the electrical equipment specified in 3.14.5 which will be supplied under this specification conforms- to the requirements of Pamphlet 701- The label
36、 or listing of the Underwriters Laboratories, Inc. will be accepted as evidence of conforming to the requirements. 4.4.4.1 In lieu of the label or listing, the contractor may submit independ- ent proof satisfactory to theprocuring activity that the electrical equip- ment conforms to the requirements
37、 of Pamphlet 70. requirements does not absolve the contractor from complete compliance with the other requirements of this specification. Compliance with these 4.5 Acceptance tests. Acceptance tests shall consist of the following: a. Individual tests b. Sampling plan and tests 4.5.1 Individual tests
38、. Each spray outfit shall be subjected to the following tests as described under 4.6. a. Examination of product b. Dielectric strength c. General operation 4.5.2 Sampling plan. One spray outfit shall be selected at random from each lot of fifty or fraction thereof on the order and subjected to tests
39、 in 4.6.4.1 through 4.6.4.4. 4.5.2.1 - Lot. tially the same conditions and submitted for inspection at substantially the same time. A lot shall consist of spray outfits manufactured under essen- 4.5.2.2 Rejection and retest. When one or more spray outfits from a lot fail to meet the specification, a
40、cceptance of all spray outfits in the lot shall be withheld until the extent and cause of failure are determined. After corrections have been made, all required tests shall be repeated. 4.5.2.3 Individual tests may continue. For production reasons, individual tests may be continued pending the inves
41、tigation of a sampling test failure. Final acceptance of the entire lot or lots produced later shall not be made -.-rnmnn specification. I Le1113 IIICC c CLI I ,*,ts cf th2 18 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-S-4953C(USAF) 1 4.5.3
42、Defects in spray ou“.fits already accepted. The failure could indicate that defects may exist in spray If so, the contractor shall fully advise the procuring likely to be found and methods of correcting them. 4.6 Test methods. 4.6.1 Examination of product. The spray outfit shall mine compliance with
43、 the requirements specified herein als, workmanship, dimensions, and marking. investigation of a test outfits already accepted. activity of all defects , be inspected to deter- with respect to materi- 4.6.2 Dielectric strength. The motor alternator and the electrical system shall be subjected to a d
44、ielectric strength test at a potential of 1,450 volts for one minute. Any current leak shall be cause for rejection. 4.6.3 General operation. for general performance of safety features. All valves, pump, heating system, and other controls shall be checked to assure proper operation of the spray outf
45、it. This checking shall be performed during the test specified in 4.6.4.1 and 4.6.4.3. The spray outfit shall be checked during operation 4.6.4 Performance demonstration. The following tests shall be conducted in the order given. 4.6.4.1 fluid at a rate of 180 gph at a pressure of 80 psi heated to a
46、 maximum temper- ature of 100F f10F with the electric heaters. shall be filled with the preservative compound and the compound heated from 30F to 235F I15F in 30 minutes or less. The preservative compound shall then be pumped for 30 minutes at a rate of 10 gph at a pressure of 150 psi. The timer or
47、spray gun shall not be used in this test. The spray outfit shall be operated for 30 minutes pumping the preoiling After this test, the unit 4.6.4.2 heated corrosion-preventive compound through the spray nozzle at a rate of 1 pint per minute at 150 psi. The timer shall not be used in this test. The s
48、pray outfit shall be operated for 30 minutes delivering the 4.6.4.3 corrosion-preventive compound through the nozzle with the timer on the gun in operation. The trigger shall be depressed 30 times. The quantity of compound delivered at each depression of the trigger at the spray gun shall be 50 f2 C
49、C. taken during the test. The spray outfit shall be operated at 150 psi delivering the heated The quantity delivered shall be the average of six measurements 4.6.4.4 The spray outfit shall be operated at 150 psi delivering the heated corrosion-preventive compound through the nozzle with the timer on the gun set.for delivery of 1 pint at each depression. This operation shall be re- peated 30 times. ments taken during this operation.
