1、- MIL-T-L3718D 51 - 7777906 0368775 - I- p- 10-01 MIL-T-13918D 22 August 1373 SUPERSEDING MIL-T- 139 18C 23 March 1967 MILITARY SPECIFICATI I TOOL KIT, VALVE SEAT RING INSERTER This specification is approved for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. Th
2、is specification covers one type of tool kit for removing and replacing valve seat ring inserts in cylinder blocks and heads of internal combustion engines. 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
3、 of this specification to the extent specified herein: SPECIFICATION MILITARY MIL-T-45542 - Tool Kits, Shop Sets, and Tool Sets (Both Conmion and Special), Preparation for Delivery of; General Specification For. STANDARD MILITARY MIL-STD-105 - Sampling Procedures and Tables for Inspection by Attribu
4、tes. (Copies of specifications, standards, and drawings required by suppliers in connection with specific procurement functions should be obtained from the procuring activity or as directed by the contracting officer.) FSC 5180 7 -. THIS DOCUMENT CONTAINS /=? PAGES. Provided by IHSNot for ResaleNo r
5、eproduction or networking permitted without license from IHS-,-,-MIL-T-13918D LAWS AND REGULATIONS 29 CFEt 1910 - OCCUPATIONAL SAFETY AND HEALTH ACT (OSHA) STANDARDS (The Code of Federal Regulations (CFR) and Federal Register (FR) are for sale on a subscription basis by the Superintendent of Documen
6、ts, US Government Printing Office, Washington, DC 20402. When indicated, reprints of certain regulations may be obtained from the Federal agency responsible for issuance thereof. ) 2.2 Other publications. The following document forms a part of this specification to the extent specified herein. ident
7、ified, the issue in effect on date of invitation for btds or request for proposal shall apply. Unless a specific issue i National Bureau of Standards Handbook H-28-Screwthread Standards For Federal Service (Application for copies should be addressed to the Superintendent of Documents, Government Pri
8、nting Office, Washington, DC 20402.) Underwriters Laboratories, Inc. (UL) UL 45 - Standard For Electric Tools (Application for copies should be addressed to the Underwriters Laboratories, Inc., 207 East Ohio Street, Chicago, IL 60611; Walt Whitman Road, Melville, NY 11746; or 1655 Scott Boulevard, S
9、anta Clara, CA 95050.) American Society for Testing and Materials (ASTM) E 18 - Methods of Test for Rockwell Hardness and Superficial Hardness of Metallic Materials (Application for copies should be addressed to American Society for Testing and Materials, 1916 Race Street, Philadelphia, PA 19103.) (
10、Technical society and technical association specifications and standards are generally available for reference from libraries. distributed among technical groups and using Federal agencies .) They are also 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IH
11、S-,-,-MIL-T-13918D 3. REQUIREMENTS 3.1 First article. When specified (see 6.21, the supplier shall furnish a sample of the item to be procured under this specification for first article testing and approval (see 4.3 and 6.3). 3.2 Standard product. The tool kits delivered under this specification sha
12、ll be the manufacturers comercial product, except for any changes necessary to comply with specification requirements. All like items furnished on any one contract, including parts and subassemblies thereof, shall be new and interchangeable. 3.3 Codes and standards. The tool kits shall comply with t
13、he applicable requirements of UL 45 and OSHA Standards. 3.3.1 Compliance. Prior to approval of the first article, if one is sub- mitted, or prior to commencing production, the supplier shall submit to the contracting officer or his authorized representative satisfactory evidence that the tool kits t
14、hat he proposes to furnish under this specification meet the applicable requirements of UL 45 and OSHA Standards. 3.3.1.1 E. Acceptable evidence of meeting the requirements of UL shall be the UL label, a UL listing mark, or a certified test report from a recognized independent testing laboratory, ac
15、ceptable to the Government, indicating the tool kits have been tested and conform to UL Standard No. 45. 3.3.1.2 OSHA. The tool kits furnished under this specification shall com- ply with the applicable standards promulgated under the Occupational Safety and Health Act. 3.4 Materials and components.
16、 Materials and components shall be as specified herein. normally used by the manufacturer in his standard commercial tool kit provided that the completed item complies with ail provisions of this specification. Materials not definitely specified shall be of the quality 3.5 Design and construction. T
17、he tool kit shall consist of a carrying case and tools to replace or install valve seat ring inserts. shall contain counterboring tools with adjustable cutters, be used for installing ring inserts with outside diameters of 1-1/8 inch to 3-3/32 inch inclusive, in blocks or heads of internal combustio
18、n engine whose access to valve seats is not through the cylinders. shall satisfactorily perform their operations wihout causing any damage to the block or head. The kit The tool shall In addition, they 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-
19、,- MIL-T-139LD 51 M 9999906 0368978 T M MIL-T-13918D 3.5.1 Lubrication. All bearings shall be provided with oil cups or other suitable means for lubrication wherever required or bearings shall be sealed and lubricated. a standard gear grease for this type of application. shall be provided with means
20、 of being conveniently lubricated as may be required. Gears shall be completely inclosed in a gear case packed with All other moving parts 3.5.2 Threaded parts. Threads shall comply with Handbook H-28. 3.5.3 hurls. Knurls shall be provided wherever gripping, assembling and disassembling or adjustmen
21、ts are normally performed with the hand, 3.5.4 Castings and forgings. All castings or forgings, when used in construction of these tools, shall be free from blowholes, porosity, hard spots, shrinkage defects, cracks, or other defects. Forgings shall be free from scale, inclosures, cold shuts, mismat
22、ching and other defects that may affect the structural strength of the forgings involved. and other essential physical and chemical properties of the castings or forgings shall be adequate to meet the performance requirements specified herein. be used on castings or forgings for reclaiming any parts
23、 of these tools without authorization of the procuring activity. Strength In no event shall welding, brazing, soldering, peening or plugging 3.5.5 Fastening devices. All nuts, bolts, pins and similar parts shall be installed with adequate means for preventing them from loosening or be- coming out of
24、 adjustment. adjustment shall not be swaged, peened, staked or otherwise permanently deformed. Ail fastening devices subject to removal or 3.5.6. Component parts. The kit component parts shall consist of a base mounting assembly, counterboring attachment, spinning or peening attach- ment, pilots, mo
25、tor operated drive unit, and insert driver and remover tools (see table I), TABLE I. Component parts Components Size Base assembly Case, valve seat inserter Cutter blades Range 1-1/8“. - 1-3/8“ I1 II Range 1-3/8“ - 1-23/32“ Il I1 Range 1-23/32“ - 2-1/16“ II II Range 2-1/16 - 2-13/32“ 4 Provided by I
26、HSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-T-13918D TABLE I. Component parts (contd) Components Size Cutter blades (cont Id) 11 II Cutterhead assembly 11 II I1 11 Spinner blade Il 11 11 Il Il I1 ir 11 II 11 Drive unit Ring driver head 11 11 II II Il It 1
27、1 I1 II I1 II Il II I1 11 II 11 11 I1 11 Il Il 11 It II II I1 11 11 11 I1 Il Il Il II II II II ir II 11 11 11 11 Il Valve seat inserter Insert removing tool 5 Range 2-13/32“ - 2-3/4“ Range 2-314“ - 3-3/32“ 1-1/8“ - 1-318“ 1-3/8“ - 2-1/16“ 2-1/16“ - 2-3/4“ 1-1/8“ - 1-3/8“ 1-3/8“ - 1-23/32 1-23/32“ -
28、2-1/16 2-1/16“ - 2-13/32 2-13/32“ - 2-314“ 2-3/4“ - 3-3/32“ 1- 3 / 3 2“ 1-111 32“ 1- 15/ 32“ 1-19/32“ 1-231 32“ 1-27/32“ 1-31/32“ 2-3/32“ 2-7/32? 2-11/32“ 2-15/32 2-19 / 32“ 2-23/32“ 2-27/32“ 2-31/32“ 3-3/32“ Provided by IHSNot for ResaleNo reproduction or networking permitted without license from I
29、HS-,-,-MIL-T- 139 18D TABLE I. Component parts (contd) Components Size Ring driver pilot It 11 II II 11 Il 11 II 11 11 11 11 Il 11 II Valve seat pilot Il 11 11 It 11 II 11 Il It 11 II 11 II 11 11 II II Il Ring driver body Pilot wrench 5/16 11/32“ 3/8“ 7/16“ 9/16“ 1/2“ 1/4“ 9/32“ 5/16“ 11/32“ 3/ 8“ 7
30、/16“ i/ 2“ 3.5.6.1 Insert removing tool. The insert removing tool shall be forged from a nominal 5/8-inch diameter, high grade tool steel, with a maximum overall length of 10-inches plus or minus 1/2-inch. tool shall be curved and beveled to fit under the insert to be removed. The opposite end shall
31、 be the striking end. prying the insert from the engine head or cylinder block without evidence of distortion, bending, or breakage of the engine component or the tool, when tested in accordance with 4.5.2.1. One end of the removing This tool shall be capable of 3.5.6.2 Counterboring tool. The count
32、erboring tool shall be motor operated and shall be capable of producing a 50 microinch or better finish when operating with feed at operating speed, cutting heads which are capable of operation at any diameter within their range. The counterboring tool shall have an automatic hand feed and a limit d
33、epth stop which is adjustable to within plus or minus 0.005 inch of the thickness of the valve insert. When tested in accordance with 4.5.2.2, the tool shall be capable of counterboring the required recess circular to within 0.002 inch total ini- cator reading; concentric with the valve guide hole t
34、o within 0.002 iiich total indicator reading; and to within 0.005 inch per inch maximum taper with the guide hole in the engine block or head. The counterboring tool shall have expandable 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-T-13918D
35、 3.5.6.2.1 Cutters. The counterboring tool shall be provided with one or more high-speed steel cutter blades mounted in a cutting head. cutter blades shall have a hardness within the range of Rockwell C61-65 (see 4,5.1). guided by a pilot fitted to the valve guide hole in the engine block or head. b
36、ores within the size ranges specified in 3.5. shall provide for a press fit of the applicable insert when tested in accord- ance with 4.5.2.2. The The cutting head shall be supported by the base assembly and Cutter blades and cutter heads shall be capable of producing counter- The counterbore produc
37、ed 3.5.6.3 Drive unit. The drive unit shall consist of the motor, housing, and cord with all attachments required to hold the drive unit in alignment for operation and for attaching the drive shaft to the tool heads for opera- tion of the unit. counterboring, and peening operations can be performed
38、at operating speed. Speed of drive unit shall be so selected that removal, 3.5.6.3.1 Electrical characteristics. The drive unit shall be designed for operation on a 60-Hertz, 120-volt power supply and shall conform to the applicable requirements of UL 45. tool shall be between 50 and 60 revolutions
39、per minute. Operating speed of the counterboring 3.5.6.4 Base assembly. The base assembly shall have a cast vertical base, designed to be fastened to the block or head by the use of studs or cap screws normally used in an engine block or head. in height and in horizontal and vertical planes, and cap
40、able of rotating, shall be attached to this base. counterboring and peening or spinning attachments. An arm, adjustable The arm shall be designed to guide the 3.5.6.5 Pilots. Pilots shall be provided for the purpose of guiding the counterboring and peening or spinning tool. in table I. The pilots sh
41、all be designed to align the tool with new or worn valve guide holes in the engine block or head. The portion of the pilot making contact with the valve guide hole shall not restrict freedom of movement, yet provide a fit to enable concentricity to be within the tolerance limits specified in 3.5.6.2
42、, the range of Rockwell C50-60 (see 4.5.1). Sizes shall be as shown The pilot hardness shall be within 3.5.6.6 Valve seat insert driver. The valve seat insert driver shall consist of pilots, driving rod and a set of driving heads. shall be provided for each size insert specified in 3.5, with a diame
43、ter 1/32 to 1/16 inch smaller than that of the applicable insert. Pilots of the sizes shown in table I shall be provided-for alignment of the inserts during installation, head shall remain in alignment and show no evidence of distortion. A driving head When tested in accordance with 4.5.2.3, the dri
44、ving rod and 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-_I.s_ MIL-T-L37LD 51 = 9999906 0368782 Z MIL-T-139 18D 3.5.6.7 Peening or spinning tool. designed for insertion in the counterboring attachment, shall be furnished. The tool shall be desi
45、gned to displace (peen or spin) the block or head metal concentrically over the outer chamfered edge of each insert within the applicable size range, retaining (clinching) it, The tool shall be made of tool steel and shall be within the hardness range of Rockwell C55-58 (see 4.5.1) when tested in ac
46、cordance with 4.5.2.4. A peening or spinning tool attachment, 3.6 Finish. All exposed metal and working surfaces shall be finished in accordance with the manufacturers standard commercial practice, except that no component or accessory shall be cadmium plated. 3.7 Marking. A noncorrosive metal namep
47、late, securely attached to the base assembly unit, shall be permanently marked with the manufacturers name or readily identifiable trademark. Each cutter, cutting head, driving head and pilot shall have their size or size range permanently marked in the most convenient location practicable. 3.8 Hand
48、book of instructions. The supplier shall furnish a handbook with each kit, containing operating instructions, necessary drawings and illustrations, maintenance instructions, safety precautions and a manu- facturers parts list. 3.9 Carrying case, The tool kit shall be furnished with a carrying case,
49、The case shall be fabricated from a minimum thickness of No. 20 gage (.0375) sheet metal. The case shall be provided with a hinged cover, a carrying handle, and a hasp or similar means to keep the cover closed. The carrying case shall be of adequate size and partitioned to carry the tool kit equipment and spare cutters. in accordance with the manufacturers standard comercial practice. The carrying case shall be fi
