1、1 . MIL-C-27840C (I) 38 m 7797706 O235027 m , cV-JP-/O MIL-C-27840C (USAF) AMENDMENT 1 10 October 1975 I MILITARY SPECIFICATION CRANE, TRUCK MOUNTED A/S32H-11 , 4,000 POUND CRANE CAPACITY, 4 X 4 This amendment forms a part of Military Specification MIL-C-Z7840C(USAF) dated 12 April 1966 Page 1, para
2、graph 2.1, delete MIL-STD-826 and its title and insert: “MIL-STD-461 Electromagnetic Interference Characteristics Requirements for Equipment.“ Page 2, insert new paragraph 2.2 as follows: “2.2 Other publications. specification to the extent specified herein. The following documents form a part of th
3、is Unless otherwise indicated, the issue in effect on date of invitation for bids or request for proposal shall apply. AMERICAN NATIONAL STANDARDS INSTITUTE, INC. (ANSI) B30.15 - Safety Standard for Mobile Hydraulic Cranes 253.1 - Safety Color Code for Marking Physical Hazards (Application for copie
4、s should be addressed to the American National Standards Institute, Inc. , 1430 Broadway; New York, N.Y. 10018.) DEPARTMENT OF TRANSPORTATION (DOT) Motor Carrier Safety Regulations (Application for copies should be addressed to the Department of Transporta- tion, Federal Highway Administration, Wash
5、ington, D.C. 20591. ) POWER CRANE AND SHOVEL ASSOCIATION (PCSA) PCSA Standard No. 2 - Mobile Hydraulic Crane Standards (Application for copies should be addressed to the Power Crane and Shovel Association, Marine Plaza - Suite 1700, 111 E. Wisconsin Avenue, Milwaukee, WI 53202.) SOCIETY OF AUTOMOTIV
6、E ENGINEERS, INC. (SAE) 587 - Exterior Sound Level for Powered Mobile Construction Equipment 588 - Exterior Sound Level Measurement Procedure for Powered Mobile Construction Equipment 5919 - Sound Level Measurements at the Operator Station for Agricultural and Construct i on Equi pmen t 5931 - Infor
7、mation Report for Hydraulic Power Circuit Filtration FSC 3810 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-.J994 - Criteria for Back-up Alarm Devices (Application for copies should be addressed to the Society of Automotive Engineers, Inc. , Two Pe
8、nnsylvania Plaza, New York, N.Y. U. S. DEPARTMENT OF LABOR Laws and Regulations 29 CFR 1910.95 - Occupational Noise Exposure 29 CFR 1910.180 - Crawler, Locomotive and Truck Cranes 10001 .) (Application for copies should be addressed to the Superintendent of Documents, Government Printing Office, Was
9、hington, DC 20402.)“ Page 2, paragraph 3.5, add, “The shift pattern of the truck chassis shall not be changed. Design of the crane shall conform with safety requirements of ANSI B30.15, PCSA Standard No. 2, and 29 CFR 1910.180.“ Page 3, paragraph 3.5.3.5, line 4, after “automatically“ insert “return
10、 to neutral position and“. Page 4, after paragraph 3.5.3.6, insert new paragraphs as follows: “3.5.3.7 Back-up alarm. A back-up alarm shall be provided on the crane and shall conform to SAE 5994. 3.5.3.8 Noise level. Noise level during stationary crane operations shall be not greater than the limiti
11、ng value specified in SAE 587 when tested in accordance with 4.5.3.6. 3.5.3.9 Strike hazard painting or marking. Cab, counterweight, or other portions of crane that extend beyond the plan outline of the main chassis while superstructure is revolving shall have the lower portion(s) of these areas col
12、or coded in accordance with ANSI 253.1 to denote a strike hazard to personnel on the ground. Colors shall be reflective for ease of night vi si bi 1 i ty. 3.5.3.10 Audible warning device. An audible warning device shall be provided for warning personnel on ground of planned crane motions. The warnin
13、g device control shall be within easy reach of the crane operator while in his normal seated position.“ Page 4, paragraph 3.5.6, line 4, delete “C-124“ and insert “C-5“. Page 4, paragraph 3.6.3, line 22, delete “slow rate, single line“. Page 5, paragraph 3.7.1, line 3, delete “Class as required“ and
14、 insert Tlass D“ . 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-27840C (USAF) AMENDMENT i - Page 5, paragraph 3.7.1.1, delete subparagraph d without substitution. At the end of subparagraph g, add the following: is provided, single windshi
15、eld wiper with windshield washer may be provided.“ At end of subparagraph h add the following: with one forward and one reverse speed, having a line pull of 8,000 pounds on the bare drum shall be located at the forward end of the body. shall be of the free spooling type with built-in wire rope clamp
16、 and fixed drag brake. The winch shall be equipped with not less than 150 feet of 3/8 inch diameter preformed wire rope, 6 X 19 Seale construction, improved plow steel with fiber core and suitable thimble hook spliced in“. Add sub- paragraph i as follows: “i. Engine hour meter.“ Page 5, paragraph 3.
17、7.1.2, delete the entire paragraph and insert: “When a beside-the-engine cab “A power take off driven winch The drum “3.7.1.2 Exceptions to truck requirements. Unless otherwise specified (see 6.2), the following items as offered and described in MIL-T-45354 shall not be provided: a. b. Front mounted
18、 winch.“ Spare wheel or rim with spare wheel carrier, spare tire and tools. Page 5, paragraph 3.7.1.5, delete the entire paragraph and insert: “3.7.1.5 Automatic throttle control. The truck engine shall be equipped with an automatic throttle control device which can be actuated from the crane cab. T
19、he device must be capable of allowing the engine to remain at idle speed until actuated, then immediately bring the engine to governed speed and hold it there as long as the power requirement exists, and return to idle speed.“ Page 6, paragraph 3.7.4, delete the fifth and sixth sentences and substit
20、ute the following: “Hydraulic line circuit and filtration shall be in accordance with SAE 5931 with a 10 micron filter.;mTAt the end of paragraph, add the following: “Means shall be provided in the hydraulic system for bleeding . all air trapped in the system. All rods, which will be exposed during
21、opera- tion, shall have a hard chromium plating with a crack-free thickness suffi- cient to withstand a 30 hour salt water spray test. A certification of conformance is required. Al 1 high pressure hydraul ic hoses and fittings shall be capable of withstanding a bursting test pressure of four times
22、the working pressure. A self energizing or manually operated device shall be provided within the hydraulic power system capable of slowly lowering the rated safe loads in the event of engine or hydraulic system failure. An instruction plate shall be provided including location of the device and oper
23、ating instruction.“ Page 7, paragraph 3.7.8, delete fourth sentence and substitute the following: “A running block and hook of not less than 2 tons capacity shall be provided. The hook shall be a swivel type designed to handle at least 4.5 times the maximum safe load without permanent deformation, a
24、nd shall include a safety latch on the hook. Block assembly shall be provided for attachment of hoist cable for one and two-part purchase. hook block while traveling. assembly for visual and nondustructive testing.“ Means shall be provided to secure The hook block furnished shall permit dis- .- (i 3
25、 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-2704OC (1) 38 m 977770b 0215032 0 W T MIL-C-27840C (USAF) AMENDMENT 1 Page 7, paragraph 3.7.9, at end of first sentence insert the following: cab shall provide a sound level conforming to the req
26、uirements of 29 CFR 1910.95 for an eight hour exposure period when tested in accordance with 4.5.3.6. plate shall be placed in the cab in clear view and shall contain the follow- ing infomation: equipment. Noise level has been measured as DBA under worst conditions (state worst conditions , windows
27、o- closed). to AFR 161-35 for current Air Force hearing protection criter “The If the measured sound level exceeds 84 DBA, an operator caution “CAUTION - Hearing damage may result from operation of this Refer Page 7, paragraph 3.7.9.1, delete first sentence and insert: heater shall be an enclosed ga
28、soline burning type meetinq the desian “The cab construction, and instal lation requirements-of- DOT Motor-Carrier Sfety Regula tion 393.77. II Page 8, paragraph 3.9, line 3, delete “MIL-STD-826, Method 7001“ and insert “MIL-STD-461 for Class 03 Equipment. II Page 11 , paragraph 4.5.3.1, delete seco
29、nd sentence and insert: condition, it shall lift 6,600 pounds to a vertical height of two feet from the ground using a boom radius of 16 feet with the boom at maximum length as determined by the safe load control, revolve 270, then lower to the ground. II Page 11, paragraph 4.5.3.2, delete the entir
30、e paragraph and insert “The crane, in mobile order without using outriggers, shall lift 2,350 lbs. to a vertical height of 2 feet from the ground using a boom radius of 16 ft. with the boom at maximum length, as determined by the safe load control, and revolve 270 without tipping.“ Page 11 , paragra
31、ph 4.5.3.3.a, delete the first sentence and insert: the outriggers extended, a 4,000 lb. load, at a radius of 16 ft. with the boom at maximum length as determined by the safe load control, shall be lifted vertically until the hook is 6 ft. above ground.“ Page 11 , paragraph 4.5.3.3.b. delete the fir
32、st sentence and insert: the outriggers retracted, a 2,000 lb. load at a radius of 16 ft. with the boom at maximum length as determined by the safe load control, shall be lifted vertically until the hook is 6 ft. abovethe ground.“ “In this “With “With Page 12, after paragraph 4.5.3.5 insert new parag
33、raphs as follows: “4.5.3.6 Noise level testing. Crane shall be tested for conformance with noise level requirements of 3.5.3.8 and 3.7.9. Noise level inside cab shall be tested in accordance with SAE 3919 and 29 CFR 1910.95. noise level shall be tested in accordance with the stationary requirements
34、of SAE 588. with MIL-T-45354. 4.5.3.7 Hydraulic hose test. Hydraulic hoses and fittings shall be bench tested to determine conformance to 3.7.4 except that certification by the manufacturer, or certified copies of test reports of tests on identical items previously tested for identical (or greater)
35、pressures will be accepted. External Supplier shall certify that truck noise level is in conformance 4 - Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-27840C( USAF) AMENDMENT 1 4.5.3.8 Crane hook test. The crane hook shall be subjected to a s
36、tatic load of not less than 18,000 pounds for not less than 10 minutes. deformation, after load removal, shall be cause for rejection. The crane hook shall be given a wet or dry ferromagnetic particle test to determine surface or subsurface cracks or discontinuities. used shall show clearly visible
37、particles defining existing discontinuities. Any discontinuities revealed shall be cause for rejection.“ Page 12, paragraph 4.5.5, delete the entire paragraph and insert: “Radio interference suppression test. To determine conformance to 3.9 the vehicle shall be subjected to a radio interference supp
38、ression test as specified. This test shall be conducted with all electrical and hydraulic systems opera ti ng . I Page 13, paragraph 6.2, add subparagraph as follows: wheel, tire, carrier and tools are required (see 3.7.1.2.a).“ Permanent Either method of test “d. When spare Custodian: Air Force - 84 Preparing activity: Air Force - 84 Project No. 381 0-F068 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
