1、MIL-G-52484B(ME) 1 October 1980 SUPERSEDING MIL-G-52484A( ME) 26 January 1977 MILLTARY SPEC IF ICAT ION GRADER, ROAD , MOTORIZED , DIESEL-ENGINE-DRInN, SECTIONALIZED AND NON-SECTIONALIZED This specification is approved for use by the Mobility Equipment Research and Development Command, Department of
2、 the Army, and is available for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This specification covers air-droppable and air transportable heavy duty pneumatic-tired, diesel-engine-driven, 6-wheel, 4-wheel drive, front- wheel steer, articulated frame steer mo
3、tor graders. 1.2 Classification. The graders shall be of the following types, as specified (see 6.2): Type I Type II - Sectionalized (Air Transportable, Air- - Nowsectionalized (Air Transporable and Air-droppable). droppable, and Helicopter Transportable). 2. APPLICABLE DOCUMENTS 2.1 Issues of docum
4、ents. The following documents of the issue in effect on -date of invitation for bids or request for proposal form a part of this specifi- cation to the extent specified herein. SPEC IF ICATION S MILITARY MIL-P-514 MIL-G-76 2 MIL-L-2 104 - Plates, Identification, Instructions - Graders, Road, Packagi
5、ng of. - Lubricating Oil, Internal Combustion Engine and Marking, Blank. Tactical Service. f7U.S. GOVERNMENT PRINTING OFFICE: 1980-703-02314330 FSC 3805 Benefic.ia1 comments (recommendations, additions, .deletions) and any pertinent data which may be of use in improving this document should be addre
6、ssed to: US Army Mobility Equipment Research and Development Command, ATTN: DRDME-DS, Fort Belvoir, VA 22060 by using the self-addressed Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this document or by ,letter, _ - Provided by IHSNot for ResaleNo reproduction
7、or networking permitted without license from IHS-,-,-MIL-G-52484B (ME:) ML-L-2105 MIL-M-7866 MIL-G-10924 MIL-G-23827 MIL-A-46153 MIL-L-4 6 16 7 MIL-E-52798 STANDARDS MILITARY MIL-STD-12 9 MIL-STD -20 9 MIL-STD-669 MIL-STD-8 14 MIL-STD-1188 MIL-STD-14 10 MIL-G-52Y8YB 38- 9 499Ob 0219807 b 9 - Lubrica
8、ting Oil, Gear, Multipurpose. - Molybdenum Disulfide, Technical, Lubrica- - Grease, Automotive and Artillery. - Grease, Aircraft and Instrument, Gear - Antifreeze, Ethylene Glycol, Inhibited, - Lubricating Oil, Internal Combustion - Enamel, Alkyd, Camouflage. tion Grade. and Actuator Screw. Heavy Du
9、ty, Single Package. Engine, Arctic. - Marking for Shipment and Storage. - Slinging and Tiedown Provisions for Lifting and Tying Down Military Equip- ment. - Loading Enviromnent and Related Require- ments for Platform Rigged Airdrop Materiel. - Requirements for Tiedown, Suspenaion and Extraction Prov
10、isions on Military Materiel for Airdrop. - Commercial Packaging of Supplies and Equip- ment . - Methods for Selection of Industrial Engines For End Item Application. MILTARY HANDBOOK AIR FORCE SYSTEM COMMAND I Design Handbook DH1-11 - Air Transportability. (Copies of specifications and standards req
11、uired by contractors in connect-Jn with specific procurement functions should be obtained from the procuring activity or as directed by the contracting officer. 2.2 Other pvbic engine, transmission and hydraulic system, field user reports, including any failures or problem areas, and corrective acti
12、on taken to demonstrate acceptability of the item. stated herein, all items listed as standard equipment in the contractors published specification brochures and catalogs cial customers as standard equipment, shall be furnished. equipped with any optional equipment necessary to comply with requireme
13、nts specified herein. the grader but which has been furnished to the commercial customer, such as special features or allied equipment. components necessary to enable the grader to function reliably and efficiently in sustained operation, regulations governing safety, noise levels, and pollution, wh
14、ich are in effect on the date of invitation for bids or request for proposal. In the case When specified requirements are not or normally furnished to commer- The grader shall be Optional equipment is defined as equipment not standard with The grader shall be equipped with all The grader shall confo
15、rm to all Federal laws and 3.2 Rescription. The grader shall be pneumatic-tired, diesel-engine-driven, 6-wheel, 4-wheel drive, with front wheel steer, leaning front wheels, articulated frame steer. The grader shall be equipped with a power shift transmission. A 12-foot moldboard and a V-type scarife
16、r. operable by one man for general construction work such as course and fine grading, low and high bank sloping, flat and V-ditching, scarifying, and general construction and maintenance of roads. operation with operator seated and seat belt properly fastened. and The grader shall be The grader shal
17、l permit true “sit down“ 3.2.1 Type I. The type I grader with ROPS/FPS removed shall be capable of being loaded and rigged on an air delivery platform in accordance with MIL-STD-669, air transported and air delivered by parachutes. 3.2.2 Type II. The type II grader with ROPS/FOPS removed shall meet
18、requirements specified for type I (see 3.2.1) and shall also be capable of being sectionalized into 2 sections for external air transport by helicopter. Sectionalization material may be removed far airdrops. 3.3 First a,rt.icle, (preproduction models). The contractor shall furnish two graders of eac
19、h type for examination and demonstration within the time frame specified (see 6.2), to prove prior to starting production that his production methods and choice of design detail will produce graders that comply with the requirements of this specification. The examination and demonstrations shall be
20、as specified in Section-4. and demonstration by thecontractor, the Government shall perform a simulated airdrop demonstration on one of each type grader at a site selected by the Following successful completion of the examination 3 Provided by IHSNot for ResaleNo reproduction or networking permitted
21、 without license from IHS-,-,-Government. shall be subject to surveillance and approval by the Government. the preproduction models will be dependent on successful completion of the examination, contractor demonstrations, and the Government conducted simulated airdrop demonstration. The examination
22、and all demonstrations conducted by the contractor Acceptance of 3.4 Production graders, All graders furnished under this specification shall be physically and mechanically identical to the first article graders approved by the Government. 3.5 Material. Material not specified herein shall be selecte
23、d by the cow tractor and shall be subject to all provisions of this specification (see 6.4). 3.6 Safety. All available standard or optional accessories shall be included to provide protection for maintenance and operating personnel from rotating or reciprocating parts and from all parts subject to h
24、igh operational temperatures and ao located as to be a hazard. not endanger personnel, All platforms and steps shall have anti-skid surfaces. The starting system shall be such that the transmissionmust be placed in neutral before the engine can be started or the transmission must be placed in neutra
25、l before the grader can be set into motion. Contractors standard grab irons shall be provided, area of the articulation point, warning of limited personnel clearance during frame articulation and placement of safety pin or bar for the grader operating and transport modes . Exhaust discharges shall b
26、e directed so as to A decal shall be furnished and shall be located in the 3.6.1 Sound level. The exterior sound level of the grader shall not exceed 88 dB(A) when measured in accordance with SAE J88. area occupied by the operator exceeds 85 dB(A) when measured in accordance with SAE J919, a warning
27、 plate containing the following shall be permanently affixed to the grader in a conspicuous protected location. If the sound level in the “WARNING, EAR PROTECTION REQUIRED WHEN OPERATING THIS GRADER“ The plate shall have a yellow background with black lettering and shall be on corrosion-resistant ma
28、terial. 3.6.2 Rollover protective structure (ROPS) and falling objects protective The grader shall be equipped with a removable bolted down The canopy shall be removable and replaceable without cutting structure (FOPS). RQPS/FOPS canopy. or welding. respectively. for use by the operator. provided as
29、 applicable to facilitate canopy removal. provided to facilitate removal of ROPS/FOPS. The ROPS/FOPS shall conform to SAE 51040 and SAE 5231 A seat belt conforming to SAE 5386 shall be properly installed Quick disconnect fittings (electric, etc.) shall be A sling eye(s) shall be 3.7 Physical charact
30、eriS.ticS. 3.7.1 Weight limits. The basic weight of the graders, type I and II without scarifier shall be not less than 28,000 pounds. determined with the grader in a fully serviced condition including fuel, oil, Basic weight shall be 4 Provided by IHSNot for ResaleNo reproduction or networking perm
31、itted without license from IHS-,-,-and accessories used in sectionalization and reassembly shall be stored on the grader or in a demountable container attached to the grader but shall not interfere with the operation of the grader. . 3.9 Performance. The grader and attachments shall withstand the us
32、eage encountered in military operations such as rough and fine grading, ditching, high bank cutting, and sloping, grading in reverse and scarifying. The grader shall withstand crossing roadless rough terrain, including gullies causing the tandems to oscillate inboth directions, fording streams, and
33、negotiating steep lontitudinal and sidehill slopes, without damage. The grader shall be capable of driving at maximum travel speed in transport, being towed by another vehicle, and limited towing of other equipment. 3.9.1 Environmental condition Without the use of -any external means, equip- ped wit
34、h only standard and optional equipment, the engine shall start within five (5) minutes and the gr r shall operate under full-load conditons within fifteen (15) minutes after ine start in any ambient temperature from minus 25 F to plus 120 F. Cold start aids must be i-ntergal with the grader and no a
35、ids may be used which rely upon terna1 support such as an electrical power . source. Hand-held aerosol cans not permitted. The grader shall be capable of operating in hot humid tropical environments and dry dusty environments. Provided by IHSNot for ResaleNo reproduction or networking permitted with
36、out license from IHS-,-,-MIL-G-52484B (ME) 3.9.3 Blade pull. The grader shall develope a blade pull of not less than 16,000 pounds at 2 plus or minus 112 mph, at the specified operating weight, on a dry, level, concrete surface, with no more than 15 percent slip factor. 3.9.4 Stability. The grader s
37、hall negotiate 35 percent side slopes and 60 percent longitudinal slopes without any wheel of the grader losing contact with the ground. is operating under these conditions. All parts requiring lubrication shall be lubricated when the grader 3.9.5 Fording. The grader shall start and operate during a
38、nd after fording operations in fresh water to any depth up to 20 inches including wave action without damage and without leakage of water into reservoirs containing lubricant c. 3.10 Engine. The diesel engine shall meet the requirements of MIL-STD-1410 The diesel engine shall be the engine for appli
39、cation in a class II end item. furnished commercially including all systems, components, accessories, and auxiliaries. shall be equipped with a rain cap or shall be fabricated and mounted to prevent the entry of rain or snow. The engine shall be equipped with a muffler. The exhaust stack 3.10.1 Engi
40、ne horsepower. The applied net horsepower of the engine at the flywheel when measured in accordance with SAE 5816 shall be not less than 135 h or s epower . 3.10.2 Engine cooling system. The contractors standard or optional cooling system meeting the requirements of 3.9.1 shall be provided. 3.10.3 F
41、uel tank. The fuel tank shall be of a type regularly furnished as standard equipment with a capacity for 10 hours of continuous normal operation. The tank shall be equipped with a means for draining water and sediment from the bottom of the tank. 3.10.4 Engine side panels. engine side panels with qu
42、ick-disconnect latches or horizontally or vertically hinged engine compartment doors. The grader shall be equipped with removable 3.11 Drive train. 3.11.1 Transmission. The grader shall be equipped with a power shift transmission capable of being shifted under full engine power through all successiv
43、e forward and reverse gear ratios without deceleration of the grader. Not less than four forward speeds and four reverse speeds shall be provided in the transmission. be placed in neutral before the engine can be started or the transmission must be placed in neutral before the grader can be set into
44、 motion. The starting system shall be such that the transmission must 3.11.2 Torque converter. Graders equipped with a torque converter shall have gear reduction suitable to keep the torque converter working efficiently through- out the entire range of grader speeds. 3.11.3 Tandems and differential.
45、 Tandem oscillation shall be not less than 18 degrees from the horizontal in either direction. Tandem oscillation shall be 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-limited to prevent excessive rotation when the grader is being lifted using t
46、he lifting eyes or suspension provisons. automatic lock-unlock drive train differential. The grader shall have a manual or 3.12 Wheels and tires. Commercial standard demountable wheels or rims shall be provided. Traction type tubless tires shall be furnished and shall have a tread pattern suitable f
47、or grader operation. 13 x 24 with not less than 10-ply rating. type and ply rating. Tire size shall be not less than All tires shall be the same size, 3.13 Steering and braking. 3.13.1 Steering. The grader shall have hydraulically boosted mechanical or full hydraulic power steering, and articulated
48、frame steering. tem shall provide full control of the grader under all normal operating condi- tions and shall provide emergency steering conforming to SAE 553 without engine power. An articulation position indicator shall be furnished. The leaning front wheels shall be capable of leaning at least 1
49、5 degrees right and left. The steering sys- 3.13.2 Braking system. A foot controlled self-adjusting sealed disc service A parking brake system and an emergency stopping system shall be braking system shall be provided and shall be effective on the our driving wheels. provided. The braking systems shall comply with SAE 51152. 3.14 Operators compartment. 3.14.1 - Seat. The contractors standard commercial operators seat shall be provided. access to operating contr
