1、 1 ctober- 1980 SUPERSEDING MIL-T-52509B(ME) 16 October 1972 MILITARY SPECIFICATION TRACTOR, FULL-TRACKED, LOW-SPEED, DIESEL-ENGINE-DRIVEN; SEC TIONAL IZE D AND NON- SE C T IONAL I ZE D This specification is approved for use by the Mobility Equipment Research and Development Command, Department of t
2、he 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 transportable, air-droppable, and helicopter transportable diesel-engine-driven, full-tracked tractors. 1.2 Classification. ,The tractors shall be of the
3、following types, as specifi- ed (see 6.2): Type I” - Type l - NowCectionalized (Air Transportable, and Air-Droppable) . Sectionalized (Air Transportable, Air-Droppable and Helicopter Transportable). 2. APPLICABLE DOCUMENTS 2.1 Issues of documents. The following documents of the issue in effect on da
4、te of invitation for bids or request for proposal form a part of this specifi- ,. cation to the extent specified herein: SPECIFICATIONS . .- MILITARY MI L-P- 5 14 MIL-L-2104 , - Lubricating Oil, Internal Combustion MIL-L- 2 105 - -Lubricating Oil,. Geail, Multipurpose. - Plates, Identification, Inst
5、ruction and Marking, Blank. Engine, Tactical Service. , F.SC 2410 ,. Beneficial comments (recommendations, additions data which may be o use in improving thia document should be addressed to: U.S Army Mobility Equipment Research and Development Command, ATTN: DRDME-DS , Fort Belvoir, VA 22060 by usi
6、ng the self-addressed Standardization Docyment . Improvement Proposal (DD Form 1426) appearing at the end of this document or by letter. deletions) and any pertinent .- Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-T-5 2% 9C( ME) MIL-T-3351 MI
7、L-M- 7 86 6 MIL-G-10924 MI L- G- 23 82 7 MIL-A-46153 MIL-L-4616 7 MIL-E-52798 STANDARDS MILITARY MIL-STD-12 9 MIL-STD-209 MIL-STD-66 9 MIL-STD-8 14 MIL-STD-118 8 MIL-STD-1410 - Tractor, Full-Tracked, Low Speed; Tractor, Wheeled, Agricultural; and Tractor, Wheeled, Industrial; and Their Attachments,
8、Packaging of. - Molybdenum Disulfide, Technical, Lubrication Grade . - Grease, Automotive and Artillery. - Grease, Aircraft and Instrument, Gear and - Antifreeze, Ethylene Glycol, Inhibited, Heavy - Lubricating Oil, Internal Combustion Engine, - Enamel, Alkyd, Camouflage. Actuator Screw. Duty, Singl
9、e Package. Arctic . - Marking for Shipment and Storage. - Slinging Eyes and Attachments for - Loading Environment and Related Require- - Requirements for Tiedown, Suspension and Lifting and Tying Down Military Equipment ments for Platform Rigged Airdrop Materiel. Extraction Provisions on Military Ma
10、teriel for Airdrop. - Commercial Packaging of Supplies and Equip- ment . - Methods for Selection of Industrial Engines for End Item Application. MILITARY HANDBOOK AIR FORCE SYSTEM COMMAND De 8 ign Handbook DH1- 1 1 - Air Transportability. (Copies of specifications required by contractors in connecti
11、on with specific procurement functions should be obtained from the procuring activity or as directed by the contracting officer. 1 cation to the extent specified herein. effect on date of invitation for bids or request for proposal shall apply. 2.2 Other publications; The following documents form a
12、part of this specifi- Unless otherwise indicated, the issue in TECHNICAL INFORMATION PACKAGE (Application for copies should be addressed to US Army Mobility Equipment Research and Development Command, ATTN: DRDME-H, Fort Belvoir, VA 22060.) SOCIETY OF AUTT)MOTIVE ENGINEERS (SAE) SAE Handbook. 2 Prov
13、ided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-i-_ MIL-T-52507C 24 7777906 0178778 I a 4 a MIL-T-5 250 9C ( ME ) (Application for copies should be addressed to the Society of Automotive Engineers, 400 Commonwealth Drive, Warrendale, PA 15096. ) 3. REQUI
14、REMENTS 3.1 General. The tractor shall be the latest model of the standard product of the contractor and shall have demonstrated industry acceptability by having been manufactured, marketed, and sold in significant numbers to the commercial public for the same or similar- application, interfacing wi
15、th the same or similar components, except as specified herein, for at least 1 year prior to invitation for bids or request for proposal. commercial production units in this 1 year period are acceptable. of a recently introducted item, the contractor shall submit sufficient valid industrial operation
16、al/test data including all test reports for the item and its components, such as; engine, transmission and hydraulic system, field user reports, including any failures or problem areas, and corrective action taken to demonstrate acceptability of the item. When specific requirements are not stated he
17、rein, all items listed as standard equipment in the contractors published specification brochures and catalogs, or normally furnished to commercial customers as standard equipment, shall be furnished. The tractor shall be equipped with any optional equipment necessary to comply with requirements spe
18、cified herein. standard with the tractor but which has been furnished to the coiimiercial customer, such as special features or allied equipment. equipped with all components necessary to enable the tractors to function reliably and efficiently in sustained operation. The ttactors shall conform to a
19、ll federal laws and regulations governing safety, noise levels, and pollution, which are in effect on the date of invitation for bids or request for proposal. Product improvements incorporated in the In the case Optional equipment is defined as equipment not The tractors shall be . 3.2 Description.
20、The type I and II tractors shall be diesel-engine-driven, crawler typ?, with oscillating tracks and shall be equipped with a Rollover Protective Structure (ROPS) and Falling Object Protective Structure (FOPS), towing winch, drawbar, angledozer, and a hydraulic system for operation of attachments. 3.
21、2.1 Type I. The type I tractor with ROPS/FOPS and winch removed (if required) 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 tractor with ROPS/FOPS and winch removed (
22、if required) shall meet the requirements specified for type I (see 3.2.1) and ohall also be capable of being sectionalized into two (2) sections for external air transport by helicopter sectionalization material may be removed for airdrop. 3.3 First article (preproduction models). The contractor sha
23、ll furnish two (2) tractors of each type for examination and demonstration within the time frame specified (see 6.21, to prove prior to starting production that his production methods and choice of design detail will produce tractors that comply with the requirements of this specification. The exami
24、nation and demonstrations shall be as specified in Section 4. Following successful completion of the Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-T-5 2N SC( ME examination and demonstra ion by the contractor, the Government shall perform a sim
25、ulated airdrop demonstration on one of each type tractor at a site selected by the Government. The examination and all demonstrations conducted by the contractor shall be subject to surveillance and approval by the Government. Acceptance of the preproduction models will be dependent on successful co
26、mpletion of the examination, contractor demonstrations, and the Government conducted s imulated airdrop demonstration. 3.4 Production tractors. All tractors furnished under this specification shall be physically and mechanically identical to the first article tractors approved by the Government. 3.5
27、 Material. Material not specified herein shall be selected by the con- tracte; 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 rotat
28、ing or reciprocating parts and from all parts subject to high operational temperatures and so located as to be a hazard. not endanger personnel. All platforms and s teps shall have anti-skid surfaces. The starting system shall be such that the transmission must be placed in neutral before the engine
29、 can be started or the transmission must be placed in neutral before the tractor can be set into motion. shall be provided. Exhaust discharges shall be directed so as to Contractors standard grab irons 3.6.1 Sound level. The exterior sound level of the tractors shall not exceed 88 dB(A) when measure
30、d in accordance with SAE 588. If the sound level in the area occupied by the operator exceeds 85 dB(A) when measured in accordance with ME 5919, a warning plate containing the following shall be permanently affixed EO the tractor in a conspicuous protected location. (“CAUTION: EAR PROTECTTON REQUIRE
31、D WHEN TRACMR IS OPERATING“). The plate shall have a yellow background with black lettering and shall be on corrosiowresistant material. 3.6.2 Rollover s tructuri- ROPS/FOPS canopy. protective structure (ROPS) and falling object protective The tractors shall be equipped with a removable bolted down
32、The canopy shall be removable and replaceable without cutting or welding. A seat belt conforming to SAE 5386 shall be properly installed for use by the operator, applicable to facilitate canopy removal. facilitate removal of ROPS/FOPS. protective screen. The ROPS/FOPS shall conform to SAE 31040 and
33、CAE 5231, respectively. Quick disconnect fittings (electric, etc.) shall be provided as A slinging eye(s) shall be provided to The rear of the ROPS shall be covered by a Front sweeps are not required. 3.7 Physical characterist.ics. 3.7.1 Weight limits. The type I and II tractors without the removabl
34、e ROPS canopy, sectionalization kit and winch, if required, but, with all other attachments, accessories, coolant, lubricating and hydraulic systems filled to capacity and with not: less than 25 percent nor more than 75 percent fuel shall have a base weight of not more than 30,600 pounds. sectionali
35、zed into two (2) sections shall weigh not more than 16,000 pounds per 8 ection, The type II tractor when 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- MIL-T-52509C 24 m 7797906 0198800 b m MIL-T-5 250 %(ME) 3.7.2 Dimensions. The overall width an
36、d length of the type I and II tractors with attachments mounted shall not exceed 105 inches and 288 inches respectively. rigged for airdrop, the reducible height of the tractors, including grousers, should be not more than 91 inches. canopy shall be required to obtain the reduced height. The tractor
37、s shall be operable after component removal. If the reducible height exceeds 91 inches, the contractor must demonstrate prior to step 1 proposal date that his tractor can be rigged so as to conform to the 100 inch limit, and withstand the forces encountered in the simulated airdrop impact test (see
38、4.5.2.12) , without damage or permanent deformation. In order to conform to a height limitation of 100 inches when No major component removal, except ROPS 3.8 Sectionalization. The type II tractor less ROPS and winch if required, shall be capable of being sectionalized into two sections for helicopt
39、er transport. The weight of either section shall not exceed 16,000 pounds. powered section shall be drivable and steerable under its own power for a distance of 50 feet over relatively flat unimproved areas. tools furnished with the tractor under field conditions without the assistance of other powe
40、red equipment shall not exceed 4 hours. not permitted. reassembly shall be stored on the tractor or in a demountable container attached to the tractor but shall not interfere with the operation of the tractor. The Reassembly time with Cutting and welding are Components and accessories used in sectio
41、nalization and 3.9 Performance. The tractors and attachments shall withstand the usage en- countered in military operations such as dozing, ditching, backfilling, slope operation, winching and operation in arid, abrasive soils, and in all types of weather as specified herein, without breakage, malfu
42、nction, or permanent defor- mation. 3.9.1 Environmental conditions. Without the use of any external means, equip ped with only standard and optional equipment, the engine shall start within five (5) minutes and the tractor shali operate under full-load conditions within fifteen (15) minutes after en
43、gine start in any ambient temperature from minus 25 F to plus 120 F. aids may be used which rely upon external support such as an electrical power source. of operating in hot humid tropical environments and dry dusty environments. Cold start aids must be integral with the tractor and no Hand-held ae
44、rosol cans are not permitted. The tractor shall be capable 3.9.2 Travel.speed. The tractors without towed load, shall travel at not less than the following speeds when the engine is operating at full-load governed speed: (a) Low gear forward - 1.4 mph. (b) High gear forward - 6.0 mph, (cl Low gear r
45、everse - 1.4 mph. (d) High gear reverse - 6.0 mph. 3.9.3 Drawbar pull. The tractors equipped as specified herein shall deliver not less than 24,000 pounds drawbar pull at a speed of not less than 1.0 mph. This pull shall be reserve tractive force as defined in SAE 5872. 5 Provided by IHSNot for Resa
46、leNo reproduction or networking permitted without license from IHS-,-,-_ flL-T-5250qC 24-m ff790b olqaflol MIL-T-52509C(ME) 3.9.4 StabflkQ. The tractors shall operate on 35 percent side slopes and 60 percent longitudinal slopes, or any combination thereof, without either track losing contact with th
47、e ground. All moving parts requiring lubrication shall be lubricated when the tractor is operating under these conditions. The tractors shall start and operate during and after shallow fording in fresh water to any depth up to and including 20 inches including wave action without damage or leakage o
48、f water into reservoirs containing lubricants. 3.9.5 F.ording. 3.10 .Engine. The diesel engine shall meet the requirements of MIL-STD-1410 The diesel engine shall be the engine for application in a class II end item. furnished commercially including all systems, components, accessories, and auxiliar
49、ies. fabricated and mounted to prevent the entry of rain or snow. The exhaust stack shall be equipped with a rain cap or shall be 3.10.1 Engine horsepower. The applied net horsepower of the engine at the flywheel when measured in accordance with SAE 5816, shall be not less than 105 3.10.2 Engine cooling system. The contractors standard or optional cooling 3.10.3 Fuel tank. eystem megting the requirements of 3.9.1 shall be provided. The fuel tank shall be of a type
