ATPD 2301A - HMEE DRAFT PD.pdf

DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited.

OPSEC10709.

ATPD-2301A

DRAFT

SUPERSEDING

ATPD-2301

16 JUNE 2014

AUTOMOTIVE TANK PURCHASE DESCRIPTION

TRACTOR, WHEELED, ALL WHEEL DRIVE; WITH ATTACHMENTS

(HIGH MOBILITY ENGINEER EXCAVATOR)

This purchase description is approved for use by the Ground Vehicle Systems Center and is available for use by all Departments and Agencies of the Department of Defense.

1. SCOPE.

1.1 Scope. This specification covers pneumatic tired, diesel engine driven, all-wheel drive tractors with attachments, for excavation of small emplacements, material handling, and general construction tasks; with tactical mobility over rough terrain and high mobility on roadways. The basic tractor, hereinafter referred to as “tractor”, is classified as a self-propelled construction vehicle, meeting federal highway safety standards as well as emission standards for Non-Road Engines. Emissions standards follow exemption Title 40 of the Code of Federal Regulations (CFR), Section 89.908(a)1. All tractors (see 1.2) are conveyable by rail, marine, highway and air modes as defined herein. The tractor will include electronic over hydraulic (EOH) controls. The EOH controls the loader, excavator, auxiliary hydraulic, and stabilizer system. The EOH supports future integration of autonomous technologies.

1.2 Type. The tractors will be of the following types, with attachments as stipulated (see 6.2):

Type I – Heavy; C-130 aircraft transportable and Low Velocity Airdrop (LVAD) capable; CH-47 helicopter transportable within two lifts (objective)

Type II – Light (under 16,600 lbs); C-130 aircraft transportable and Low Velocity Airdrop (LVAD) capable; CH-47 helicopter transportable in a single lift (threshold)

Type IV (Type I with Electronic Over Hydraulic (EOH)) – Heavy; C-130 aircraft transportable and Low Velocity Airdrop (LVAD) capable; CH-47 helicopter transportable within two lifts (objective)

AMSC N/A FSC 2420

INCH-POUND

Comments, suggestions, or questions on this document should be addressed to U.S. Army CCDC, Ground Vehicle Systems Center, ATTN: Standardization Office, FCDD-GVS-IES, MS #267, 6501 E. Mile Road, Detroit Arsenal, MI 48397-5000 or sent by email to usarmy.detroit.ccdc-gvsc.mbx.standardization@mail.mil. Since contact information can change, you may want to verify the currency of this address information using the ASSIST Online database at https://assist.dla.mil.

mailto:usarmy.detroit.ccdc-gvsc.mbx.standardization@mail.mil https://assist.dla.mil/

2. APPLICABLE DOCUMENTS.

2.1 General. The publications listed in this section are specified in sections 3 and 4 of this purchase description. This section does not include publications cited in other sections of this purchase description or recommended for additional information or as examples. While every effort has been made to ensure the completeness of this list, users of this document are cautioned that they must meet all specified requirements of publications cited in sections 3 and 4 of this specification, whether or not they are listed.

2.2 Government documents.

2.2.1 Specifications, standards, and handbooks. The following specifications, standards, and handbooks of the exact revision listed below form a part of this purchase description to the extent specified herein.

INTERNATIONAL STANDARDIZATION AGREEMENTS

AEP-4074 Auxilliary Power Unit Connections for Starting Tactical Land Vehicles

STANAG-3747 Guide Specifications for Aviation Turbine Fuels

(Copies of this publication is available online at https://nso.nato.int/.)

FEDERAL SPECIFICATIONS

A-A-393 – Extinguisher, Fire, Dry Chemical (Hand Portable)

A-A-50271 – Plate, Identification A-A-52550 – Pintle Assembly, Towing, Manual Release, 18 000, 40 000 and 100 000 LBS Capacity A-A-52624 – Antifreeze, Multi-Engine Type A-A-59592 – Can, Fuel, Military: 20-Liter Capacity

DEPARTMENT OF DEFENSE SPECIFICATIONS

MIL-DTL-32361 – Composite Light, Tail Stop, Turn and Marker MIL-DTL-53039 – Camouflage Coating, Solvent Based, Chemical Agent Resistant MIL-DTL-53072 – Chemical Agent Resistance Coating (CARC) System Application Procedures and Quality Control Inspection MIL-DTL-64159 – Coating, Water Dispersible Aliphatic Polyurethane, Chemical Agent Resistant MIL-DTL-81940/1 – Valve, Sampling and Bleed, Hydraulic, Type II Systems MIL-DTL-83133 – Turbine Fuel, Aviation, Kerosene Type, JP-8 (NATO F-34) and

NATO F-35

https://nso.nato.int/

MIL-PRF-11021 – Switch, Vehicular Lights: 24 Volt DC MIL-PRF-2104 – Lubricating Oil, Internal Combustion Engine, Combat/Tactical

Service MIL-PRF-32626 – Lubricating Oil, Internal Combustion Engine, Synthetic Base MIL-PRF-46176 – Brake Fluid, Silicone, Automotive, All Weather, Operational and

Preservative, Metric MIL-PRF-62048 – Air Cleaners, Automotive: Heavy Duty, Dry-Type MS75020 – Connector, Plug, Electrical-12 Contact, Intervehicular, 28 Volt MS52126 – Composite Light-Front Turn, Park and Marker MS51318 – Headlight, Blackout, 24 Volt Waterproof

DEPARTMENT OF DEFENSE STANDARDS

MIL-STD-209 – Interface Standard for Lifting and Tiedown Provisions MIL-STD-461 – Requirements for the Control of Electromagnetic Interference

Characteristics of Subsystems and Equipment MIL-STD-464 – Electromagnetic Environmental Effects Requirements for Systems MIL-STD-810 – Environmental Test Methods and Engineering Guidelines MIL-STD-814 – Tiedown, Suspension, and Extraction Provisions on Military

Materiel for Airdrop, Requirements for MIL-STD-882 Department of Defense Standard Practice System Safety MIL-STD-889 – Galvanic Compatibility of Electrically Conductive Materials MIL-STD-913 – Requirements for the Certification of Externally Transported

Military Equipment by Department of Defense Rotary Wing Aircraft

MIL-STD-1180 – Safety Standards for Military Ground Vehicles MIL-STD-1366 – Interface Standard for Transportability Criteria MIL-STD-1472 – Human Engineering MIL-STD-1791 – Designing for Internal Aerial Delivery in Fixed Wing Aircraft MIL-STD-2169 – High Altitude Electro-Magnetic Pulse Environment

DEPARTMENT OF DEFENSE HANDBOOK

MIL-HDBK-669 – Loading Environment and Related Requirements for Platform

Rigged Airdrop Materiel

(Copies of these publications are available online at https://quicksearch.dla.mil.)

2.2.2 Other Government documents, drawings, and publications. The following other Government documents, drawings, and publications form a part of this document to the extent specified herein. Unless otherwise specified, the issues are those in effect on the date of the solicitation.

https://quicksearch.dla.mil/

CODE OF FEDERAL REGULATIONS

Title 29, Part 1910 – Occupational Safety and Health Standards Title 29, Part 1926 – Safety and Health Regulations for

Construction (Copies of these publications are available online at https://www.govinfo.gov/app/collection/cfr/.)

ARMY TACOM DRAWINGS

13229E8014 – Rifle Mounting Bracket 13229E8016 – Rifle Mounting Bracket 12585018 – Paint System for Exterior and Interior Army

Materiel, Revision B

(Copies of these publications can be requested by email at usarmy.detroit.devcom-gvsc.mbx.drawing-request@army.mil.)

ARMY TACOM PURCHASE DESCRIPTIONS

ATPD-2206 – Batteries, Storage: Lead-Acid, "Maintenance Free” (Metric)

(Copies of this publication can be requested by email at usarmy.detroit.devcom-gvsc.mbx.standardization@army.mil.)

ARMY TACOM REPORTS

REPORT NO. CR-82-588-003 Rev 1, Feb 1988 – Design Guide for Vehicle Diagnostic Connector Assemblies

(Copies of this publication can be requested from the PD-TMDE Redstone Arsenal at apats@redstone.army.mil).

2.3 Non-Government publications. The following documents form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these publications are those cited in the solicitation or contract.

AMERICAN NATIONAL STANDARDS INSTITUTE (ANSI)

ANSI Z535.1 – Safety Colors ANSI Z535.2 – American National Standard for

Environmental and Facility Safety Signs ANSI Z535.3 – Criteria for Safety Symbols

(Copies of these publications are available online at https://www.ansi.org/.)

https://www.govinfo.gov/app/collection/cfr/ mailto:usarmy.detroit.devcom-gvsc.mbx.drawing-request@army.mil mailto:usarmy.detroit.devcom-gvsc.mbx.drawing-request@army.mil mailto:usarmy.detroit.devcom-gvsc.mbx.standardization@army.mil mailto:usarmy.detroit.devcom-gvsc.mbx.standardization@army.mil mailto:apats@redstone.army.mil https://www.ansi.org/

AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM)

ASTM D2487 – Standard Practice for Classification of Soils for Engineering Purposes (Unified Soil Classification System)

(Copies of these publications are available online at https://www.astm.org/.)

ASSOCIATION OF AMERICAN RAILROADS (AAR)

General Rules Governing the Loading of Commodities on Open-Top Cars

(Copies of this publication are available online at https://aarpublications.com.)

INTERNATIONAL ORGANIZATION FOR STANDARDS (ISO)

ISO 3411 – Earth-Moving Machinery – Physical Dimensions of Operators and Minimum Operator Space Envelope

ISO 3499 – Earth-Moving Machinery – Falling-Object Protective Structures – Laboratory Tests and Performance Requirements

ISO 5010 – Earth-Moving Machinery – Wheeled Machines – Steering Requirements

ISO 6015 – Earth-Moving Machinery Hydraulic Excavators and Backhoe Loaders Methods of Determining Tool Forces

ISO 6682 – Earth-Moving Machinery – Zones of Comfort and Reach for Controls

ISO 7451 – Earthmoving Machinery – Volumetric Rating for Hoe-Type and Grab-Type Buckets of Hydraulic Excavators and Backhoe Loaders

ISO 7464 – Earth-Moving Machinery – Method of Test for the Measurement of Drawbar Pull

ISO 14397-1 – Earth-Moving Machinery – Loaders and Backhoe Loaders – Part 1: Calculation of Rated Operating Capacity and Test Methos for Verifying Calculated Tipping Load

(Copies of this document are available online at https://www.iso.org/.)

NATIONAL ELECTRICAL MANUFACTURERS ASSOCIATION (NEMA)

NEMA Z535.2 – Environmental and Facility Safety Signs https://www.astm.org/ https://aarpublications.com/ https://www.iso.org/

(Copies of this document are available online at https://www.nema.org/.)

SOCIETY OF AUTOMOTIVE ENGINEERS (SAE)

SAE J31 – Hydraulic Backhoe Lift Capacity SAE J115 – Safety Labels of Off-Road Machines SAE J163 – Low Tension Wiring and Cable Terminals and Splice Clips SAE J185 – Access Systems for Off-Road Machines SAE J198 – Windshield Wiper Systems, Trucks, Buses, and Multipurpose Vehicles SAE J318 – Automotive Air Brake Line Couplers

(Gladhands), Recommended Practice SAE J336 – Truck Cab Interior, Sound Level for SAE J381 – Windshield Defrosting Systems Test

Procedure and Performance Requirements - Trucks, Buses, and Multipurpose Vehicles

SAE J386 – Operator Restraint System for Off-Road Work Machines

SAE J514_202411 – Hydraulic Tube Fittings SAE J516 – Hydraulic Hose Fittings SAE J517 – Hydraulic Hose SAE J518/2_202312 – Hydraulic Flanged Tube, Pipe, and Hose

Connections, Four-Screw Flange Connection SAE J524 – Seamless Low-Carbon Steel Tubing

Annealed for Bending and Flaring SAE J525 – Welded and Cold Drawn Low-Carbon Steel

Tubing Annealed for Bending and Flaring SAE J534 – Lubrication Fittings SAE J553 – Circuit Breakers SAE J680 – Location and Operation of Air Brake

Controls in Motor Truck Cabs SAE J695 – Turning Ability and Off Tracking – Motor

Vehicles SAE J917 – Marine Push/Pull Control Cables SAE J925_199306 – Minimum Service Access Dimensions for

Off-Road Machines SAE J985 – Mirror, Design, Rear View, Vision Factors, Considerations In SAE J994 – Alarm – Backup – Electric Laboratory

Performance Testing SAE J1013_200711 – Measurement of Whole Body Vibration of the Seated Operator of Off-Highway Work Machines

SAE J1040_200305 – Performance Criteria for Rollover Protective https://www.nema.org/

Structures (ROPS) for Construction, Earthmoving, Forestry and Mining Machines

SAE J1069 – Oil Change System for Quick Service of Off- Road Self-Propelled Work Machines

SAE J1074 – Engine Sound Level Measurement Procedure SAE J1127 – Battery Cable SAE J1128 – Low Tension Primary Cable SAE J1166 – Sound Measurement-Off-Road Self-

Propelled Work Machines- Operator-Work Cycle

SAE J1176 – External Leakage Classifications for Hydraulic Systems, Recommended Practice

SAE J1284 – Blade Type Electrical Fuses SAE J1308 – Fan Guard for Off-Road Machines SAE J1453/1_201906 – Specification for O-Ring Face Seal

Connectors: Part 1 – Tube Connection Details and Common

SAE J1503 – Performance Test for Air-Conditioned, Heated, and Ventilated Off-Road, Self- Propelled Work Machines

SAE J1587 – Joint SAE/TMC Electronic Data Interchange Between Microcomputer Systems in Heavy- Duty Vehicle Applications

SAE J1614 – Cooling System Metallic Caps and Filler Necks

SAE J1708 – Serial Data Communications between Microcomputer Systems in Heavy-Duty Vehicle Applications, Recommended Practice

SAE J1939 – Recommended Practice for a Serial Control and Communications Vehicle Network

SAE J1939/13 – Off-Board Diagnostic Connector SAE J2077 – Miniature Blade Type Electrical Fuses SAE J2360 – Lubricating Oil, Gear Multipurpose (Metric) SAE AMS-STD-595 – Colors, Used in Government Procurement

(Copies of these documents are available online at https://www.sae.org/.)

TIRE AND RIM ASSOCIATION, INC (TRA)

Tire and Rim Association (T&RA) Standards Manual

(Copies of this document is available online at https://www.us-tra.org/.)

2.4 Order of precedence. Unless otherwise noted herein or in the contract, in the event of a conflict between the text of this document and the references cited herein, the text of this https://www.sae.org/ https://www.us-tra.org/ document takes precedence. Nothing in this document, however, supersedes applicable laws and regulations unless a specific exemption has been obtained.

3. REQUIREMENTS.

3.1 First article. When specified (see 6.2), a sample shall be subjected to first article inspection in accordance with 4.2.

3.2 Physical characteristics. The standard issue Type IV tractor shall consist of a tractor equipped with a front loader attachment (see 3.2.4.1); a rear mounted backhoe (see 3.2.4.2.1);

portable tools, as specified (see 3.2.4.3); and when specified, provisions for a radio set (see 3.2.3.6.3). The standard issue Type II tractor shall consist of a tractor equipped with a front loader attachment (see 3.2.4.1); a rear mounted backhoe (see 3.2.4.2.1); and portable auxiliary tools, as specified (see 3.2.4.3). The tractor shall include electronic over hydraulic (EOH) controls. The EOH controls, at a minimum, the loader, excavator, auxiliary hydraulic, and stabilizer system. Alternative configurations may be required, per the provisions of 3.2.4 as specified in the acquisition requirements (see 6.2). The term “tractor”, used throughout this document, applies to either Type II or IV, or both, as applicable to the contract or purchase order.

3.2.1 Materials. Materials shall be of sufficient durability to meet all performance requirements, in any of the environments, specified herein.

3.2.1.1 Prohibited materials. The system shall not have prohibited materials (including alloys containing prohibited materials) present in or on any delivered systems or support equipment, required for operation and sustainment of the system, or used in final manufacture and assembly processes. (T=O). Prohibited materials are described in 3.2.1.1.1.

3.2.1.1.1 List of prohibited materials and exceptions. The following are prohibited materials: asbestos, beryllium, Class I and Class II Ozone Depleting Substances (ODS), hydrofluorocarbons (HFCs), hexavalent chromium, cadmium, mercury, lead, radioactive materials, other Group 1 Agents classified as "carcinogenic to humans" by the International Agency for Research on Cancer (IARC) Monographs, and per and poly fluoroalkyl compound ( PFAS)-containing Aqueous Film Forming Foam (AFFF).

The following exceptions are allowed without prior approval from the Government:

- Cadmium and hexavalent chromium on electrical connectors and back shells used to mate with cadmium electrical connectors on Government Furnished Equipment (GFE) or used in an Automatic Fire Extinguishing System (AFES).

- Products listed under "Priming" and "Topcoating" in MIL-DTL-53072, Table I

- Lead-acid batteries

- Lead solder

- Leaded battery terminal adaptors/clamps

- Silica used in adhesives and sealants

- Fuels specified for use in the requirements of this contract

- Steel containing up to 0.35 % lead by weight

- Aluminum containing up to 0.4 % lead by weight

- Copper and Brass alloys containing up to 4 % lead by weight

- Beryllium and Beryllium alloys used in electrical components

- Mercury containing components compliant with European Union (EU) Directive

2011/65/EU (RoHS 2)

- Trace amounts of identified prohibited materials contained in base materials and/or alloys. For the purposes of this contract trace amounts are defined as <0.1% by weight for carcinogens and <1% by weight for all other materials

- HFCs in fire extinguishing systems in crew-occupied spaces

- R134a in ground vehicle air conditioning systems

3.2.1.2 Recycled, recovered, or environmentally preferable materials. Recycled, recovered (see 6.8.1), or environmentally preferable materials should be used to the maximum extent possible provided that the material meets or exceeds the operational and maintenance requirements and promotes economically advantageous life-cycle costs. Used, rebuilt, or remanufactured parts, pieces, and components shall not be incorporated into the tractor.

3.2.1.3 Dissimilar metals. The system shall not use dissimilar metals (see 6.8.2) in intimate contact with each other unless protected per MIL-STD-889.

3.2.1.4 Deterioration prevention and control. The tractor shall be fabricated from compatible materials, inherently corrosion resistant, or treated to provide protection against the various forms of corrosion and deterioration to which they are susceptible.

3.2.1.5 Finish. All external surfaces of the tractor are suitable for painting, except those that reach a temperature of 400°F, shall have a chemical agent resistant coating (CARC) topcoat in accordance with (IAW) MIL-DTL-64159 and be cleaned, pretreated, and primed IAW MIL- DTL-53072 and TACOM drawing number 19207-12585018 REV B, Paint System for Exterior and Interior Army Materiel. Those that reach 400°F during operation shall be coated with a high temperature resistant paint of limited reflectivity. As specified in the production order (see 6.2), the color shall be green, color no. 34094 of SAE-AMS-STD-595 or tan, color no. 33446 of SAE- AMS-STD-595. Surfaces not suitable for painting shall be treated to or inherently provide a surface of limited reflectivity, as shall interior components visible from the exterior. Other internal components may be finished with the manufacturer's standard colors and paint, plating, or treatment. Fabrics, plastic, rubber hoses, glass, and machined surfaces are not to be CARC-treated, unless otherwise specified. Further, CARC is not to be applied where it interferes with component functions such as surfaces requiring electrical contact, heat transmission, or tight tolerances.

3.2.1.5.1 Camouflage. When specified (see 6.2), the tractor shall be finished in a Government furnished camouflage pattern (see 6.5).

3.2.2 Configuration. The fully equipped tractor as defined in 3.2 shall be self-deployable and capable of equal utility, at rated capacities, both on and off road. Powertrain components shall be compatible with and properly matched to all driven mechanisms simultaneously, attachments included. The tractor shall have attachment mounting provisions that permit installation and removal of attachments without requiring disassembly of any other component.

The vehicle structure shall be capable of withstanding the strain, vibration, and other detrimental effects incident to off road travel and the utilization of attachments and tools, and conform to the requirements of 3.4. Whereas this specification cites only inch-pound units, products made to metric equivalents are acceptable (see 6.7).

3.2.3 Components. Tractors shall have a common vehicle design between types, utilizing interchangeable (see 6.8.3) components as far as practicable. Instruments, controls, and interfaces for attachments and tools shall be identified as to their function by means of indelible symbols, and levers and buttons shall be color-coded. The EOH steering system shall be furnished, with a full or partial circle, steering wheel. If hydraulic steering is supplied, it shall be serviced by a separate hydraulic system or have a priority circuit. Secondary steering in accordance with ISO 5010 shall be provided in the event of engine failure at any speed. Any push/pull cable not completely housed within a component shall be a waterproof, heat resistant, anti-friction type, conforming to requirements for marine cables in SAE J917. Fuel, air, and hydraulic lines and fittings shall be clean, free from leaks, and secured to preclude chafing on adjacent lines or components. Fuel, air, and hydraulic lines shall be readily distinguishable and not have common or interchangeable couplings. All securing pins (hitch pins, lynch pins, etc) shall be tethered to the vehicle or major component; unless the location of the tether makes it susceptible to failure during normal operation.

3.2.3.1 Engine. The tractor shall be supplied with a liquid or air-cooled diesel engine, capable of the performance specified herein while operating with diesel fuel oil and aviation, kerosene type turbine fuel, grade JP-8 in accordance with MIL-DTL-83133, and F-24 in accordance with NATO STANAG-3747. The engine oil filter location shall be labeled, specifying filter type, and placed near the point of filter installation. The engine supplied with the production vehicle shall be compliant with the EPA emissions standards for nonroad diesel engines.

3.2.3.1.1 Cooling system. The cooling system shall provide adequate cooling to the engine, in any of the environments specified herein, operating at 85 percent of the rated horsepower. If the engine is air-cooled, the thermal conditions of the engine shall be monitored by a cylinder head temperature gauge that provides a constant readout at the operator’s position.

If the system is also used to maintain the temperature of the transmission, it shall do so without degradation of cooling to the engine, as described. If water-cooled, the thermal conditions of the engine shall be monitored by a coolant temperature gauge that provides a constant readout at the operator’s position. Initial fill of the cooling system shall be a mixture of 50 percent water and 50 percent antifreeze conforming to A-A-52624. If the cooling system fan is provided with a thermostatic control, in the event of its failure, the fan shall continue to operate while the engine does. Fan guard shall be in accordance with SAE J1308.

3.2.3.1.2 Lubricating Oil(s). All parts and components shall be compatible with specified military lubricants. The engine, transmission, and hydraulic systems shall operate on oils referenced in MIL-PRF-2104 and MIL-PRF-32626 if required according to prevailing ambient temperature. Initial lubrication and all subsequent lubrication shall be compatible with military lubricant referenced in MIL-PRF-2104. Gear lubricating oil shall conform to SAE J2360.

3.2.3.1.3 Engine air induction system. The air induction system shall not require disassembly for normal vehicle maintenance or element servicing. The air ducts and any portion of the system affected by the fording requirement (see 3.3.2.2) shall withstand or be sealed against water entry. The air cleaner shall be a dry type, with a safety element and an inertial type pre-cleaner, in accordance with MIL-PRF-62048; located so that removal for transportation is not required. An airflow restriction indicator, visible from the operator’s position, shall be provided.

3.2.3.1.4 Oil sampling valves. Oil sampling valves meeting the performance requirements of MIL-DTL-81940 shall be provided on the engine; for hydraulic systems with capacities greater than 5 gallons; and transmission, if applicable. Valves shall be located so that a true representation of oil is obtained; but personnel taking samples, with the engine running, are not exposed to danger. Sampling valves shall be labeled “engine”, “hydraulic”, or “transmission”, as appropriate. To maximize data density, valves shall be located in return lines, in areas of turbulent flow, and prior to filters.

3.2.3.1.5 Fuel system. The fuel system shall conform to FMCSR 393.65 and 393.67, and include a fuel strainer/filter; a water separator, with provisions for draining sediment; and a self-priming, fuel injection pump. The strainer/filter shall be located between the fuel tank and transfer pump and shall be readily accessible for inspection and replacement.

3.2.3.1.5.1 Fuel tanks. The tractor shall be provided with fuel tank(s), protected from damage, of a capacity that will permit 10 hours of continuous operation with any of the specified attachments (see 3.2.4). Each fuel tank shall be supplied with a drain plug, at its lowest point, removable with common hand tools and without requiring removal of any other tractor component. Manual shut-off valve(s) shall be furnished at the tank(s), on the fuel supply line before the fuel filter(s); labeled "FUEL SHUT-OFF", with double ended arrows indicating the direction of operation and the functional result (i.e. open, closed). Readily discernable at or on the fuel fill port, or its cap, "Diesel Fuel" shall be indelibly marked in letters not less than 1-inch high. The fuel fill port(s) shall be provided with removable strainers, and shall be able to receive fuel from a refueling nozzle with a 2-inch O.D. spout with sufficient air release clearance for a flow rate of not less than 20 gallons per minute. The filler shall be located to accept fuel from a 5-gallon can conforming to A-A-59592, by a person on the ground or a surface provided on the tractor for standing. Fill port(s) shall be supplied with captivated safety filler cap(s) made to preclude mud build-up and intrusion into the tank. A sealed cap and vent shall be furnished if the port is below fording depth (see 3.3.2.2). The fuel system design shall be such that fuel spilled during refueling will not contact any part of the exhaust or electrical system.

3.2.3.1.6 Exhaust system. The exhaust system shall be leak-proof and the point of exhaust shall be located so as not to create a toxic or nausea hazard to the operator or personnel performing maintenance tasks with the engine operating. The system shall also provide protection against burn hazards to personnel. The exhaust pipe(s) shall be configured or equipped to prevent entry of precipitation or shall provide for drainage of precipitation without damage to the muffler; and for naturally aspirated engines, furnished with a spark-arresting muffler, located away from the fuel system and any other flammable components.

3.2.3.2 Transmission. The vehicle shall be equipped with an automatic/powershift transmission and meet requirement 102.1 of MIL-STD-1180. The automatic/powershift transmissions shall have a downshift inhibitor and an override to preclude inadvertent reversal of tractor direction. The transmission shall be capable of withstanding stall operation for a minimum of 30 seconds without damage, permanent deformation, or exceeding a fluid temperature limit of 250°F. A neutral start switch and filter(s) with replaceable elements shall be provided.

3.2.3.3 Hydraulic system. The tractor shall be equipped with a hydraulic system to operate front attachments (see 3.2.4.1), rear attachments (see 3.2.4.2), and portable auxiliary tools (see 3.2.4.3). The system shall provide for simultaneous operation of the rear attachment and any auxiliary tool without degradation. Circuits and components of the system shall be compatible with and operate on fluids conforming to MIL-PRF-2104 and MIL-PRF-32626, if required according to prevailing ambient temperature. The system shall restrict the operating temperature of the hydraulic system fluid to not greater than 220°F.

3.2.3.3.1 Hydraulic reservoir. The reservoir shall have a filler neck with a positively retained strainer that permits a gravity fill rate of not less than 10 gallons per minute, using oil at a temperature of 70°F (± 5°F). The filler shall be located to allow for filling from a standard 5-gallon container. A tethered filler cap, and breathers equipped with filters shall be provided. If the reservoir is sealed, the cap or neck shall provide for equalization of pressure, to facilitate opening. A means to check the oil level shall be provided, with "Full" and "Add" indicators, for both hot and cold conditions. The fill port shall be labeled "HYDRAULIC FILL" in letters not less than 1-inch high.

3.2.3.3.2 Hydraulic oil filter. The system shall be provided with a replaceable filter, located to be easily changed without requiring draining the reservoir or removal of components other than the cap and labeled specifying filter type. The housing shall be equipped with a pressure relief by-pass to prevent filter collapse. A clearly visible indicator shall be provided to show when the filter requires changing.

3.2.3.3.3 Hydraulic lines. Hoses shall be routed to provide support, ease of maintenance, minimum bends, and maximum protection; and provisions made to preclude damage due to chafing and stress. Hose in assemblies, except suction lines, shall conform to the requirements of SAE J517 type 100R1, 100R2, and 100R10. Suction line hose shall conform to SAE J517, 100R4. Hoses shall be rated not less than the relief valve pressure of the circuit to which it is applied. Minimum bend radii of hoses shall not be less than that specified in SAE J517. Tubing shall be in accordance with SAE J524, SAE J525, having a burst pressure rated not less than 3 times the relief valve pressure of the circuit.

3.2.3.3.4 Ports, fittings, and connections. All hydraulic ports, fittings, and connections shall conform to SAE J514_202411, J516, J518_202312 and J1453/1_201906 as applicable.

Pressure tube fittings shall have a minimum burst pressure 3 times the operating pressure.

3.2.3.3.5 Couplings. Quick disconnect, dry-break couplings that seal both ends of lines shall be used on all hydraulic lines where separation is required for attachments. The couplings shall seal the lines without leakage for 50 connections and disconnections; the loss of fluid on disconnecting thereafter shall not exceed 1/2 fluid ounce. Coupling halves shall be permanently identified and be provided with captivated covers. The covers of the mating coupling halves shall fit together when the coupling is engaged. If hydraulic return and supply line coupling halves can be connected, when attachments are removed, captivated covers are not required. Flush face, quick disconnect couplings shall be furnished on all hydraulic lines for auxiliary tools and associated equipment.

3.2.3.3.6 Engine emissions.

3.2.3.3.6.1 Pollution controls. The system engine(s) shall not use pollution control technologies that are affected by the sulfur level of the specified fuels during operation, maintenance, or sustainment (T=O).

3.2.3.3.6.2 Utilize engine technology. The system engine(s) should be of the newest design(s) and incorporate the engine technology(ies) that meet all performance requirements specified in this specification while operating on the specified fuels.

3.2.3.3.6.3 Technology compliance level. The system engine(s) shall be compliant with

EPA "aa" emission standards (T=O).

3.2.3.3.6.4 Emissions exemption labeling. The system engine(s) shall meet National

Security Exemption labeling requirements IAW EPA regulations per 40 CFR 1068.225, with a label on the engine that is visible after the engine is installed (T=O).

3.2.3.4 Electrical system. A 24-volt electrical system shall be furnished in accordance with FMCSR 393.27 through 393.33. The alternator shall provide sufficient amperage to operate all electrical components of the tractor simultaneously, to include lighting, and power to the radio, as well as charge the battery. The system shall incorporate reverse polarity protection and means to prevent starter engagement when the engine is running. Each electrical circuit shall be protected by a circuit breaker or fuse in accordance with SAE J553, SAE J1284 or SAE J2077, with labels indicating the function served by the circuit. Spare fuses, in each amperage rating used on the vehicle, shall be present and located on the fuse panel. A wiring harness and connector shall be furnished, to mate the tractor with the electrical system on a towed vehicle.

The connector shall mate with military connectors in accordance with MS75020; be furnished with a spring-loaded cover; and labeled "TRAILER CONNECTOR" in letters not less than 1.00 inches high. All connectors and switches shall be protected from adverse effects of the elements.

3.2.3.4.1 Slaving components. The tractor shall be equipped with a 24-volt slave receptacle that shall mate with connectors conforming to AEP-4074. The receptacle shall permit charging of the batteries and slave starting of the engine from an external power source;

and provide a power source for charging and slaving other equipment. The slave receptacle shall be installed on the exterior of the tractor near the battery enclosure, accessible to personnel standing on the ground. The slave receptacle shall be labeled "SLAVE, 24 VOLTS" in letters 1-inch high.

3.2.3.4.2 Lighting. All tractor lights, reflectors, and wiring shall be in accordance with requirement 108.1 of MIL-STD-1180, except that a rectangular 24-Volt headlight with replaceable bulb shall be acceptable. Lights and reflectors shall not be mounted on vehicle bumpers; and lights shall be mounted in a protected location. The tractor shall be equipped with turn signals and emergency flashers. Emergency flashers, when activated, shall be overridden by the brake lights when the brakes are applied. All lights shall be controlled from the operator's compartment. In addition to individual controls, the tractor shall be equipped with a master switch to control service lights, lights, and instrument panel lights. For headlight application, use of non-DOT approved 24-Volt bulbs is acceptable.

3.2.3.4.3 Blackout lights. The tractor shall be equipped with the following:

a. One left front light conforming to MS51318 or LED equivalent.

b. Two front marker lights conforming to MS52126 or LED equivalent.

c. Two rear stop/taillights conforming to MIL-DTL-32361 or LED equivalent.

The blackout headlight shall be mounted on the left top of cab adjacent to the work light of the plan outline of the tractor, positioned to provide illumination with the front attachments in the travel position. The blackout front marker lights shall be mounted on the front of the tractor, as far apart as practical, one each side of the vertical centerline at the same level. The blackout taillights shall be mounted in a protected location, recessed not less than 1/2 inch into hole or behind the guard. Blackout lights shall be operated by an interior switch conforming to MIL- PRF-11021. All interior and external lights, the horn, and the backup alarm shall be made inoperable when blackout lights are used except for warning lights, such as temperature and oil lights, which shall remain operative in the blackout mode.

3.2.3.4.4 Interior lighting. The tractor shall be equipped with instrument lighting and indicators, readily discernable to the full range of personnel (see 3.6.5). Intensity of instrument and gauge lighting shall be adjustable. Interior lights, gauges and instruments that remain in operation when blackout lighting is selected, to include warning lights, shall not emit energy outside of the 380-700 nanometer wavelength range. Interior lights, gauges and instruments that remain in operation when blackout lighting is selected, to include warning lights, shall be designed for use during blackout operations. They shall not create a light source that will degrade operations with night vision goggles to include temporarily bloom, wash out, or create large halo effects.

3.2.3.4.5 Implement floodlights. Two forward mounted, universally adjustable, floodlights shall be provided, shock mounted forward of the operator's compartment/cab, to illuminate the front attachment and the work plane in front of and on both sides of the tractor.

Two backward mounted, universally adjustable, floodlights shall be provided, shock mounted to the rear of the operator's compartment/cab, to illuminate the rear attachment and the work plane behind and on both sides of the tractor. Each fixture shall have a weatherproofed housing and a heat-resistant lens with a weather-resistant seal, housing the lamp. Each floodlight shall have a lateral and vertical beam spread of 45°, minimum. Average life shall be rated at 1,000 hours.

Infrared lights or floodlights with integrated infrared lights are desired for blackout night operations to aid operators wearing night vision goggles. Infrared lights shall be capable to conform with combat arms tactical light discipline.

3.2.3.4.6 Wiring. Weatherproof wire and connector assemblies shall be in accordance with SAE J1128/J163. Wiring, to include numbering, shall be in accordance with SAE J1614;

and routed in a protected location.

3.2.3.4.7 Battery. The battery(s) shall be of sufficient size to start tractor at all environmental conditions specified herein. A switch shall be furnished to disconnect all electrical power to the tractor. The switch shall be installed in an inconspicuous location inside the cab as near to the battery ground connection as practical; and labeled for identification and designation of the on and off positions. Battery cables conforming to SAE J1127 shall be furnished with insulated terminal covers. Positive and negative cable terminals shall be identified with a red sleeve, labeled "+" and a black sleeve, labeled "-", respectively.

3.2.3.4.7.1 Battery mounting. The battery shall be mounted above fording depth (see 3.3.2.2) and be accessible for removal and service without requiring removal of components other than a cover, if one is provided. Battery mounting shall not interfere with access to components; shall support the entire battery base; and be positioned so that the electrolyte level is discernable without removing the battery. Battery restraining clamps shall be provided to hold the battery in a fixed position. The battery compartment shall have provisions for drainage and venting, and shall be protected against corrosion and short-circuiting. The battery compartment shall be sized to fit Military 6TMF batteries per ATPD 2206.

3.2.3.4.8 Diagnostics. The tractor shall have diagnostics IAW 3.2.3.4.8.1 and 3.2.3.4.8.2.

In addition, when practical, the Type IV shall have the diagnostic ability to identify major system LRU failures (e.g. check engine lights, blinking / flashing lights etc.). The tractor must be compatible with current U. S. Army Standard Unit Level Test Equipment which is presently WATS (Wireless At-Platform Test Set) with the auxiliary WATS (Wireless At-Platform Test Set). Vehicle diagnostic connectors and circuits must be compatible with current standard Army test equipment. Vehicle diagnostic connectors shall be easily accessible, hard mounted and environmentally protected. The diagnostic connectors shall be equipped with a cover, which shall prevent entrance of moisture and contaminants.

3.2.3.4.8.1 Electronic. The vehicle shall feature either a single data bus network as specified by SAE J1939, J1708, or a multiple data bus network in accordance with J1939, which defines the interface between J1708 and J1939. The vehicle's data bus shall have built-in sensors that provide fault isolation capability sufficient to identify failures of major components of each system monitored by the data bus. Diagnostic outputs shall be transmitted to the vehicle mounted J1939 female 9 pin Deutsch Connector, which shall conform to SAE J1939-13 'Off-board Diagnostic Connector' dated July 1999, using a format conforming to SAE J1587.

3.2.3.4.8.2 Analog. For all systems for which only analog diagnostic capability exists, the tractor shall have installed a vehicle Diagnostic Connector Assembly (DCA) harness and related transducers that will allow testing a vehicle without disassembly IAW the Design Guide for

Vehicle Diagnostic Connector Assemblies (DCA) Report No. CR-82-588-003 Rev 1, Feb 1988.

However, this provision shall be waived in the case that all the following requirements are met:

a. All systems for which only analog diagnostic capability exists can be interrogated by transducers available in the Transducer Kit (TK) of the WATS (Wireless At-Platform Test Set), or otherwise readily available in the maintenance inventory and compatible with the WATS.

b. All such systems incorporate test connections that are physically compatible with those transducers.

c. All test connections are readily accessible, and transducers can be installed without disassembly of the vehicle.

3.2.3.5 Chassis. The chassis and related subsystems shall be of sufficient durability, strength, and torsional flexibility to withstand the stresses imposed in any of the operations intended to be performed by the tractor; and by its deployment on- and off-road. The tractor shall be fitted with a stabilizing subsystem (outriggers, etc.), as necessary, to permit safe operation.

3.2.3.5.1 Axles. All axles shall be powered. Where required by traction design (see 3.2.3.5.2), an inter-axle differential shall be provided, equipped with a lock-up device with automatic disengagement above 10 miles per hour (mph). As far as feasible, differentials, axles and other components shall be interchangeable, front to rear, with wheel offset the same on all axles to allow interchangeability of wheel assemblies. All axles shall be properly vented and equipped with lubricated wheel bearings and seals adequate to meet fording requirement (see 3.3.2.2).

3.2.3.5.2 Torque limiting differentials. An off-road traction control device or positive direct drive to each wheel, with minimum effect to vehicle steering, shall be provided. If a full locking or controllable biasing traction control device is utilized; it shall feature a manual engagement and disengagement control, capable of being implemented without stopping the tractor. A warning light shall be installed and labeled "Differential Locked Out", in a position clearly visible to the operator that shall be illuminated when engaged.

3.2.3.5.3 Suspension. Damping shall be provided at all axles. The tractors shall be equipped with a front suspension lockout for forklift operation, capable of being engaged and disengaged by the operator seated in the cab. A warning light shall be installed and labeled "Front Suspension Locked Out", in a position clearly visible to the operator that shall be illuminated when engaged.

3.2.3.5.4 Wheels and Tires. The tractor shall be equipped with single tire and wheel assemblies on each axle. The rims shall be of a single-piece or bolt-together type construction, and conform to Tire and Rim Association recommendations for the type and size of tire furnished. All tire and wheel assemblies shall be balanced; and be identical. Tires and rims shall meet requirements 119.1 and 120.1 of MIL-STD-1180. The tractor shall be equipped with multi-purpose, all traction non-directional tread, tubeless, radial tires, with ratings conforming to Tire and Rim Association (T&RA) Standards Manual recommendations for the type and size of tire.

Tires shall be equipped with adequate valve extensions, with valve caps, mounted to permit checking tire inflation using only the onboard pressure gauge (see 3.2.3.9). Ballast or hydro-inflation of tires is not permissible, but a run-flat feature is required. A multi-piece run-flat feature repairable at the field level is desired. A spare tire and wheel assembly identical to those provided on the axles shall be furnished, mounted on a spare tire carrier installed in a readily accessible location. A Central Tire Inflation System is desired.

3.2.3.5.5 Service brakes. The tractor shall be equipped with a complete, dual brake system in accordance with requirements 105.1 or 121.1 of MIL-STD-1180. Brake hoses shall meet requirement 106.1 of MIL-STD-1180. A fully active 4-wheel anti-lock brake system (ABS) shall be provided to regulate braking power. A hydraulic brake system shall allow use of brake fluid compatible with MIL-PRF-46176 and meet the requirements specified in 3.3.2.5. When disc brakes are furnished, a disc pad wear indicator system shall be provided. A complete trailer brake control system shall be furnished that includes, but is not limited to, the following:

a. Independent control for trailer brakes; and coincident control with tractor pedal.

b. Trailer stoplight operative with foot control and with control for trailer brakes.

c. An interconnection to mate with the electrical system on the towed trailer (see 3.2.3.4).

d. An interconnection for service to the trailer brakes.

e. Controls located convenient to operator arranged for right hand operation (see 3.2.3.6).

f. Identification of emergency and service lines, and connectors.

3.2.3.5.5.1 Air system. When an air service brake system is provided, the following shall be required. Storage reservoir tanks capacity shall conform to requirement 121.1 of MIL-STD- 1180. The tank shall be equipped with a check valve, safety valve, and a drain valve that is readily accessible. Air control valves, relay emergency valve or other system giving equivalent functionality, and an air pressure gauge with a low air pressure warning light and buzzer shall be installed. An evaporator or air dryer, and air brake service and emergency line couplings conforming to SAE J318 shall be provided.

3.2.3.5.6 Parking brake. A parking brake system shall be furnished that shall conform to requirement 105.1 or 121.1 of MIL-STD-1180; except that it shall hold on a 40 percent grade, pointing either up or down hill. The force required by the operator to apply parking brakes as described above shall not be greater than 24 pounds for hand actuated parking brakes, and 57 pounds for foot actuated parking brakes.

3.2.3.5.7 Hydraulic damper with gas spring. A commercially available, oil hydraulic damper shall be furnished to influence the nature of movement and vibration through the opening and closing of the armored door. The contractor shall certify that the product offered meets the characteristics of this description and that the product conforms to the producer's own drawings, specifications, standards, and quality assurance practices and is the same product offered for sale in the commercial marketplace. The damper shall not have rust, fins, burrs, or other imperfections which may affect appearance, usability, or durability, and must have following characteristics:

a) Extension Force (static, at 10 mm from full extension): 320 +/- 20 N

b) Compression Force (static, at 5 mm from full compression): 500 N max

c) Dynamic Friction: 45 N max

d) Permissible Operating Temperature Range: -22°F to 176°F

e) Compressed Length: 322.5 mm max

f) Extended length: 586 +/- 2 mm

g) Dynamic damping in both directions of movement, commencing at 55 mm from full extension and full compression

3.2.3.6 Operator cab. The tractor shall be equipped with a 2-person, weatherproofed, insulated, rigid cab; equipped with windshields, fore and aft, and opening doors with transparent, vertical or horizontal roll up or sliding windows on each side. Glazing, in accordance with requirement 205.1 of MIL-STD-1180, shall be provided for the windshields. SAE J985 may be consulted for information and guidance on visual considerations. Door locks and retainers shall be in accordance with requirement 206.1 of MIL-STD-1180. The cab shall have means to provide ventilation to the occupants with the windows closed. The compartment shall be furnished with upholstered seats, with the driver's seat being individually adjustable, fore and aft and up and down, both armrest and backrest, and located to provide maximum unobstructed visibility for the operator. The range of adjustments shall be sufficient to accommodate the full range of military personnel (see 3.6.5). Seating systems, seatbelts, and seatbelt assemblies and anchorages provided for the personnel while the vehicle is in motion shall be in accordance with requirements 207.1, 208.1, 209.1 and 210.1 of MIL-STD-1180. However, if a separate seat belt is provided when the operator is seated in the excavating position, that seatbelt may be in accordance with SAE J386. Seatbelts shall be accessible to the occupants at all times, unless purposely stored. Seatbelts shall be fully retractable with provisions for off floor storage and shall not automatically lock out when the vehicle is on extreme slopes so as to preclude the operator/passengers from dismounting and re-entering the vehicle. Compartment design shall conform to 3.6.5.2 and 3.6.5.4. and requirement 302.1 of MIL-STD-1180.

3.2.3.6.1 Gauges and instruments. Compartment design shall conform to 3.6.5, and controls shall be arranged in compliance with SAE J680, identified according to function and meet requirement 101.1 of MIL-STD-1180. The tractor shall be equipped with the following instruments and gauges, at a minimum, readily visible to the full range of military personnel, seated in the driver's seat:

a. Voltmeter or ammeter.

b. Fuel gauge.

c. Engine oil pressure gauge.

d. An engine oil low-pressure red indicator light or audible alarm.

e. Engine coolant temperature (water-cooled) or cylinder head temperature gauge (air-cooled).

f. An engine high-temperature red indicator light or audible alarm

g. Torque converter or hydrostatic transmission temperature gauge.

h. A transmission high-temperature red indicator light or audible alarm.

i. Air pressure gauge with an audible alarm to indicate low air pressure.

j. Speedometer with odometer.

k. Engine tachometer.

l. Hour meter (a minimum of 9999…