ATPD-2414B__M1269_Type_II_LEUT.pdf

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DISTRIBUTION STATEMENT A. Approved for public release: distribution unlimited.

Comments, suggestions, or questions on this document should be addressed to U.S. Army RDECOM, Tank Automotive Research Development and Engineering Center, ATTN: RDTA- SIE-ES-PLEP-PLDE-DIS, MS #268, 6501 E. 11 Mile Road, Warren, MI 48397-5000 or sent by email to usarmy.detroit.rdecom.mbx.tardec-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.

METRIC

ATPD-2414B

4 April 2017

SUPERSEDING

ATPD-2414A

30 August 2016

PURCHASE DESCRIPTION

M1269 TYPE II LIGHT ENGINEER UTILITY TRAILER (LEUT)

1. SCOPE

1.1 Scope. The M1269 Type II Light Engineer Utility Trailer (LEUT) is a pintle towed light utility trailer providing a small equipment transport capability. The Type II LEUT will transport construction enablers such as unarmored/armored skid steer loaders (SSL) and unarmored/armored backhoe loaders (BHL). The Type II LEUT is a flat decked trailer with adjustable ramps and tail rated for a 12 ton (10886.22 kilograms (kg)) minimum payload.

1.2 Type of purchase description. This purchase description contains both the performance requirements and definitions for the Type II LEUT. The trailer performance requirements should have priority over definitions in the event of any conflict.

1.3 Required and desired. Within this purchase description, the requirement refers to the minimum threshold acceptable (required). Desired refers to the Army’s objective it would like to achieve. Required is also referred to as threshold, and desired is also referred to as objective.

2. APPLICABLE DOCUMENTS

2.1 General. The documents listed in this section are specified in sections 3 or 4 of this purchase description. This section does not include documents 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, document users are cautioned they must meet all specified requirements of documents cited in sections 3 and 4 of this specification, whether or not they are listed.

mailto:usarmy.detroit.rdecom.mbx.tardecstandardization@mail.mil https://assist.dla.mil/

ATPD-2414B

2.2 Government documents.

2.2.1 Specifications, standards, and handbooks. The following specifications, standards, and handbooks form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are those cited in the solicitation or contract.

INTERNATIONAL STANDARDIZATION AGREEMENTS

STANAG 4007 - Electrical Connectors between Prime Movers, Trailers and Towed Artillery

(Copies of these documents are available from http://nso.nato.int/nso/.)

FEDERAL SPECIFICATIONS

TB43-0209 - Color, Marking, and Camouflage Painting of Military Vehicles, Construction Equipment and Materials Handling Equipment

TT-C-490 - Chemical Conversion Coatings and Pretreatments for Metallic Substrates (Base for Organic Coatings)

COMMERCIAL ITEM DESCRIPTIONS

A-A-52611 - Valves and Valves Spuds, Caps, and Cores, Pneumatic Tire A-A-59295 - Corrosion Preventive Compounds, Cold

Application (For New and Fielded Motor Vehicles and Trailers)

DEPARTMENT OF DEFENSE SPECIFICATIONS

MIL-DTL-15024 - Plates, Tags, and Bands for Identification of

Equipment, General Specification for MIL-DTL-53039 - Coating, Aliphatic Polyurethane, Single

Component, Chemical Agent Resistant MIL-DTL-53072 - Chemical Agent Resistant Coating (CARC) System

Application Procedures and Quality Control Inspection

MIL-DTL-53084 - Primer, Cathodic Electrodeposition, Chemical Agent Resistant

MIL-DTL-64159 - Camouflage Coating, Water Dispersible Aliphatic Polyurethane, Chemical Agent Resistant

MIL-PRF-10924 - Grease, Automotive and Artillery MIL-PRF-23377 - Primer Coatings: Epoxy, High-Solids http://nso.nato.int/nso/

MIL-PRF-32212 - Light Emitting Diode (LED) Composite Stop, Rear Turn Signal and Tail Lamps with Infra-Red Secure Blackout Tail and Blackout Stop Lamps

MIL-PRF-32348 - Powder Coating, Camouflage Chemical Agent Resistant Systems

DEPARTMENT OF DEFENSE STANDARDS

MIL-STD-171 - Finishing of Metal and Wood Surfaces MIL-STD-209 - Interface Standard for Lifting and Tiedown

Provisions MIL-STD-642 - Identification Markings of Combat & Tactical

Transport Vehicles MIL-STD-810 - Environmental Engineering Considerations and

Laboratory Tests MIL-STD-889 - Dissimilar Metals MIL-STD-1179 - Lamps, Reflectors and Associated Signaling

Equipment for Military Vehicles 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

(Copies of these documents are available from http://quicksearch.dla.mil/.)

ARMY REGULATION

AR 70-38 - Research, Development, Test & Evaluation of Material for Extreme Climatic Conditions

AR 750-1 - Army Materiel Maintenance Policy AR 750-59 - Corrosion Prevention and Control for Army

Materiel

(Copies of these documents are available from http://www.apd.army.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 of these documents are those cited in the solicitation or contract.

SURFACE DEPLOYMENT AND DISTRIBUTION COMMAND TRANSPORTATION

ENGINEERING AGENCY (SDDCTEA) PUBLICATIONS

TEA PAM 70-1 - Transportability for Better Deployability

(Copies of this pamphlet are available from http://www.tea.army.mil/pubs/pubs_order.htm.)

http://quicksearch.dla.mil/ http://www.apd.army.mil/ http://www.tea.army.mil/pubs/pubs_order.htm

MISCELLANEOUS SPECIFICATIONS AND PROCEDURES

ERDC/GSL SR-13-2 - Procedures for one-pass vehicle cone index TOP 1-1-014 - Ride Dynamics TOP 2-2-002 - Emergency Lane Change TOP 2-2-602 - Acceleration; Maximum and Minimum Speeds TOP 2-2-608 - Braking Wheel Vehicles TOP 2-2-609 - Steering Performance TOP 2-2-610 - Gradeability and Side Slope Performance TOP 2-2-611 - Standard Obstacles TOP 2-2-612 - Fording NATC/YTC SOP - Road Departure and Recovery Test NATO AVTP 03-160W - Double Lane Change Maneuver TP-94-01 - Transportability Test Procedures

(Copies of these documents are available online at https://vdls.atc.army.mil/.)

DEPARTMENT OF TRANSPORTATION (DOT)

49 CFR 393 - Parts and Accessories Necessary for Safe Operation 49 CFR 393.41 - Parking Brake System 49 CFR 393.52 - Brake Performance 49 CFR 393.70 - Coupling devices and towing methods, except for driveaway-towaway operations 49 CFR 393.201 - Frames 49 CFR 393.207 - Suspension Systems 49 CFR 571 - Federal Motor Vehicle Safety Standards (FMVSS) 49 CFR 571.108 - Lamps, Reflective Devices, and Associated

Equipment 49 CFR 571.119 - New Pneumatic Tires for Motor Vehicles with a

Gross Vehicle Weight Rating (GVWR) of more than (10,000 pounds) and Motor Cycles

49 CFR 571.120 - Tire Selection and Rims 49 CFR 571.121 - Air Brake Systems

(Copies of these documents are available from www.fdsys.gov.)

https://vdls.atc.army.mil/ http://www.fdsys.gov/

U.S. ARMY TACOM DRAWINGS

12469117 - Corrosion Protective Coating for Fasteners, Organic

Type 12480694 - Paint systems for Steel, Exterior surfaces, Green

(Copies of these documents are available from U.S. Army RDECOM, Tank Automotive Research Development and Engineering Center, ATTN: RDTA-SIE-ES-PLEP-PLDE-DIS, MS #268, 6501 E. 11 Mile Road, Warren, MI 48397-5000 or can be requested by sending an email to usarmy.detroit.rdecom.mbx.tardec-standardization@mail.mil.)

U.S. ARMY DESIGN GUIDES

Army Design Guide for Corrosion Prevention of Combat Vehicles

(Copies of this document are available from https://www.dtic.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 the documents are those cited in the solicitation or contract.

AMERICAN WELDING SOCIETY (AWS)

AWS D1.1/A1.1M - Structural Welding Code – Steel AWS D1.2/A1.2M - Structural Welding Code – Aluminum AWS D1.3/A1.3M - Structural Welding Code – Sheet Steel

(Copies of these documents are available from www.aws.org.)

ASTM INTERNATIONAL

ASTM A109/A109M - Standard Specification for Steel, Strip, Carbon (0.25 Maximum Percent), Cold-Rolled

ASTM D610 - Standard Practice for Evaluating Degree of Rusting on Painted Steel Surfaces

ASTM D714 - Standard Test Method for Evaluating Degree of Blistering of Paints

ASTM D1171 - Standard Test Method for Rubber Deterioration - Surface Ozone Cracking Outdoors (Triangular Specimens)

ASTM D1654 - Standard Test Method for Evaluation of Painted or Coated Specimens Subjected to Corrosive Environments

(Copies of these documents are available from www.astm.org.)

mailto:usarmy.detroit.rdecom.mbx.tardecstandardization@mail.mil https://www.dtic.mil/ http://www.astm.org/

EUROPEAN UNION DIRECTIVE

2011/65/EU - Directive of the European Parliament and of the Council on the Restriction of the Use of Certain Hazardous Substances in Electrical and Electronic Equipment

(Copies of these documents are available from http://eur-lex.europa.eu/en/index.htm)

EUROPEAN TYRE AND RIM TECHNICAL ORGANISATION

European Tyre and Rim Technical Organisation Standards Manual

(Copies of these documents are available online at http://www.etrto.org/.)

SAE INTERNATIONAL

SAE AMS-STD-595 - Colors Used in Government Procurement SAE J267 - Wheels/Rims - Trucks and Bus - Performance

Requirements and Test Procedures for Radial and Cornering Fatigue

SAE J318 - Automotive Air Brake Line Couplers (Gladhands) SAE J534 - Lubrication Fittings SAE J588 - Turn Signal Lamps for use on Motor Vehicles Less than 2032 mm in Overall Width SAE J702 - Brake and Electrical Connection Locations - Truck-

Tractor and Truck - Trailer SAE J1100 - Motor Vehicle Dimensions SAE J1292 - Automobile and Motor Coach Wiring SAE J1889 - L.E.D. Signal and Marking Lighting Devices SAE J1992 - Wheels/Rims – Military Vehicles – Test Procedures and Performance Requirements SAE J2014 - Pneumatic Tire/Wheel/Runflat Assembly

Qualifications for Military Tactical Wheeled Vehicles

SAE J2497 - Power Line Carrier Communications for Commercial Vehicles

(Copies of these documents are available from www.sae.org.)

TIRE AND RIM ASSOCIATION, INC.

Tire and Rim Association Year Book

(Copies of this document are available online at www.us-tra.org.)

http://eur-lex.europa.eu/en/index.htm http://www.etrto.org/ http://www.sae.org/ http://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 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 production vehicle inspection (FPVI). When specified, the contractor shall furnish the trailer subjected to first production vehicle inspection in accordance with 4.1.1.

3.2 Production qualification test (PQT). Unless otherwise specified in the contract or delivery order, the trailer, complete with its components and accessories, shall be evaluated by the Government during PQT (see 4.1.2). Trailers selected for PQT shall be made with production hard tooling and processes and be fully representative of the trailers proposed to be furnished under this specification. These trailers shall be submitted for inspection to determine conformance to this specification.

3.3 Recycled, recovered, environmentally preferable, or biobased materials. Recycled, recovered, environmentally preferable, or biobased materials should be used to the maximum extent possible, provided the material meets or exceeds the operational and maintenance requirements, and promotes economically advantageous life cycle costs.

3.4 General design. The trailer is considered a tactical rear area support system due to its mission profile, including some off road travel and extreme climatic conditions. All performance requirements and definitions in this purchase description are concurrent requirements. Ease of maintenance and servicing considerations shall be incorporated into the design without introducing new, special tools in the Army supply system (see 4.2).

3.4.1 Accessibility. Verify in accordance with 4.2.1. The design of the trailer and any optional equipment shall permit access for routine servicing and access for replacement and adjustment of component parts/accessories while personnel are wearing any of the following:

a. Personal protection equipment (PPE) (body armor, deltoid & auxiliary protector set

(DAPS), side small arms protective inserts (SAPI) and ballistic helmet).

b. PPE and mission oriented protective posture (MOPP) IV gear.

c. Wearing PPE and arctic gear.

3.4.2 Safety and design. (Verification, see 4.2.2.)

a. The trailer and furnished accessories shall comply with all 49 CFR 571 and 49 CFR 393 regulations applicable to a trailer of this weight class at the time of manufacture, except for the following:

(1) There is no license plate area requirement.

(2) The anti-lock braking system (ABS) warning light will be located in accordance with 3.13.10.

b. The trailer and furnished accessories shall comply with MIL-STD-1180.

c. The trailer, parts, and components shall be free of sharp projections and edges which may cause injury to the operator or maintainer. Operators and maintenance personnel shall not be unknowingly exposed to rotating or moving parts, hot surfaces, electrically energized components, components containing high pressures, or any other inherently hazardous components or systems. All hand holds and steps shall be an integral and permanent part of the trailer. A removable ladder, if provided, shall be securely stored in a readily accessible location. All step surfaces and work areas shall be provided with a non-skid surface.

3.4.3 Disposal. The trailer system design shall incorporate disposal of the system in full compliance with applicable federal and state environmental quality laws and regulations (see 4.2.3).

3.5 Performance. The trailer shall show no evidence of part failure, deformation, permanent set, or interference between parts, as applicable, when towed, both empty and when loaded with rated payload to include reliability and maintainability (R&M) testing (see 3.6.1, 3.6.2, and 4.3).

3.5.1 Payload. The trailer shall have a rated payload capacity of at least 12 tons (10886.22

kg) ((15 tons (13607.77 kg) desired) and be sufficient to haul the payloads listed in Table I, detailed in Table II (see 4.3.1).

TABLE I Possible payload combinations.

Payload combinations:

All SSLs or BHLs may be unarmored or armored Type II SSL

SSL attachment box Type II SSL + attachment box

BHL

TABLE II. Payload details.

Equipment

Weight kg (lb)

Maximum

Length cm (inch) Maximum

Width cm (inch) Maximum

Height cm (inch) Maximum

SSL attachment box 1769 (3900) 236.73 (93.2) 181.36 (71.4) 130.30 (51.3)

Type II SSL 4127.69 (9100) 358.39 (141.1)

269.24 (106)1

186.69 (73.5)

203.20 (80) Type II SSL with 4432.05 armor (9771)

BHL 8073.94 698.50 (275)

240.03 (94.5)

328.93 (129.5) (17800) [boom up]

736.60 (290) [boom up]

265.68 (104.6) BHL with armor 9852.03 (21720) [boom extended] [boom extended]

1 Without attachments.

3.5.2 Side slopes. The LEUT Type II with BHL with armor weighing at least 9852.03 kg (21720 lb) and an assumed center of gravity (CG) height of 110.24 cm (43.4 inches) above the bed when towed by its prime movers at gross combined weight (GCW) shall be capable of operating in forward and reverse on a 30 percent side slope. Load conditions causing the prime mover and trailer combination to have less than 30 percent side slope capability shall be identified and reviewed for restriction from side slope operation (see 4.3.2). The following characteristics shall be observed:

a. Wheel lift resulting in inadequate control of the vehicle trailer combination.

b. Vehicle trailer combination shall be parked on side slopes and perform a braking operations of service and parking brake and remain stationary for 15 minutes.

c. Vehicle slope interface slip shall be noted.

3.5.3 Longitudinal slopes. The LEUT Type II with BHL with armor weighing at least

9852.03 kg (21720 lb) and an assumed CG height of 110.24 cm (43.4 inches) above the bed when towed by its prime movers at GCW shall be capable of operating in both directions on a 30 percent (threshold) and 40 percent (objective) longitudinal grade. Slight motion associated with brake engagement prior to vehicle trailer combination becoming stationary is acceptable (see 4.3.3).

3.5.4 Lateral stability. The LEUT Type II with BHL with armor weighing at least 9852.03 kg

(21720 lb) and an assumed CG height of 110.24 cm (43.4 inches) above the bed while operating at GCW on a paved surface shall not degrade the lateral stability of the prime mover under all conditions, but shall maintain a minimum capability of steady state 0.40g lateral acceleration without loss of stability (see 4.3.4).

3.5.5 Emergency lane change. The LEUT shall be tested in accordance with NATO AVTP 03-160W and TOP 2-2-002 with the following conditions. LEUT Type II with BHL with armor weighing at least 9852.03 kg (21720 lb) and an assumed CG height of 110.24 cm (43.4 inches) above the bed, when towed by its prime movers, shall not degrade the capability of the required prime mover by more than 10 percent of its achieved gross vehicle weight (GVW) capability.

The GCW testing shall be capable of performing an emergency lane change maneuver on a paved surface and on a gravel surface without any signs of instability (see 4.3.5).

3.5.6 Turning ability. The LEUT Type II with BHL with armor weighing at least 9852.03 kg

(21720 lb) and an assumed CG height of 110.24 cm (43.4 inches) above the bed, being towed by its prime movers, shall be able to negotiate a right angle turn posed by an intersection of two roads 9.144 m (30 feet) wide (wall to wall) (threshold) and 7.315 m (24 feet) wide (wall to wall) (objective) without stopping (see 4.3.6).

3.5.7 Tracking ability. The LEUT Type II while unloaded and with BHL with armor weighing at least 9852.03 kg (21720 lb) and an assumed CG height of 110.24 cm (43.4 inches) above the bed, being towed by its prime movers, shall be able to track behind the prime mover in a straight line within 7.6 cm (3 inches) of center (threshold) or 5.1 cm (2 inches) (objective) in accordance with 49 CFR 393.70 (see 4.3.7).

3.5.8 Vehicle cone index (VCI). The LEUT Type II, loaded or unloaded, shall not degrade the VCI capabilities of its required prime movers by more than 10 percent (threshold) and zero percent (objective), which have a single-pass on fine-grained soil in accordance with ERDC/GSL SR-13-2 (see 4.3.8).

3.5.9 Road departure and recovery. The LEUT Type II with BHL with armor weighing at least 9852.03 kg (21720 lb) and an assumed CG height of 110.24 cm (43.4 inches) above the bed when towed by its prime movers, shall be capable of performing a full road departure recovery maneuver at a minimum of 40.2 kilometers per hour (kph) 25 miles per hour (mph) and a half road departure recovery at minimum of 48.3 kph (30 mph) in accordance with NATC/YTC SOP (see 4.3.9).

3.5.10 Vertical step. The vehicle trailer combination, tested at vehicle curb weight plus driver, with the trailer unloaded and at maximum load, shall negotiate a 30.5 cm (12 inch) (threshold) or 45.7 cm (18 inch) (desired) vertical step obstacle in forward and reverse directions (see 4.3.10).

3.5.11 Noise. The exterior noise of the trailer shall not be greater than 83 dB (A) at a maximum distance of 15 meters from the centerline of the vehicle path when measured in accordance with 4.3.11.

3.6 Operational modes summary (OMS) and mission profile (MP). The operational modes and mission profile are as defined in Table III and Table IV. No degradation is desired, however, degradation to prime mover speed shall not exceed 20 percent. All test distances shall be accomplished with the payload of the LEUT to its maximum required capacity of the towing vehicle payload, 90 percent of the time, and no load 10 percent of the time (see 4.4).

TABLE III. OMS/MP root mean squared (RMS) threshold.

Terrain (WNS)

(Gxx(n))

RMS1

mm (inch)

Average speed kph (mph)

Max safe speed up to kph (mph)

20 Primary hard surface 0.5 – 12.7 (0.02 – 0.5)

High quality (paved road) Gxx(n) = 1.4 x 10-8 (n)-2.5

0.5 – 3.8 (0.02 – 0.15)

88.5 (55)

104.5 (65)

Secondary pavement (two lane road) Gxx(n) = 1.9 x 10-7 (n)-2.5

2.5 – 6.3 (0.1 – 0.25)

72.4 (45)

80.5 (50)

Rough pavement (degraded paved road)

Gxx(n) = 8.0 x 10-7 (n)-2.5

3.8 – 12.7 (0.15 – 0.5)

64.4 (40)

72.4 (45)

50 Secondary road 7.6– 25.4 (0.3 – 1.0)

Loose surface with washboard and potholes

Gxx(n) = 4.0 x 10-6 (n)-2.4

7.6 – 17.8 (0.3 – 0.7)

40.2 (25)

72.4 (45)

Loose surface Gxx(n) = 3.0 x 10-5 (n)-2.0

12.7 – 17.8 (0.5 – 0.7)

40.2 (25)

56.3 (35)

Belgian block Gxx(n) = 4.0 x 10-6 (n) -2.5

10.2 – 25.4 (0.4 – 1.0)

32.2 (20)

40.2 (25)

Trails or cross-country

Gxx(n) = 4.6 x 10-4 (n) -1.9

Gxx(n) = 9.2 x 10-4 (n) -2.1

25.4 – 86.4 (1.0 – 3.4)

35.1 – 121.9 (1.5 – 4.8)

16.1 (10)

(5)

48.3 (30) 24.1 (15)

NOTES: 1. Maximum roughness is limited to 88.9 mm (3.5 inches) RMS.

TABLE IV. OMS/MP root mean squared (RMS) objective.

% Terrain Wave number spectrum (Gxx(n))

RMS1

mm (inch) Average Speed kph (mph)

Max safe speed up to kph (mph)

15 Hard surface 0.5 – 12.7 (0.02 – 0.5)

High quality (paved road)

Gxx(n) = 1.4 x 10-8 (n)-2.5 0.5 – 3.8 (0.02 – 0.15)

88.5 (55)

104.5 (65)

Secondary pavement (two lane road)

Gxx(n) = 1.9 x 10-7 (n)-2.5 2.5 – 6.3 (0.1 – 0.25)

72.4 (45)

80.5 (50)

Rough pavement (degraded paved road)

Gxx(n) = 8.0 x 10-7 (n)-2.5 3.8 – 12.7 (0.15 – 0.5)

64.4 (40)

72.4 (45)

25 Secondary road 7.6– 25.4 (0.3 – 1.0)

Loose Surface with Washboard and Potholes

Gxx(n) = 4.0 x 10-6 (n)-2.4 7.6 – 17.8 (0.3 – 0.7)

40.2 (25)

72.4 (45)

Loose Surface Gxx(n) = 3.0 x 10-5 (n)-2.0 12.7 – 17.8 (0.5 – 0.7)

40.2 (25)

56.3 (35)

Belgian Block Gxx(n) = 4.0 x 10-6 (n) -2.5 10.2 – 25.4 (0.4 – 1.0)

32.2 (20)

40.2 (25)

50 Trails Gxx(n) = 4.6 x 10-4 (n) -1.9 25.4 – 86.4 (1.0 – 3.4)

16.1 (10)

48.3 (30)

10 Cross-country Gxx(n) = 9.2 x 10-4 (n) -2.1 35.1 – 121.9 (1.5 – 4.8)

8.0 (5)

24.1 (15)

NOTES: 1. Maximum roughness is limited to 88.9 mm (3.5 inch) RMS.

3.6.1 Maintainability. The trailer shall be capable of achieving a maintenance ratio of 0.0015 maintenance man hours per operating mile (MMH/OM) (see 4.4.1).

3.6.2 Reliability. The trailer shall demonstrate durability at 0.60 probability of completing

9656 km (6000 miles) in accordance with the OMS/MP (see 3.6) and failure definition/scoring criteria (FD/SC) (see 4.4.2).

3.6.3 Environmental. The trailer and components shall be able to withstand and operate under the following extreme conditions of weather, terrain and roads specified herein and in AR 70-38.

The trailer shall be able to operate in hot and basic climatic regions, 49 to -32 °C (120 to -25 °F) (threshold) or 49 to -40 °C (120 to -40 °F) (objective). The trailer shall be capable of uncovered long term storage in hot (71 °C (160 °F)), basic and cold (-46 °C (-50 °F)) climatic areas to include stowage on pre-positioned afloat vessels up to 30 months without loss of mission essential functions with routine field maintenance performed every six months (see 4.4.3).

3.6.4 Speed. The trailer maximum speed shall be designed for not less than 104.6 kph (65 mph) (see 4.4.4).

3.6.5 Ride quality. The LEUT Type II tested unloaded and loaded with BHL with armor, weighing at least 9852.03 kg (21720 lb) and an assumed CG height of 110.24 cm (43.4 inches) above the bed shall be able to meet the required and desired speeds specified in Table V with little or no ill effect to the trailer or payload and not exceeding 6 Joules absorbed power in the vertical direction measured at the longitudinal/lateral CG at the trailer frame of the loaded trailer (see 4.4.5).

TABLE V. Ride quality speeds based on terrain roughness.

Metric

Weight Required

Kph (mph) Desired kph (mph)

Absorbed power

(J/s = W)

17.8 mm (0.7 inch) RMS (vertical axis) Unloaded/loaded 27.4 (17) 40.2 (25) ≤6

25.4 mm (1.0 inch) RMS (vertical axis) Unloaded/loaded 24.1 (15) 27.4 (17) ≤6

38.1 mm (1.5 inch) RMS (vertical axis) Unloaded/loaded 17.7 (11) 20.9 (13) ≤6

50.8 mm (2.0 inch) RMS (vertical axis) Unloaded/loaded 12.9 (8) 16.1 (10) ≤6

63.5 mm (2.5 inch) RMS (vertical axis) Unloaded/loaded 11.3 (7) 14.5 (9) ≤6 1x WNS Unloaded/loaded 24.1 (15) 32.2 (20) ≤6 1.5x WNS Unloaded/loaded 16.1 (10) 24.1 (15) ≤6 2x WNS Unloaded/loaded 8.0 (5) 16.1 (10) ≤6 3x WNS Unloaded/loaded 4.8 (3) 8.0 (5) ≤6

3.7 Fording. The LEUT Type II shall be able to ford in salt and fresh water until the water is equal to the height of the payload platform area for 15 minutes. There shall be no more than two percent by volume of water contamination of hub and wheel bearings and the LEUT Type II shall remain operable (see 4.5).

3.8 Materials. Material used in the manufacture of the trailer shall be new and meet the commercial quality standards as normally used for this type of equipment, considering strength, durability, ductility, and the purpose for which the equipment is to be used. Material certifications shall be maintained (see 4.6).

3.8.1 Hazardous material requirements. Hazardous material requirements shall apply to any components/parts purchased through a subcontractor or vendor, as well as manufactured parts (see 4.6.1).

3.8.1.1 Toxic chemicals, hazardous substances, and ozone-depleting chemicals. The use of toxic chemicals, hazardous substances, or ozone-depleting chemicals shall be avoided, if feasible. Asbestos, beryllium, class I and class II ozone depleting substances (ODS), hexavalent chromium, cadmium, mercury, radioactive materials, lead, and other group 1 agents classified as carcinogenic to humans by the International Agency for Research on Cancer (IARC) shall not be used except as noted below (see 4.6.1.1). The following exceptions are allowed without prior approval from the Government:

a. Cadmium and hexavalent chromium on electrical connectors and back shells used to mate with cadmium electrical connectors on Government furnished equipment (GFE).

b. Cadmium and hexavalent chromium on electrical connectors used in automatic fire extinguishing systems (AFES).

c. Chemical agent resistant coating (CARC) primers and topcoats.

d. Lead-acid batteries.

e. Solder.

f. Leaded battery terminal adaptors or clamps.

g. Steel containing up to 0.35 percent lead by weight.

h. Aluminum containing up to 0.4 percent lead by weight.

i. Copper and brass alloys containing up to 4 percent lead by weight.

j. Beryllium and beryllium alloys used in electrical components.

k. Mercury containing components compliant with European Union (EU) Directive

2011/65/EU.

l. Trace amounts of identified restricted materials contained in base materials or alloys.

For the purposes of this purchase description, trace amounts are defined as less than 0.1 percent by weight for carcinogens and less than 1 percent by weight for all other materials.

3.8.2 Dissimilar metals. All dissimilar metals, as defined in MIL-STD-889, used throughout the trailer shall be insulated (example: by use of primer and paint) from one another to prevent galvanic corrosion, and shall be identified by the contractor (see 4.6.2).

3.8.3 Ozone resistance. All rubber components shall be ozone resistant to the degree specified in accordance with ASTM D1171 using ozone chamber exposure Method A (see 4.6.3).

3.9 Dimension requirements. For verification of the following, see 4.7.

a. The payload platform area shall be sufficient to accommodate all the possible payloads listed in Table I along with the associated chains and binders required to tie down the equipment. The payload platform area plus any usable tail area shall contain the full length of all equipment and shall be greater than 7.37 meters (737 cm or 290 inches) horizontally.

b. The overall width of the trailer shall not exceed 243.8 cm (96 inches).

c. The height of the loaded (12 ton) payload platform area shall not exceed 127 cm (50 inches) and shall not exceed 132 cm (52 inches) unloaded.

d. The trailer curb weight shall not exceed 5669.9 kg (12500 pounds).

e. The trailer angle of approach shall be 15 degrees or more and the angle of departure shall be 15 degrees or more, as defined in SAE J1100.

f. The loaded (12 ton) trailer shall have a minimum ground clearance of 30.48 cm (12 inch) (threshold) or 45.72 cm (18 inch) (desired).

g. The rear load ramp angle shall be 15 degrees or less to accommodate ease of loading and unloading the platform.

3.10 Frame. The frame shall be in accordance with 49 CFR 393.201 (see 4.8). The primary frame members shall be adequately braced with a sufficient number of cross members to prevent permanent deformation. Weight reduction techniques may be used (example: holes in web of main beams) as long as performance requirements are maintained. The frame shall show no permanent deformation after torsional loads from operations in accordance with the OMS/MP (see 3.6).

3.11 Axle, wheel ends, and suspension. The suspension shall have at least two axles (see

4.9).

3.11.1 Wheel ends. The trailer shall have preset wheel ends, utilize pre-adjusted bearings, and utilize extended life wheel seals. The trailer shall have a single wheel-axle end mounting nut on each axle end (see 4.9.1).

3.11.2 Suspension system. The suspension system shall be in accordance with 49 CFR

393.207. Each component of the suspension system shall have a rated capacity at least equal to the load imposed by loading conditions 12 tons (threshold) or 15 tons (desired) over the mission profile. Clearances shall prevent interference between the tires and any other parts of the trailer under the operating conditions specified herein. The loading on any axle shall not exceed its rated capacity. Suspension articulation shall be adequate so as not to cause any damage to the trailer, suspension, or prime mover during ingress from a horizontal plane onto a 15 degree ramp and during egress from the 15 degree ramp onto a horizontal plane. Jounce bumpers shall keep the axles from hitting the frame (if applicable) (see 4.9.2).

3.12 Lubrication. All lubrication shall be in accordance with MIL-PRF-10924. All moving parts normally requiring lubrication shall be provided with easily accessible pressure grease fittings. Pressure type lubrication fittings shall be easily accessible and unobstructed for servicing and shall conform to SAE J534. Pressure relief fittings shall be used where high pressure lubricating equipment could cause damage to seals (see 4.10).

3.12.1 Lubrication chart. A lubrication chart shall be provided for inclusion in the technical manual and also permanently attached to the trailer in a readily visible location. The chart shall direct attention to all lubrication fittings and specify the range and grade of lubricants required for critical temperatures. The chart shall be inscribed on a plate conforming to MIL-DTL-15024, Type A, B or C (see 4.10.1).

3.13 Wheel and tire assembly. Tires and wheels shall conform to 49 CFR 571.119 and 49

CFR 571.120. All tire and wheel ratings and dimensions shall conform to the European Tyre and Rim Technical Organisation (ETRTO) Standards Manual at the maximum speed of the prime mover vehicle. Tire and wheel rated capacity shall be at least 15 percent greater than the maximum load imposed on each tire, measured at each wheel, at the ground, with the trailer system loaded with the maximum specified payload. Wheel and tire assemblies shall be balanced. Design should facilitate inflation, deflation, and pressure gauging with standard tools or with central tire inflation system (if applicable). Wheel and tire assemblies currently in the Army system shall be assessed for form, fit, function, and ruled suitable or rejected for use. Tire and wheel assemblies shall be repairable and replaceable at field level maintenance. Tools from the BII shall be utilized to perform this function. However, if special tools must be utilized, a search for suitable existing tools in the Federal supply system or a commercial off the shelf item (COTS) shall be accomplished. If a suitable tool is found in the Federal supply system or a COTS item, the most cost effective tool shall be utilized. If a suitable tool is not found, the manufacturer shall identify what is needed and get prior approval from the Government (see 4.11).

3.13.1 Tires. Tires shall be of steel belted radial tubeless type design, demonstrate good lateral stability for operation on wet highways and have an all-terrain tread for good off-road mobility in mud, snow, and sand. Tire size, manufacturer, design and ply rating shall be the same for all tires on each trailer. Tires shall have a minimum tread life of 16100 kilometers (10000 miles) in accordance with the Tire Treadlife Durability section of SAE J2014 for the mission profile of the trailer system. Tires furnished shall be new with tire age not more than 24 months from date of manufacture and have a storage life of 6 years. Tire air pressure shall be stenciled on both sides of the trailer (see 4.11.1).

3.13.1.1 Runflats. The trailer shall be equipped with runflats inside all tire and wheel assemblies including spare. The trailer shall be able to maintain full mobility for no less than

48.3 km (30 miles) after complete loss of air pressure in any or all tires on same side for both a fully loaded and unloaded trailer over operational mode/mission profile terrain at the following distances and speeds: (primary: 9.7 km (6 miles) at 48.3 kph (30 mph), secondary: 24.1 km (15 miles) at 33.8 kph (21 mph), trails/cross country: 14.5 km (9 miles) at 14.5 kph (9 mph)). The runflat shall not damage the tire over operational mode/mission profile terrain and when trailer is run over a 20.32 cm (8 inch) curb (see 4.11.1.1).

3.13.2 Tire changing tools. The axle jack, axle jack low ground pressure plate, lug nut wrench, and two-piece breaker bar shall be furnished as part of the basic issue items (BII) in accordance with 3.26.1 (see 4.11.2).

3.13.3 Wheels. Tubeless, hub piloted, bolt-together type wheels shall be furnished. Wheel load and pressure rating shall be equal or greater than the tire capacity. Wheel size shall be the same for all wheels on each trailer. Wheels shall meet requirements of the Dynamic Cornering Fatigue (bolt-together type) and Dynamic Radial Fatigue test sections of SAE J1992 at the trailer’s maximum load rating. If dual wheels are used, the inner and outer wheels shall be mounted with wide flanged wheel lug nuts, one per stud. Torque wheel lug nuts with use of a torque wrench in proper commercial sequence. Wheel mounting nuts shall be corrosion resistant using applicable corrosion protective coating for fasteners (see 3.23). Wheel and rim finish shall be in accordance with MIL-DTL-53072, TT-C-490 Type I pretreatment, MIL-DTL-53084 primer, and MIL-DTL-53039, MIL-DTL-64159, or MIL-PRF-32348 Type III Topcoat. Topcoat wheel color shall be in accordance with SAE AMS-STD-595 color identification number 37030.

Do not apply CARC topcoat paint to wheel studs or bead seat of rim or portions enclosed by tire or nut seat area or 25.4 mm (1 inch) area surrounding valve hole. If configured in single wheel application, do not apply CARC topcoat paint to wheel mating surface to hub. The total paint coating system thickness shall not exceed 3.5 mils in the wheel mating surface to hub (and opposite side) (see 4.11.3).

3.13.4 Valves. Tire valves shall be in accordance with A-A-52611, shall be readily accessible for manual inflation, and shall be provided with sealing valve cap. If configured in a dual application, tire and wheel assemblies shall be equipped with valve extensions. The valve extensions shall not extend beyond the outside edge of the rim and be so mounted as to permit checking tire pressure and inflation using only on-trailer equipment (see 4.11.4).

3.13.5 Spare wheel and tire assembly. The trailer shall provide an inflated spare tire and wheel assembly matching the other wheels and tires used on the trailer. The spare tire and wheel assembly shall be mounted onto the trailer and be serviced using only the trailer BII. The spare wheel and tire assembly shall be balanced (see 4.11.5).

3.13.6 Spare tire carrier. The spare wheel and tire assembly shall be removable and stowable by not more than two operators (see 3.31). A tire carrier shall provide secure stowage for the spare wheel and tire assembly, and be located in such a way as to not obstruct the loading or unloading of vehicular equipment or bulk cargo onto the trailer. No part of the spare tire carrier or spare tire and wheel assembly shall require removal from the trailer for loading or unloading equipment or cargo (see 4.11.6).

3.13.7 Brakes. The service brakes shall operate through commercially viable technology. A multi-channel ABS shall be installed on the trailer and shall meet the requirements for brake performance specified within 49 CFR 571.121 for maximum payload. The brake system shall conform to 49 CFR 393 Subpart C and 49 CFR 571.121. The trailer ABS shall have full functionality in 12 and 24V blackout operation. If an air brake system is utilized, the air system or air tank moisture drain provision(s) shall be easily accessible for the user and not require crawling under the trailer to access. If an air brake system is utilized and the trailer is equipped with a central tire inflation system (CTIS) then the air brake system shall include inline air dryer(s) to assist in removing moisture from the compressed air system (see 4.11.7).

3.13.8 Service brake performance. The service brakes in a prime mover-trailer combination, with rated payload, shall meet the stopping distance requirements of 49 CFR 393.52, 49 CFR

571.121 and TOP 2-2-608 (see 4.11.8).

3.13.9 Glad hands. If the trailer is equipped with glad hands, the glad hands shall be of the self-sealing type and conform to SAE J318. Glad hand location shall comply with SAE J702.

The trailer shall be equipped with imitation glad hands affixed to the drawbar area. The imitation glad hands shall provide an adequate seal in order to keep foreign debris and contaminants out of the glad hand hose ends during periods of non-use (see 4.11.9).

3.13.10 Parking brakes. The parking brakes shall be in accordance with 49 CFR 393.41 and

49 CFR 571.121. The spring parking brakes shall be on each axle and shall automatically apply upon disconnection of the emergency air lines as applicable. Under emergency conditions such as loss of air to the service brake system, the parking brake system shall permit braking functions via the emergency air supply. The parking brakes shall hold the fully loaded trailer on a 30 percent longitudinal grade facing both uphill and downhill. The parking brake shall have a manual release in the event of a brake system failure. As applicable, "caging" of air brake chambers is acceptable to meet this requirement (see 4.11.10).

3.13.11 Anti-lock brake system (ABS). The ABS shall operate on both 12 and 24V. Use of a voltage converter box to meet the 24V operation requirement is acceptable. ABS, with each axle end sensed and controlled independently, is required on all axles and shall meet current industry and 49 CFR 571.121 requirements and provide power line carrier (PLC) communication of ABS malfunction to the prime mover cab. The PLC architecture shall be compliant with SAE J2497.

A diagnostic warning blink light shall be mounted on the left side of the trailer. The diagnostic warning blink light shall provide diagnostics capability at minimum to include fault isolation capability sufficient to identify critical failures without use of an off board device. The diagnostic warning blink light shall be viewable only when performing diagnostic test on the ABS brake system. The ABS shall be water proof to road splash/spray and fording with easy access for maintenance (see 4.11.11).

3.14 Lighting. Trailer lighting, including reflectors, shall be in accordance with 49 CFR

571.108 and MIL-STD-1179. All running lights and reflectors with the exception of the rear side marker lights shall be mounted in recessed or otherwise guarded locations, for protection. The electrical end connections shall be greased to current commercial standards. The brake lights shall override the four-way emergency flashers or the two systems shall be independent of each other. Turn signal lamps shall conform to SAE J588. All electrical wiring shall conform to SAE J1292. The rear identification lights are to be located in a protected location (see 4.12).

3.14.1 Service lighting requirements. All trailer service lights shall be of the light emitting diode (LED) type fully meeting MIL-STD-1179, 49 CFR 571.108, and SAE J1889 requirements and shall operate on both 12 and 24V DC. License plate light and related harness shall not be furnished. Midship turn signals shall not be furnished. Commercial reflectors (painted before assembly) shall be used (see 4.12.1).

3.14.2 Blackout lighting system. A 24V LED trailer blackout lighting system for tail light and stop light shall be provided in accordance with MIL-PRF-32212. The energy emission of any trailer light source to be illuminated in blackout mode shall be limited to the visible spectrum of 380 to 700 nanometers (nm), with the following exception: energy may be radiated in the 700 to 1200 nm band range provided it is less than 1 percent of the energy radiated in the 380 to 700 nm band. The 24V lamp assembly is to include one yellow, solid state lamp in the center and a pair of red, solid state lamps on each side of the center lamp. The four red lamps will appear as individual lights up to 18.29 m (60 feet), from 18.29 to 36.58 m (60 to 120 feet) the four red lights will converge into two points of light. Lights will be visible at 304.8 ±60.96 m (1000 ±200 feet). When trailer is on a 20 percent downgrade no light is to be visible from an altitude which exceeds 122.92 m (400 feet). During blackout lighting operation the service lighting and the ABS diagnostic light shall be non-functional (see 4.12.2).

3.14.3 Electrical harness requirements. All electrical harness connections are to be water tight, environmentally sealed, positive retention type to protect it from rain, and road spray.

Wiring shall be secured to prevent chaffing and loose connections (see 4.12.3).

3.14.4 Electrical connector. The trailer shall be equipped with a hardwired 12-contact connector conforming to STANAG 4007. The electrical connector shall be located in accordance with SAE J702 (see 4.12.4).

3.15 Flooring. The open areas of the trailer deck shall have full length, non-metallic planks.

If wood is used, a pressure treated hardwood or equivalent shall be used to protect against insects, fungal decay, and deterioration. Planks shall be individually replaceable. Flooring shall support the point loading of the BHL with armor weighing at least 9852.03 kg (21720 lb) (see 4.13).

3.16 Attachment of flooring. Flooring shall be secured with corrosion-resistant fasteners (see

3.30.1). All boards shall be secured by not less than two screws installed at each cross sill/member. The top of each screw shall be countersunk below the top of the deck surface so as not to be a hazard. The ends of each full length floor board shall be supported by frame structure (see 4.14).

3.17 Lunette. The Type II LEUT shall be equipped with a lunette design towing mount (see

4.15).

3.17.1 Lunette heights. The Type II LEUT shall have an adjustable lunette capable of connecting within a range of Army prime mover pintle heights (see 6.1). The pintle heights include 69.22, 92.71, and 85.09 cm (27.25, 36.5, and 33.5 inches) (with 85.09 cm (33.5 inches) being the most common height). The height is measured from the ground to the bottom of the lunette ring.

3.17.2 Lunette load rating. The lunette shall have a vertical load rating of at least 15 percent of the LEUT Type II trailer at gross vehicle weight with the BHL with armor.

3.18 Duel front landing legs. The trailer shall have mechanically operated multi-gear, multi-speed dual landing legs facilitating rapid operation requiring minimal operator effort while raising or lowering the trailer whether loaded or unloaded (see 3.4.1 and 3.31). The landing legs shall be located near the front of the payload platform area. Once a load is applied, the dual front landing legs shall operate simultaneously with only one handle. The landing legs shall include a landing pad large enough to support a trailer at GVW in a sand environment so the landing legs don’t sink into the sand sufficiently to prevent attachment of the trailer to the prime mover. The landing legs shall be retractable so there is no interference with ramps or hills (see 4.16).

3.19 Rear stabilizer legs. The trailer shall have two extendable, pivot mounted rear stabilizer legs capable of stabilizing a fully loaded trailer while disconnected from the prime mover so the trailer or payload will not shift position while disconnected from the prime mover. The rear stabilizer legs shall pivot so there is no interference with ramps or hills and fully secure during vehicle operations to prevent damage (see 4.17).

3.20 Tail. If a fixed downward slanting tail is necessary to facilitate loading or unloading of equipment such as the Type II SSL or BHL, then the tail shall be a self-cleaning tail (see 4.18).

3.21 Rear loading ramps. Two self-cleaning loading ramps, complete with hooks and handles (if needed), shall be capable of withstanding the applied portion of the each payload listed in Table I without permanent deformation. The ramps shall be adjustable to accommodate the loading and off-loading of the equipment in Table I. The ramps shall be spring assisted and attached to the trailer on hinges allowing the ramps to be swung up for storage and travel. The rear loading ramps shall remain in the stowed position during travel. Adjustment of width as well as stowed and deployed actions shall be possible by not more than two operators (see 3.4.1, 3.31 and 4.19).

3.22 Paint. The trailer shall be cleaned, pretreated (or zinc-rich primed), CARC primed &

CARC top-coated IAW MIL-DTL-53072. All components of the trailer shall be finished or painted to provide a low reflectance surface. All hardware not normally painted shall be treated to provide low reflectivity. The trailer, including undercarriage assemblies such as the axles and suspension, shall be painted in accordance with SAE AMS-STD-595 color identification numbers 33446, 34094, or 37030 as specified in the contract or delivery order. Do not CARC (topcoat) the tires, wheel studs, bead seat of wheel rim, or portions enclosed by tire or nut seat area or rim mating surface to hub. CARC shall not be applied to the planking surfaces (see 4.20).

3.23 Corrosion control and performance. The trailer, sub system or component shall operate for a minimum 20 year useful service life in accordance with AR 750-1 and AR 750-59. This shall include varying or extended periods in corrosive environments involving one or more of the following: high humidity, salt spray, road de-icing agents, ground contact, gravel impingement, fording, atmospheric contamination, hot and cold operational climates in accordance with 3.6.3, and storage temperature extremes, -46 to 71 °C ( -50 to 160 °F). All internal structure, tubing, channels, cavities and compartments shall be coated with rustproofing compound A-A-59295 Type I. Only normal washing, scheduled maintenance (including paint touch up) and repair of accidentally damaged areas (not a result of intended use, deficiency in design, materials, manufacturing or normal wear), shall be necessary to keep the corrosion or degradation prevention in effect (see 4.21).

3.23.1 Surface corrosion.

a. During the specified service life, surface corrosion shall meet or exceed corrosion Grade 8 in accordance with ASTM D610 on any steel surface (approximately stage one in the U.S. Army corrosion rating system on any nonferrous surface).

b. During the specified service life, surface corrosion shall exhibit no loss of original base metal thickness greater than 2 percent or 25.4 microns (0.001 inch), whichever is less.

c. During the specified service life, surface corrosion shall exhibit no adverse effect on form, fit or function of any component due to corrosion or degradation, throughout the in-service life.

d. Directed military specific parts shall be exempt from these requirements. All other exceptions to these requirements shall be listed with a brief rationale and submitted to the Government for approval prior to any evaluation, contract award or start of work.

e. Stages of corrosion shall be determined by visual examination and the use of probes, spring loaded punches, or similar devices to determine metal soundness. As an aid in evaluating corrosion damage and planning corrosion repair actions, corrosion has been classified into four stages:

(1) Stage 1 - Red, black or white corrosion products on surfaces accompanied by minor etching and pitting. Base metal is sound.

(2) Stage 2 - Powdered, granular or scaled condition resulting in erosion of material from surface. Base metal is sound.

(3) Stage 3 - Surface condition and corrosion deposits are similar to stage 2 except the metal in corroded areas is unsound and small pinholes may be present.

(4) Stage 4 - Corrosion has developed or advanced to a point where the surface has been penetrated. No metal remains at point of severest corrosion. There are rust holes in the surface area or metal is completely missing along the edge.

3.24 Marking and data plates.

3.24.1 Marking. The exterior markings shall be placed and sized in accordance with MIL- STD-642. Markings, letters and numbers on the trailer shall be lusterless paint conforming to MIL-DTL-64159.