MIL-T-62735 Trucks And Truck Tractors: Modified Commercial, General Specification ForThis specification covers general requirements for the classes, models and types of modified commercial trucks indicated in the specification title above and in 1.2 below. This specification is intended only as a document to be referenced in detail specification sheets that must, as a minimum, cover detailed truck body requirements and specify the model and class required from table I.

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MIL-T-62735

3.5.18 Trailer towing package. When specified (see 6.2), except for stake dump trucks, the vehicle shall have a trailer towing package. The trailer towing package shall consist of a pintle, safety chain attachment devices, a lighting receptacle and associated reinforcements and wiring, and shall be installed on the rear of the vehicle. Vehicles of 10 900 kg (24,000 pounds) GVW and over that are equipped with a trailer towing package shall have a trailer brake control system conforming to 3.5.21.

3.5.18.1 Pintle. The pintle shall be of the rotating type conforming to table XVIII. The pintle shall have reinforcements to transfer directly to the chassis frame rails a vertical tongue load and a horizontal drawbar load not less than that specified in table XVIII. Except for truck tractors, the rearmost portion of the pintle shall be forward, but no more than 100 mm

(four inches) forward, of the rearmost part of the vehicle. See 3.5.1.

TABLE XVIII. Pintle.

Vehicle class

Pintle design

Vertical tongue load

kg (pounds)

Horizontal tongue load

kg (pounds)

Up to 18

19 to 40

41 and up

MS 51335-1

MS 51118-1

815 (1,800)

1815 (4,000)

8150 (18,000)

18 150 (40,000)

3.5.18.2 Safety chain attachment devices. There shall be two trailer safety chain attachment devices, one adjacent to each side of the pintle. Each attachment device shall provide an ultimate strength at least equal to that specified in table XIX. The attachment devices shall be capable of accommodating a standard grab hook conforming to table XIX. See 3.5.1.

TABLE XIX. Pintle safety chain attachments.

Vehicle

class

Attachment device

ultimate strength kg (pounds)

Grab hook mm (inches)

Size

Width

Thickness

Throat

Up to 24

24 and up

Equal to GVW

19 900 (24,000)

9.5 (3/8)

16 (5/8)

56 (2-3/16)

115 (4-9/16)

18.7 (47/64)

30 (1-3/16)

12.3 (31/64)

19.8 (25/32)

3.5.18.3 Lighting receptacles. The lighting receptacle, conforming to SAE J580 with its conductors connected and color-coded as specified therein, or number coded, shall be in a readily accessible location near the pintle. Dump truck lighting receptacle location shall be such as to prevent damage during dumping of the truck cargo.