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

3.5.18.4  Pintle height.  When specified (see 6.2), the pintle height, measured to the centerline of the pintle, shall be 510 mm, plus 125 minus 0 (20 inches, plus 5 minus 0).  The installation shall have reinforcements to transfer pintle loads directly to the chassis frame rails. The installation shall withstand a towed load equal to the GVW of the truck or 18 150 kg (40,000 pounds) (whichever is less) without permanent deformation.

3.5.19  Trailer lighting cable.  When specified (see 6.2), a trailer lighting cable conforming to SAE J1067 shall be furnished.  The cable shall be pre-coiled and shall be not less than 2800 mm (110 inches) long when fully extended.  Both ends of the cable shall have a round plug conforming to SAE J560.  The plugs shall have a grip for withdrawing from the connector sockets.  The cable shall be stowed in the vehicle for shipment.

3.5.20  Electric trailer brake controller.  When specified (see 6.2), the vehicle shall have an electric trailer brake controller, with control in the cab, accessible to the seated driver.  Wiring shall be through the SAE J560 lighting receptacle.  The controller shall include load control, a hand lever and all necessary accessories.  The control shall be identified in accordance

with 3.10.5.

3.5.21  Trailer brake control system.  A trailer brake control system shall be furnished on truck tractors and when required as a part of the trailer towing package (see 3.5.18).  The trailer brake control system shall include:

(a)   Coincident control of trailer brakes with prime mover foot control

(b)   Independent hand control for trailer brakes

(c)   Prime mover protection valve with cab instrument panel control accessible to the

seated driver and an automatic breakaway feature

(d)   Trailer stoplight control operable with the foot brake and with a hand control for

trailer brakes

(e)   Two SAE J844 pre-coiled air hoses, not less than 2800 mm (110inches) long, with

SAE J318 gladhand couplers on both ends of the hoses (not required for truck tractors, unless a trailer towing package is specified).  The hoses shall be stowed in the vehicle for shipment

(f)    Air connectors for trailer with SAE J318 gladhand couplers mounted at the rear of

the vehicle, located to prevent interference with a coupled trailer (not required for truck tractors, unless a trailer towing package is specified).  Air connectors and gladhands on dump trucks shall be located to prevent damage during dumping of the truck cargo

(g)   Two SAE J844 pre-coiled connecting air hoses, not lese than 2800 mm (110 inches) in length (but see 3.4.2.16 and 3.4.2.18), equipped with coiled spring hose guards, and SAE J318 gladhand quick connector on the trailer end of the hoses

(truck tractors only).

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