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

(h) Supports on a pogo stick type hose tender with SAE J318 dummy gladhand connectors to retain hoses when not in use (truck tractors only).

(i) SAE J318 dummy gladhand couplers with security chains on cables (not required for

truck tractors, unless a trailer towing package is specified).

(j) Prime mover only parking brake valve to permit prime mover parking brakes to be

applied while charging the trailer air brake system.

(k) Identification of emergency and service lines in accordance with 3.10.5.

3.5.22 Pusher axle off line. On model 8x4 and 8x6 vehicles, the second axle from the front shall be of the pusher type. The pusher axle shall be ahead of the rear bogie and shall be of the non-driving type. The axle shall have a suspension system, wheels, tires and air brakes conforming to the requirements specified herein.

3.5.22.1 Pusher axle loads and rating. When the pusher axle is on the ground and the vehicle is loaded to specified GVW, the axle loads on the last 3 axles shall be as equal as practicable. The pusher axle shall have a GAWR of not less than 9070 mm (20,000 pounds).

3.5.22.2 Pusher axle air control. The pusher axle shall be capable of being lifted off the ground not less than 150 mm (6 inches) by the operation of an air control selector switch accessible to the seated driver. The switch shall be identified in accordance with 3.10.5. An air regulator control valve (with air pressure gage and loading chart in accordance with see 3.10.5) shall be provided in the cab, accessible to the seated driver. The control shall provide for adjustment of the pusher axle air suspension pressure for varying the load distribution in the various axles.

3.5.23 Front wheel drive conversion, off line. Except for TVES, the chassis manufacturer's standard rear wheel drive only vehicle may be modified to add front wheel drive. Modifications shall be as follows:

(a) The conversion axle manufacturer's engineering department shall specifically approve and certify that all such modifications meet the design requirements and standards of the conversion axle manufacturer. Certification shall be based on both design analysis and proving ground test reports which shall be made available to the engineering and quality assurance offices of the procuring activity.

(b) The chassis manufacturer's production line installed front axle shall have the same

load rating as the conversion axle to be installed.