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(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.
(c) Components used in the front wheel drive conversion shall be of current production.
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