MIL-T-6211OG
3.4.11.2 Trailer brake control system. When specified (see 6.2), a trailer brake control system shall be furnished in addition to the components specified in 3.4.11.1 and 3.4.11.1.1. The trailer brake control system shall include:
(a) Identification of emergency and service lines
(b) Coincident control of trailer brakes with the prime mover foot control
(c) Independent hand control for the trailer brakes
(d) Prime mover protection valve with a dash control and automatic break-away feature
(e) Trailer stoplight control operable with a foot brake and with hand control for the
trailer brakes
(f) Air connectors for trailers with SAE J318 gladhand couplers mounted at the rear of
the vehicle, located to prevent interference with trailer
(g) Two SAE J844 coiled air hoses, each not less than 11O inches long when fully
extended, with SAE J318 gladhand couplers on both ends of hoses. The hoses shall be packaged and stowed in the vehicle tool compartment for shipment
(h) Dummy gladhand couplers with chains
(i) Prime mover only parking brake valve to permit prime mover parking brakes to be
applied while charging the trailer air brake system.
3.4.11.3 Brake controls for use from a towing vehicle. When specified (see 6.2), the vehicle shall be furnished with a system for controlling the brakes from a towing vehicle (wrecker). The installation shall be complete with air brake couplers, a relay emergency valve with no-bleed-back feature (except when a spring applied emergency brake is furnished), additional air lines and fittings. The service and emergency couplers shall be mounted on the front in a protected position providing for ready attachment of air hoses from a towing vehicle. The service and emergency couplers shall be identified and provided with dummy gladhand couplers with chains. The system shall not compromise conformance to any Federal Motor Carrier Safety Regulation referenced herein or to any Federal Motor Vehicle Safety Standard.
* 3.4.12 Cab. Unless otherwise specified, the chassis manufacturer shall furnish any type of his standard or optional full width cab. When specified (see 6.2), a cab with a forward tilting hood and fender assembly, including tilting and locking mechanism, shall be furnished. When specified (see 6.2), type II and type III vehicles shall be furnished with a tilt type cab having a tilting and locking mechanism. Tilt cab features shall be in accordance with the Employee Safety and Health Standards of Federal Motor Carrier Safety Regulation 399, including the first step height, which shall be not more than 24 inches. The cab doors shall be equipped with locks operable from inside the cab through mechanical linkage and with at least the curbside door equipped with an external, key operated lock. Drip rails shall be installed above the cab doors. Safety grips shall be provided on each side of the cab for assisting personnel in entering and
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