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|  MIL-T-62735
3.4.2.16.1 Rear winch(es). The winch assemblies shall be mounted on the chassis frame
behind the cab. A PTO of the main transmission (or auxiliary transmissions, when furnished)
shall drive the winches or winch hydraulic system. All winch controls shall be in the cab,
accessible to the seated driver. Controls shall be marked in accordance with 3.10.5. Winch
controls shall provide no interference with the entrance or exit of the driver. All exposed
moving, reciprocating and rotating power transmission devices shall be guarded.
3.4.2.16.2 Winch details. Winches shall have an integral, adjustable, automatic safety
brake. Each non-hydraulic winch shall have two forward speeds, a neutral position, and a
reverse speed. Hydraulic winches shall have two infinitely variable forward speed ranges, a
reverse speed range and a neutral position. Each winch shall have a single line pull capacity on
the bare drum in accordance with table XVI. The winch(es) shall conform to SAE J706.
3.4.2.16.3 Winch wire core. Each winch shall be wound with not less than 46 m
(50 feet) of improved plow steel, independent wire rope core (IWRC), regular lay wire rope,
equipped with a full capacity clevis hitch and hook eye. Winch wire rope size shall conform to
table XVI. Other vehicle and winch characteristics shall be in accordance with table XVI.
3.4.2.16.4 Rear-mounted accessories. Truck tractor equipment, complete with mounted
accessories, shall include:
(a) Rear tail roller, 200 mm (8-inch) minimum diameter, with bearings and grease
fittings. The installation of the winch drum(s) and tail roller shall provide a
clearance of not less than 50 mm (2 inches) between the winch cable and the top of
the fifth wheel with the cable extended down over the tail roller as in lifting
operations;
(b) A cab protector sufficient to protect the back and roof of the cab from a winch cable
whip-backlash accident;
(c) Approach ramps designed for lifting folding gooseneck semitrailers onto the fifth
wheel with the winch, in addition to the requirements of 3.4.2.7;
(d) Fifth wheel tilt limit devices to assure the fifth wheel will be slightly higher than the
top of the approach ramps during loading, unloading, coupling and uncoupling
operations.
3.4.2.16.5 Hydraulic winches. Hydraulic winches shall be hydraulically driven without
the use of chains or other non-hydraulic, non-gear driven mechanical devices. The winches shall
have two speed ranges and shall use either a worm or planetary gear reduction system. The low
range low speed shall be not less than 3960 mm (13 feet) per minute at full load on the first layer
of the winch drum. The no load speeds in high range shall be at least twice as fast as those in the
low speed range. Dual winches shall be mounted to enable both winches to be used
simultaneously to load and unload a coupled semitrailer. Each hydraulic winch shall have a
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