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Sliding fifth wheel base air release |
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|  MIL-T-62735
The SAE J560 connector shall include a grip for withdrawing from a matching semitrailer
receptacle.
3.4.2.10 Hose tender. The truck tractor shall have a pogo-stick type hose tender. The
pogo stick shall be capable of securing and controlling the semitrailer lighting cable(s) and air
brake hoses.
3.4.2.11 Truck tractor wind deflator. When specified (see 6.2), for standard cabs only a
wind deflector shall be installed or shall be furnished with the vehicle for subsequent installation
on the cab roof by the receiving activity. The deflector shall be of molded fiberglass reinforced
plastic and shall be not less than 1600 mm (63 inches) wide. Unless otherwise specified
(see 6.2), the deflector shall be of a height suitable for use with the cab furnished in combination
with a semitrailer van having a level height of 3810 mm (12 feet 6 inches) at an upper fifth wheel
height of 1220 mm (48 inches). The deflector, including all mounting and supporting hardware,
support ribs and installation instructions, shall be securely stowed on the vehicle for shipment.
3.4.2.12 Sliding fifth wheel base air release). When specified (see 6.2), the fifth wheel
shall have an adjustable sliding base. The slide locks shall be of the air release type with
controls mounted in the cab, accessible to the seated driver. Controls shall have identification in
accordance with 3.10.5. The fifth wheel shall have a longitudinal adjustment range of not less
than 580 mm (23 inches), with adjustment increments of not more than 100 mm (4 inches). The
truck tractor shall conform to 3.4.2 through 3.4.2.11 and all options therein specified in
acquisition documents. All fifth wheel location requirements specified in 3.4.2.4 through
3.4.2.4.3 shall be met with the sliding fifth wheel in its forwardmost position of adjustment.
3.4.2.12.1 Sliding fifth wheel location. With the sliding fifth wheel in its forwardmost
position of adjustment, the centerline of the kingpin shall be not less than 380 mm (15 inches)
forward of the rear axle (4x2 and 4x4) or the centerline of the bogie (6x4 or 6x6). Sliding
positions to the rear of the rear axle (4x2 and 4x4) or to the rear of the trunnion between rear
axles (6x4, 6x6, Bx4 and 8x6) may be blocked off.
3.4.2.13 Interchangeable top plate assemblies. When specified for model 50 and larger
(see 6.2), the fifth wheel shall have two bolted on, inter- changeable top plate and kingpin jaw
assemblies. One assembly shall be for an SAE J700 kingpin and the other for an SAE J848
kingpin. The truck tractor shall have provisions for stowing the plate and jaw assembly not in
use. The replaceable assemblies shall be capable of being interchanged as a unit by one man,
using a hoist, in not more than 15 minutes. The fifth wheel shall conform to 3.4.2 through
3.4.2.13 and all options therein specified in acquisition documents.
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