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|  MIL-T-62110G
3.5.8.1 Receptacles. Three pairs of 115-volt and 230-volt receptacles shall be provided,
one pair at the curbside front, one pair at the streetside front, and one pair at the rear of the
vehicle. The receptacles shall be recessed within the body and provided with a weatherproof
spring loaded cover.
3.6 Turret and derrick. Turret and derrick structural components shall have a calculated
design stress, such that the yield point of the materials used is not exceeded by the induced
stress due to the weight of the components plus the stress due to three times the loads specified
in 3.3.4. For plastic components, the yield point shall not be exceeded with 6 times the load
specified in 3.7.3 in the baskets. The materials used shall meet all applicable performance
requirements specified herein.
3.6.1 Hydraulic turret. The vehicle shall be furnished with a hydraulic motor driven
turret. The turret shall have a rotating rated torque capacity of not less than 37,000 pound-feet
with a safety factor of 3 for Size 70 vehicles and 21,000 pound-feet with a safety factor of 3 for
size 55 vehicles. The hydraulic relief valve(s) shall be set to meet the rated loads specified and
to provide the minimum specified torque requirements. All journals, bearings, and drive
components shall be oil lubricated. A means shall be provided to rotate the turret in the event of
hydraulic failure.
*
3.6.2 Derrick assembly. The derrick assembly shall be of the telescopic type,
hydraulically extended and retracted by a hydraulic cylinder. The derrick assembly elevation
from stowage position to maximum elevation shall be by means of a hydraulic cylinder. The
derrick assembly shall be attached to the rotating turret utilizing self-alining bearing(s) and shaft.
Under dynamic conditions, the derrick shall support the specified load placed on the upper head
sheave in all extended positions without permanent deformation of any components in or along
the derrick or supporting structure. The derrick assembly shall be capable of extending and
retracting in all selected positions. The derrick shall be equipped with a head sheave and travel
rack. The derrick shall be capable of setting poles up to 55 feet for size 55 vehicles and up to
70 feet for size 70 vehicles. Extension and retraction shall be governed by a hydraulic control
lever. Rotation shall be governed by a hydraulic control lever, either separately or in
combination with extension and retraction. All revolving components shall be furnished with
lubrication fittings. All bushings shall be capable of replacement and shall be provided with
lubrication fittings.
3.6.2.1 Derrick construction. The derrick shall be designed, engineered, and constructed
of materials that display the minimum weight conducive to the configuration and maximum
performance requirements specified herein. The hydraulic lines and other associated parts which
are fastened to or inside the derrick assembly shall be positioned for easy inspection, ready
maintenance, and possible replacement and shall have maximum protection against damage
afforded by the configuration of the derrick assembly. The derrick shall be attached to the turret
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