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|  MIL-T-52843C
stop without any wheel leaving the ground from a speed of 10 mph as
follows:
a. Dry - within 15 feet with fishtailing of no more than 1 foot
when tested as specified in 4.6.2.18.
b. Fade - within 15 feet with fishtailing of no more than 1
foot when tested as specified in 4.6.2.18.
c. Wet - within 25 feet with fishtailing of no more than 1 foot
when tested as specified in 4.6.2.18.
Pedal force while making any stop shall not exceed 90 pounds. The
brake system shall provide for bleeding of air from hydraulic lines
and for draining of moisture from the compressed air system, as
applicable. Automatic or manual brake adjustment provisions shall be
provided. Automatic adjustment shall maintain correct lining to drum
or disk adjustment without looseness or lockup. Automatic adjusters
shall be enclosed or guarded for protection from environmental damage
or malfunction. The brake system shall withstand an operator's brake
application force of not less than 300 pounds as specified by ANSI
B56.6 at the pedal, a minimum of 10 times, without permanent
deformation or evidence of mechanical damage.
3.18.2 Parking system. The parking brakes shall provide on-grade
parking performance, but not necessarily stop the gross weight of the
forklift with rated load on the forks when the forklift is stopped on
a 30 percent grade in both the ascending and descending attitude when
tested in accordance with test method 7. The parking brakes shall be
hand-operated and equipped with a locking device. The manual control
shall be located within reach of the operator and in a noninterfering
position. Hand-lever pull to set the parking brake shall not exceed
70 pounds. The parking brake shall be an independent mechanical
friction brake mounted on the drive or propeller shaft rotating with
the wheels, or a separate isolated system actuating the service
brakes. Adjustment of parking-brake shoes or bands shall be
accomplished without the removal of any component parts.
3.18.3 Emergency braking provisions The truck shall provide not
.
less than six "dead engine" stops with rated load while descending
the 30 percent grade. The emergency braking provisions may be
provided through either the parking brake or service brake system.
Means shall be provided to release the brakes for towing.
3.19 Operator access. Operator-access systems to the forklift
shall be in accordance with minimum requirements of SAE J185.
3.20 Operator's seat. A cushioned bucket type operator seat shall
be furnished in accordance with minimum requirements of SAE J899 and
located in accordance with SAE J1163 to permit 90 percent of US
male/female operator population (SAE J833) to reach controls in the
optimum areas of the forklift as defined in SAE J898 by operator
clothed in NBC and cold-wet gear. The cushion material shall be foam
30
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