 |
|||
|
|
|||
| ||||||||||
|
|  MIL-C-53057(ME)
application force of not less than 300 pounds 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
crane without load when the crane is stopped on a 25 percent grade in
both the ascending and descending attitude when tested in accordance
with test method 6. The parking brakes shall be hand- or foot-
operated and equipped to remain applied until manually released by
the operator. 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 50 pounds. The foot pedal force shall
not exceed 75 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 crane shall provide not
less than six "dead engine" stops while descending a 25 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 crane 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 crane as defined in SAE J898.
3.21 Cowl or hood. The engine shall be protected by a hood cover and
sideplates, except that sideplates may be omitted when the wheel
guards provide the engine compartment with protection from road
splash and debris. The sideplates shall be either the quick opening
or the bolted type with quick access openings for the performance of
daily maintenance checks. The sideplate shall be capable of being
opened or removed by one person wearing gloves. Elastomer hood
latches or paddle latches shall be provided on the quick opening type
sideplates or the quick access opening of the bolted type sideplates.
The elastomer latches shall withstand an air ozone rating of two or
better in accordance with ASTM D1171. Handtools shall not be required
to release these latches. All engine accessories shall be completely
accessible without requiring the removal of any additional crane
components when the hood cover and sideplates are opened/removed.
3.22 Instrument panel. The instrument panel shall be located
inside the operator's compartment so that the operator can read the
instruments from his normal operation position. The instrument panel
shall be installed on an incline at a minimum of 5 degrees to a
maximum of 80 degrees. On this panel shall be mounted the charging
system monitor, engine oil-pressure-monitor, engine-coolant
temperature monitor, rear steer indicator warning light, torque
27
|
|
Privacy Statement - Press Release - Copyright Information. - Contact Us |
Click
here for thousands of PDF manuals