ASME PALD 11 pdf free download
ASME PALD 11 pdf free download WHEEL DOLLIES
5.1 .I Proof Load Test. A proof load as defined in para 3.4 shall be applied to the lift member. The load shall be lifted and sustained throughout the entire lifting range of travel with the load located midway between the front and rear of the lifting member.
5.1.2 Travel Limit Test. The lifting member shall be fully extended with no external load. The lifting mem- ber shall be operated, and further extension of the lifting member shall be prohibited by the travel limiting means.
5,1.3 Loaded Operational Test. A deadweight load, not less than the rated capacity of the wheel dolly and configured to simulate a dual wheel assembly of maximum wheel diameter with center of gravity about its center line and above midpoint of the lifting member, shall be mounted on the lifting member. The entire load shall be restrained on the lifting member, and the fol- lowing operational tests shall be performed.
5.1.3.1 Load Sustaining Test. A load not less than the rated capacity shall be applied to the lifting member at approximately 100% of its lifting range. The load shall not lower more than ‘/s in. (3 mm) in the first minute, nor a total of 3/~6 in. (4.8 mm) in 10 min.
5.1.3.2 Release Test. A load not less than the rated capacity shall be applied to the lifting member at approximately 100% of its lifting range. The release mechanism shall be operated to permit control of the load lowering to a rate of descent of no more than 3 in./ sec (75 mm/s).
5.1.3.3 Tilt Mechanism Test (if So Equipped). With the wheel dolly loaded as defined in para. 5.1.3 and with the lift member at its maximum height, the tilt mechanism shall be manipulated throughout its entire range of adjustment.
5.1.3.4 Roller Test. The deadweight load as de- fined in para. 5. l .3 shall be rotated to simulate the po- sitioning of the wheel on its hub assembly.
5.1.3.5 Mobility Test. The wheel dolly, while loaded symmetrically to rated capacity, shall be moved at 15 ft to 30 ft/min (4.6 m to 9.1 m/min) across a ‘h in. (13 mm) high, 15 deg. slope rise in the floor, and a ‘h in. (13 mm) drop to the floor, at an approach angle which will bring only one caster or wheel at a time in contact with the rise and drop. The wheel dolly shall traverse the rise and drop without loss of load, tipping over, or sustaining functional damage.
5.1.3.6 Stability Test. The wheel dolly with the lifting member in the lowest possible position shall be moved at 2 ft to 3 ft/sec (0.6 m to 0.9 m/s) against a 2 in. (50 mm) high vertical rise 90 deg. to the direction of movement at an approach angle which will bring one wheel or caster in contact with the rise at the point of greatest instability. The wheel dolly shall not lose the load or tip over.
Section 6 – Product Instructions and Warnings Each wheel dolly shall be provided with operator’s instructions. The instructions shall specify the proper operating procedures and basic function of the compo- nents. The instructions shall include the recommended replacement fluid and maintenance and inspection pro- cedures and intervals. The instructions shall convey the following messages, but need not be verbatim or limited to those listed, and shall be written using common words. All warnings shall be in bold letters. The word WARNING shall be used as a heading for the following statements.
