Product Manual

7
JACKING PRACTICES
a. All mechanical jacks shall be used according to the manufacturer's recommendations.
b. A plan should be developed and communicated to affected personnel before the jacking
operation begins. The plan should include load-handling procedures and communication
methods.
c. Off-center loading of the primary load point should be avoided.
d. When jacking, ensure that the load avoids contact with any obstructions.
e. When jacking, ensure that the primary or auxiliary load point is properly positioned under the load
to avoid tip- or edge-
f. When jacking one side or end of a load, ensure the opposing side or end is-stabilized with
sufficient blocking.
g. The jack handle, primary and auxiliary load points, and the jack base should be free of slippery
material or fluids.
h. When jacking, a load should be raised or lowered in a limited range. Avoid jacking the side or end
of the load on more than a 3% grade.
i. When lifting one side of an object with a high center of gravity, personnel should be on the side of
the load that is being lifted.
j. A load shall not be left unattended while supported by jack. Jack Stands should be used to
support unattended loads.
k. The load weight and center of gravity shall be determined prior to selecting and placing jacks and
blocking.
l. Before jacking a load, consideration shall be given to fluids or other shifting materials that can
change the location of the center of gravity.
m. The base of the jack should be supported by a hard level surface (such as farm jack jacking pads,
concrete, steel, or wood blocking) capable of supporting the load.
n. The force of the jack's load point should be placed or distributed to prevent damage to the load.
o. A jack handle of the size and length specified by the manufacturer shall be used. Never use an
over length jack handle, extender, or "cheater pipe" over the handle.
p. Ensure there is adequate range of motion for the jack handle to completely engage the operating
linkage of the jack.