Torin TRA8205B Manual De Propietario página 9

SYNCHRONIZED LIFTS (DO NOT SYNCHRONIZE LIFT VEHICLES)
(a) When using jacks to lift the entire load in a synchronized lift, uneven raising and lowering can
cause cross loading, instability, and overloading.
(b) Some loads may require multiple lifting points and complex lifting procedures. A qualified person
shall analyze the operation and instruct all personnel involved in the proper selection and
positioning of the jacks and the movements to be made.
(c) When using multiple ratchet jacks simultaneously, ensure they are identical type (manufacturer,
make, model, and capacity), or lifting rate to ensure they are evenly loaded during jacking.
(d) Unsynchronized lowering can cause an overload to a jack and may result in kickback of the jack
handle or instability of the load.
Blocking
(a) While jacking, blocking should follow the load up or down to serve as an arresting device if the
load falls.
(b) Wedges or shims should be used as necessary to ensure the load is completely supported at its
blocking points.
(c) Blocking shall be of sufficient thickness, width, and length to prevent shifting, toppling, or
excessive settlement of the load.
(d) Blocking shall be of sufficient strength to prevent crushing, bending failure or shear failure, and
to adequately transmit the load's weight to the supporting surface.
Horizontal jacking
a. Applications may arise where jacks are used in a position other than vertical. These
applications, referred to as horizontal jacking, require special attention.
b. Horizontal jacking shall comply with the requirements of, Operating Practices, as applicable
c. A plan shall be developed and communicated to affected personnel before horizontal jacking
operations begin. The plan shall consider but not be limited to the following:
1. Load weight
2. Effects of friction
3. Angle from horizontal plane
4. Load stability and control
5. Obstructions
6. Jack base support
a. When jacking horizontally, the base of the jack should be perpendicular to the direction of load
movement.
b. If multiple jacks are used, maintain parallel lines of force to prevent side loading of the jacks.
Note:
(a) No alterations, or modifications shall be made to this product.
(b) All replacement parts including pins, bolts, caps, and keepers shall meet or exceed the original
equipment manufacturer's specifications.
7. Jack support
8. Load contact point
9. Handle clearance
10. Center of gravity of the load
11. Personnel safety
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