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Subchapter 7. General Industry Safety Orders
Group 3. General Plant Equipment and Special Operations
Article 19. Automotive Lifts

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§3541. Definitions.

(a) Automotive Lift. A hydraulic or mechanical vehicle lifting device used to raise an entire vehicle to provide accessibility for convenient under-chassis service.

(b) Hydraulic Lift. A full hydraulic or semi-hydraulic (hydro-pneumatic) vehicle lifting device which employs one or more plungers actuated by a liquid under pressure encased in a cylinder or cylinders; plunger or plungers equipped with suitable load carrying members; the pressure being generated by compressed air, by pump or other suitable means.

(c) Full Hydraulic Lift. A vehicle lifting device of the plunger type which employs a liquid under pressure as the direct lifting and load sustaining agent. Such a lift is so designed ad constructed that the full weight of the load and the lifting assembly rest on a continuous column of liquid which extends from the cylinder to the liquid control valve.

(d) Mechanical Lift. A vehicle lifting device so designed that the motive power is transmitted to the lifting frame by mechanical means. It is divided into three principal classes:

(1) cable and drum;

(2) rack and pinion; and

(3) screw.

(e) Hydro-pneumatic Lift. A semi-hydraulic vehicle lifting device of the plunger type which employs compressed air as the primary lifting and load sustaining agent; such compressed air acts continuously against a column of liquid to provide the lifting and load sustaining effort.

NOTE: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.


1. Amendment filed 10-15-85; effective thirtieth day thereafter (Register 85, No. 44).

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