Section R. 408.13838 - Jacks; useRule 3838.
(1) The rated capacity of a jack shall not be exceeded. The rated capacity shall be permanently marked on the jack.(2) A jack shall be set on or against a firm foundation or blocking. If a jack, at the point of contact with the load, can slip, a wood block or nonslip device shall be placed between the cap and the load.(3) A jack shall be equipped with a means such as, but not limited to, a stop, a bypass, an indicator or other device which shall be watched to prevent overrun.(4) After a load has been raised or moved, it shall be secured by cribbing, blocks or stands before work is started under or between the supported load.(5) A hydraulic jack exposed to freezing temperatures shall be protected by use of an anti-freeze liquid.Mich. Admin. Code R. 408.13838