Jacks 29 CFR

All jacks (lever and ratchet jacks, screw jacks, and hydranlic jacks) mnst have a device that stops them from jacking np too high. Also, the mannfacturer s load limit mnst be permanently marked in a prominent place on the jack and shonld not be exceeded. A jack shonld never be nsed to snpport a lifted load. Once the load has been lifted, it must immediately be blocked up. Use wooden blocking under the base if necessary to make the jack level and secnre. If the lift snrface is metal, place a 1-inch-thick hardwood block or eqnivalent between it and the metal jack head to rednce the danger of slippage. To set np a jack, make certain of the following  

Proper maintenance of jacks is essential for safety. All jacks must be inspected before each use and Inbricated regnlarly. If a jack is subjected to an abnormal load or shock, it should be thoroughly examined to make sure it has not been damaged. Hydraulic jacks exposed to freezing temperatnres must be filled with adequate antifreeze liquid. 

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