JS3T, JS6T, and JS12T
3
Rev. 4/14/20
ASSEMBLY INSTRUCTIONS
OPERATING INSTRUCTIONS
PREVENTIVE MAINTENANCE
1. Install the support column in the stand where the support column teeth are facing toward the stand's locking pawl.
2. Raise the stand's locking handle to allow the column to go to its lowest position.
3. In order to prevent removal of the support column from the stand, use a hammer and flat end punch to hammer the jack's tab in toward the column but
not touching the column. Some stands are equipped with a bolt instead of a tab. In this case the bolt can be threaded in toward the column until the bolt
bottoms out. See figure 1 on page 4.
Failure to follow these Assembly Instructions may result in serious injury or death, and/or property damage.
Failure to follow these Operating Instructions may result in serious injury or death, and/or property damage.
Failure to follow these Preventive Maintenance instructions may result in serious injury or death, and/or property damage.
1. Make sure the work floor is clean and free of debris and obstacles.
2. Chock the vehicle's tires that will not be lifted. Make sure the emergency brake is on and the vehicle's transmission is either in the park mode or gear
if a manual transmission.
3. Raise the vehicle to a safe working height and make sure the jack and vehicle setup are stable before positioning the jack stands.
DO NOT CRAWL
UNDER THE VEHICLE TO POSITION OR REMOVE STANDS.
4. Position the jack stands right below the areas of the vehicle support points as specified by the vehicle manufacturer.
5. Lift the support columns as close to the vehicle as possible without the saddles on the columns coming in contact with the vehicle. Make sure the
support columns' teeth are engaged with the locking pawls.
6. Slowly and carefully lower the vehicle on the jack stands. Shock loads or loads dropped abruptly on stands can cause premature metal fatigue or even jack
stand failure depending on the weight of the vehicle and the speed of descent that impacts the jack stands' support columns. The load should be supported
in the center of the support column saddles, not the locating lugs of the saddles.
DO NOT CRAWL UNDER THE VEHICLE TO POSITION OR REMOVE STANDS.
7 Check the load for stability. If the load is not stable, lift the load off the stands and correctly reposition the stands.
8. When work is completed, raise the vehicle high enough off the stands where the jack stands can be easily removed.
1. Always store the jacks stands in a well protected area where they will not be exposed to inclement weather, corrosive vapors, abrasive dust, or any other
harmful elements. The stands must be cleaned of water, snow, sand, grit, oil, grease or other foreign matter before using.
2. Every jack stand owner is responsible for keeping the stand labels clean and readable. Use a mild soap solution to wash external surfaces of the jack stand.
Contact Mac Tools for a replacement label if your jack stand's label is not readable.
3. Inspect the jack stands before each use. Do not use the jack stands if any component is cracked, broken or bent. Do not use the jack stand if it has loose
or missing hardware or components, or is modified in any way. Take corrective action before using the jack stand again. Premature wearing or damage to
components caused by loose or missing hardware is not eligible for warranty consideration.
WARNING
WARNING
WARNING
JS3T, JS6T, AND JS12T
3-TON, 6-TON , AND 12-TON
CAPACITY JACK STANDS (PAIR)
