For commercial tire service work, determining the best lift and support points for the axle when using jacks and jack stands –- note that every vehicle is different.
It’s best to consult the vehicle manufacturer for the specific lifting and support points it recommends. However, without this recommendation, the general practice is to place the jack and jack stands directly under the axle.
LIFT TIPS FOR JACKS
- Never lift on the drive-axle housing or any drive-train component if the vehicle is loaded.
- Never lift on any moving component of the suspension system or on the end of the U-bolts.
- Never allow the jack or jack stands to lift or contact the vehicle at an angle.
- Never use one jack stand in the middle to support both ends of an axle.
- Always make sure the jack's saddle is centered on the lift point.
On trailers, position the jack near the end of the axle, making sure there is enough room for the support stands between the jack and the tire sidewall.
Center the jack saddle under the axle and then use the jack to lift the axle. When lifting both ends of the axle, a jack may be used in the middle of the axle if the vehicle is not fully loaded.
Once the axle is at the proper working height, place a matched pair of support stands set to the proper working height at both ends of the axle, and center their saddles under the axle.
Slowly lower the jack until the stands support the load. Once the service is complete, raise the axle in the middle to a height where the support stands can be removed.