Question

1. jack up the vehicle using a jack

put the jack under the correct lifting point of the vehicle, this information can be found in the vehicle owners or manufacturer service manual. avoid the weak parts of the vehicle body, such as the floor pan, radiator support and suspension members; as the jack or jack stands can penetrate or damage these parts!

1. use jack stands to support the load

place the jack stand under the correct lifting/supporting points of the vehicle (consult the vehicles owners or shop manual), slowly lower the jack until the jack stand fully supports the weight.
repeat step 5 and 6 for the other jack stands

1. check the stability of the vehicle

check the stability of the vehicle by gently rocking vehicle, the vehicle should have no significant movement; otherwise the vehicle is not securely supported by the jack stands.

1. remove the jack stands

when youre finished with your work, jack up the vehicle using a jack, remove the jack stands and gently lower the jack until the vehicle rests on the ground.
1
jack stands come in all sorts of heights and weight handling capacity.
which of the following is true.
concrete blocks or bricks are suitable replacements for jack stands.
it is better use jack stands rated to handle much more weight than required than to use stands that are under rated.
as long as the jack is rated to handle the vehicle weight, jack stands are not necessary.

Explanation:

Concrete blocks or bricks are not reliable and can be dangerous as replacements for jack stands. Using under - rated jack stands can be risky as they may not support the vehicle properly. Even if the jack can handle the vehicle weight, jack stands are necessary for added safety and stability while working under the vehicle. It is better to use jack stands rated to handle more weight than required to ensure safety and stability.

Answer:

It is better use jack stands rated to handle much more weight than required than to use stands that are under rated.