Mining shield base lift methods

A method of replacing a wear pad on a base lift, comprising:

• unthreading an old wear pad using a bar placed into a spanner hole;
• removing the old wear pad from the cylinder rod;
• and
• threading a new wear pad onto the cylinder rod.

A method of removing an old wear pad from a base lift cylinder and installing a new wear pad on the base lift cylinder, comprising:

• loosening at least one retaining bolt threaded into an old wear pad until that retaining bolt does not impinge upon a cylinder rod;
• placing a bar in a spanner hole that extends into the old wear pad;
• rotating the wear pad using the bar until the old wear pad is loose on the base lift cylinder;
• removing the old wear pad from the cylinder rod;
• placing a new wear pad onto the cylinder rod;
• and
• tightening a retaining bolt through the new wear pad until it engages the cylinder rod.