Overhaul or modification of underground drilling machines refers to changes made to improve the performance, efficiency or features of an existing machine. These revisions may be aimed at increasing the power, drilling speed, precision, maneuverability or other features of the machines.
Revisions are usually made by companies that manufacture or sell the machines or by specialized service providers. Overhaul of machines can often include changes such as:
Revision of underground drilling machines may aim to make the machines work more efficiently, speed up work processes or provide cost savings. However, such overhauls are usually specialist work and are usually carried out by the manufacturer or authorized service providers.
I do not have specific information about any underground drilling machine revisions because there are many different machines and revision options in this field. Before carrying out overhauls or modifications, it is important to contact the companies or authorized service providers that manufacture or sell the relevant machines and request their advice or services