Diagnose, adjust, and repair various types of truck equipment including, but not limited to the following: Electrical/Brake/Cooling Systems, Starters/Alternators, Air conditioning systems, Fan clutches, Engine electronics, Power steering systems, Engines (gas and diesel), Transmissions. TNA Fleet Services is a family owned and growing On-Site Mobile Service company (not roadside, not emergency services) looking for experienced Mobile Diesel Mechanics to join our Team.