Mechanical Specialist B


Arc welds ferrous and non-ferrous materials by use of electric arc process in all positions per AWS D 15.1. Performs repairs, changes, improvements and conversions to car parts and assembles such underframe, trucks, insulation jackets, etc. dismantles, repairs, installs and/or renews coils, valves and miscellaneous tank car fittings. Performs testing operations on rolling stock as required.



  • Prepares equipment and surfaces, welds, burns, fits, tacks as necessary to complete repairs. 
  • Finishing weld by removing slag and grinding when necessary. 
  • Locates and tests areas to be welded for leaks by use of soapsuds and air, rechecking as necessary.
  • Jacks car, remove, replace, disassemble, assemble trucks to repair or gain access to parts needing repair.
  • Remove, replace, straighten, renew or replace various car parts such as couplers, gears, center sills, safety appliances, insulation, jackets, running boards, slabs as required to achieve proper repairs. 
  • Installs, tests, repairs renews interior or exterior coils, cradles, and brackets. Hydrostatic test of tank, inspects for leakage, repair and restests as required.
  • Replace, repair defective piping as required.
  • Sets up and operates bending, threading, and cutting equipment to shape and fabricate pipe for installation. Apply levers, rods and similar equipment that is installed in conjuction with car piping.
  • Perform minor prevention maintenance on tools and equipment used.
  • Keeps work area in a clean and orderly manner.
  • Comply with the established safety policies, support-continuing awareness for safety, and when possible recommend specific changes and improvements to health and safety policies and programs.


  • High School diploma or general education degree (GED) required.
  • Ability to read and interpret documents such as IO instructions, FM instructions, work orders, and AAR Field Manual.
  • Ability to add, subtract, multiply or divide two digit numbers.
  • Ability to reason through and plan work details and procedures to obtain desired results.
  • Must be able to stoop for extended periods and routinely move from kneeling to standing positions.
  • Must be able to perform overhead work for extended periods.
  • Ability to safetly lift up to 51 lbs regularly and safely lift up to 85 lbs occasionly from the ground surface.  
  • Must be able to push/pull horizontally up to 140 lbs of force. 
  • Must be able to climb ladders and perform work at elevated heights.
  • Must be able to work in extreme temperature environments. 
  • Must be able to physically enter confined space and work in enclosed environments. 

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