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Job Title:
Heavy Mobile Equipment Repairer, WG - 5803, Grade 08; $23.84 to $27.81 hourly
Type of Position:
Federal, Permanent
Job Location:
Amado, Arizona
Posting Opening Date:
Posting Closing Date:

Clarification from the agency

This position is open to all U.S. Citizens or U.S. Nationals. Federal employees with permanent status or individuals eligible for special appointing authorities may also apply to Job Announcement 22-17


  1. Performs maintenance, investigates the cause of malfunctions, and makes repairs-including welding--to heavy mobile equipment and vehicles such as cranes, loaders, graders, backhoes, dump/plow trucks, water trucks and lifts having mechanical, hydraulic, pneumatic, and electrical systems, controls, or features not commonly found on automobiles and ordinary transport trucks. Determines when parts should be cleaned and adjusted, or require replacement with standard parts.
  2. Performs preventative maintenance and repair on automotive vehicles to ensure their safety for mountain use.
  3. Utilizes a wide variety of test and diagnostic equipment such as automotive diagnostic scanners, tire pressure monitoring scanners, hydrometers, compression and pressure gauges, calipers, feeler gauges, micrometers, voltage testers, and amp meters to analyze malfunctions and test both components and overall vehicle operation and performance.
  4. Assists senior heavy automotive equipment mechanics in disassembling, repairing, and assembling major systems, components, and operating mechanisms and/or the complete overhaul and repair of major systems such as engines, transmissions, drive lines, and hydraulic components.
  5. Operates heavy equipment such as forklifts, man lifts, front-end loaders, backhoes, cranes, etc. in open areas and on level, hilly and/or mountainous terrain to move earth, rocks, sand, stumps and other equipment. Utilizes forklifts and cranes to offload and store freight deliveries. May be required to transport delicate optical and scientific equipment, or transport liquid nitrogen Dewar’s to telescope sites.
  6. Performs a variety of routine tasks such as delivery and pick-up of light and heavy objects at the Administrative Complex and mountain facilities, fueling all types of vehicles and heavy equipment on the mountain, and performing minor servicing of all types of vehicles and heavy equipment. Serves as an alternate driver for Tucson pick up of goods.
  7. Performs other related duties as assigned.

    Applicants MUST have a valid driver's license with at least a Class A CDL with airbrake and kingpin tow  endorsements. In accordance with the Smithsonian Institution's Drug and Alcohol Testing and Medical Examinations for Commercial Drivers Program, tentative selectees must pass a drug test AND physical examination in order to be offered an appointment.

    The selectee will be required to obtain a hazmat endorsement within the first year of employment.

    Annual physical examinations are required to maintain a Commercial Driver's License (CDL) and to be certified for using a respiratory for a limited number of tasks. 

    An annual respirator fit testing and training is required.

    PHYSICAL REQUIREMENTS: The work requires frequent standing, bending, reaching, stretching, climbing, crouching, and working in tiring or uncomfortable positions for long periods. It includes work in cramped or awkward positions on top of, under, and in tight compartments of vehicles. Strenuous work is performed while standing, lying, or sitting. The incumbent will be required to lift and carry items weighing up to 40 pounds, unassisted, as well as exert similar effort in pushing, pulling, and positioning parts, assemblies, and equipment.  Lifting and moving heavier items with the assistance of other workers or with lifting devices such as jacks, hoists, and cranes is also required, as is working from ladders or work platforms at varying heights.

    Working Conditions: Duties at the Ridge telescopes and on other areas of the mountain are recurring.  The environment can be extreme, and range from dry heat to bitter cold.  Travel to the Ridge or higher over a mountain road an be hazardous, and involve exposure to snow and rain, lightning, and flash floods.


    Your overall experience and training must indicate that you have the minimum knowledge, skills, abilities needed to perform the duties of this position. There is no substitution of education for experience for this position. Qualification requirements must be met by the closing date of the announcement. Additional information on the Job Qualification System for Trades and Labor Occupations can be found on OPM's web site at

APPLICATION PROCEDURE We will only accept applications on line for this position.  For complete information about this position and the online application procedures, please visit: USAJOBS

For the latest information on the COVID-19 vaccination requirements and its impact on your application, click on Smithsonian Institution’s Frequently Asked Questions

The Smithsonian Astrophysical Observatory is an equal opportunity employer committed to diversity in our workplace

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