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91L information

What is a 91L?

91L Construction Equipment Repairers are soldiers in the U.S. Army responsible for maintaining and repairing construction equipment such as bulldozers, cranes, graders, and hydraulic systems. They diagnose mechanical issues, perform preventive maintenance, and ensure that equipment is operational for engineering and construction missions. Their work is essential to keeping Army construction operations running smoothly, both in the field and at base. Training includes both classroom instruction and hands-on experience with a variety of heavy machinery.

What are the key skills and qualifications needed to thrive as a 91L?

To thrive as a 91L, you need a solid understanding of mechanical systems, hydraulics, and diesel engines, typically supported by completion of Army Advanced Individual Training (AIT) in the specialty. Familiarity with diagnostic tools, technical manuals, and Army maintenance management systems is essential. Attention to detail, problem-solving abilities, and effective teamwork are standout soft skills in this position. These skills ensure the reliable operation and rapid repair of critical construction equipment, directly supporting mission readiness and operational success.

What are some common challenges 91L Construction Equipment Repairers face in the field, and how can they prepare for them?

91L Construction Equipment Repairers often encounter challenges such as diagnosing complex issues in heavy machinery under time pressure and working in varying field conditions, including remote or combat environments. To prepare, it's helpful to become proficient in reading technical manuals, practice troubleshooting under simulated field conditions, and stay physically fit for demanding environments. Building strong communication skills is also important, as 91Ls frequently coordinate repairs with operators and other maintenance personnel to ensure equipment readiness.

What is the difference between 91L vs 91A?

Aspect91L (Construction Vehicle Repairer)91A (All Other Support Equipment Repairer)
CertificationsMilitary vehicle repair certifications, ASE certificationsSupport equipment repair certifications, military technical certifications
Work EnvironmentConstruction sites, military bases, vehicle maintenance facilitiesMilitary bases, support equipment maintenance areas
Industry UsageConstruction, military vehicle maintenanceMilitary support equipment repair across various units

Both 91L and 91A roles involve repairing military vehicles and support equipment, often requiring similar certifications. However, 91L focuses specifically on construction and combat vehicles, while 91A covers a broader range of support equipment. The choice depends on the specific equipment and environment you aim to work in.

More about 91L jobs

What job categories do people searching 91L jobs look for?

The top searched job categories for 91L jobs are:

91L jobs near you
Infographic showing various 91L job openings in the United States as of August 2026, with employment types broken down into 98% Full Time, 1% Part Time, and 1% Contract. Highlights an 99% Physical, and 1% Remote job distribution.

CDL Directional Drill Operator

MasTec Communications Group

Mansfield, TX • On-site

$20 - $25/hr

Full-time

Medical, Dental, Vision, Life, Retirement, PTO

This job post has expired 1 day ago. Applications are no longer accepted.

MasTec rating

7.4

Company rating: 7.4 out of 10

Based on 155 frontline employees who took The Breakroom Quiz

34th of 80 rated construction

Job description

Overview

At MasTec Communications Group we build for the future. Yours and ours. 

As a Directional Drill Operator/Locator, you will develop new skills, work in a safety-minded environment, and join us in expanding technology for a better community. Join the MasTec family and help us provide the highest level of quality service to our customers and communities while maintaining our commitment to safety!


Responsibilities

As a Directional Drill Operator/Locator, you will support directional drilling for installation of underground conduit and fiber optic cable. You believe in doing the job right. Being the best. And you’re up for the challenge.  

In addition, you will: 

  • Locate for Horizontal Directional Driller for installation of underground conduit and fiber optic cable.  
  • Operate a horizontal directional bore in collaboration with the Drill Locator to successfully install coax and fiber systems 
  • Ensure the safety of the public and other underground utility facilities 
  • Read utility locates and coordinates day lighting of these facilities 
  • Transport heavy equipment to and from the job site each day 

Qualifications

About You: 

  • Safety is a part of your day to day
  • You have a track record of completing work with a high level of quality
  • You have a knack for figuring out hard problems and enjoy a hands-on approach to your work
  • You are looking for long-term projects
  • You enjoy getting your hands dirty with your team
  • You have at least 2 years of utility directional drilling experience in an urban environment
  • You have experience with different size Vermeer or Ditch Witch drills
  • You have the ability to read and understand maps, drawings and diagrams for project build process
  • You have a valid Class A CDL with a clean driving record
  • You want to make an impact with your local community and enjoy being home daily 

MOS Codes 12K, 12N,12V, 12W, 21E, 21J, 25P, 91C, 91L, 11B, 1100, 1120, 1316, 9970-9975, 0612, 2T3XX, 2E1XX, 3E2XX, 3E3XX, 9T0XX, BU, UT relate well to this position. 

Compensation of $20-$25 per hour.

Hard work pays off. See what you’ll get for your effort: 

Financial Security 

  • 401(k) with company match
  • Employee Stock Purchase Plan (ESPP) 
  • Life insurance
  • Short-term and Long-term disability
  • Red Wing Boot Voucher 

Health and Wellness 

  • Medical, dental and vision insurance 
  • Dependent care and medical flexible spending accounts
  • Employee Assistance Program (EAP) 

Work/Life Balance 

  • Paid time off 
  • Paid holidays
  • Family and medical leave
  • Paid sick time

Employee Referral Program 

Refer someone who delivers excellence just like you and receive a $1,000 incentive for a referral that becomes a permanent hire! 

We meet your commitment with competitive pay and benefits. If this sounds like you, let’s talk. Build your career with MasTec! 

MasTec, Inc. is an equal employment opportunity employer. The Company's policy is not to unlawfully discriminate against any applicant or employee on the basis of race, color, sex, sexual orientation, gender identity, religion, national origin, age, disability, genetic information, military status, or any other consideration made unlawful by applicable federal, state, or local laws. The Company also prohibits harassment of applicants and employees based on any of these protected categories. It is also MasTec's policy to comply with all applicable state, federal and local laws respecting consideration of unemployment status in making hiring decisions.

#MasTecJobs #MasTecCareers #BeSuccessfulWithUs #IAmMasTec #WeAreMasTec #MasTecFamily #MasTecCommunicationsGroup #MasTecCommunicationsCareers

Qualifications:

About You: 

  • Safety is a part of your day to day
  • You have a track record of completing work with a high level of quality
  • You have a knack for figuring out hard problems and enjoy a hands-on approach to your work
  • You are looking for long-term projects
  • You enjoy getting your hands dirty with your team
  • You have at least 2 years of utility directional drilling experience in an urban environment
  • You have experience with different size Vermeer or Ditch Witch drills
  • You have the ability to read and understand maps, drawings and diagrams for project build process
  • You have a valid Class A CDL with a clean driving record
  • You want to make an impact with your local community and enjoy being home daily 

MOS Codes 12K, 12N,12V, 12W, 21E, 21J, 25P, 91C, 91L, 11B, 1100, 1120, 1316, 9970-9975, 0612, 2T3XX, 2E1XX, 3E2XX, 3E3XX, 9T0XX, BU, UT relate well to this position. 

Compensation of $20-$25 per hour.

Hard work pays off. See what you’ll get for your effort: 

Financial Security 

  • 401(k) with company match
  • Employee Stock Purchase Plan (ESPP) 
  • Life insurance
  • Short-term and Long-term disability
  • Red Wing Boot Voucher 

Health and Wellness 

  • Medical, dental and vision insurance 
  • Dependent care and medical flexible spending accounts
  • Employee Assistance Program (EAP) 

Work/Life Balance 

  • Paid time off 
  • Paid holidays
  • Family and medical leave
  • Paid sick time

Employee Referral Program 

Refer someone who delivers excellence just like you and receive a $1,000 incentive for a referral that becomes a permanent hire! 

We meet your commitment with competitive pay and benefits. If this sounds like you, let’s talk. Build your career with MasTec! 

MasTec, Inc. is an equal employment opportunity employer. The Company's policy is not to unlawfully discriminate against any applicant or employee on the basis of race, color, sex, sexual orientation, gender identity, religion, national origin, age, disability, genetic information, military status, or any other consideration made unlawful by applicable federal, state, or local laws. The Company also prohibits harassment of applicants and employees based on any of these protected categories. It is also MasTec's policy to comply with all applicable state, federal and local laws respecting consideration of unemployment status in making hiring decisions.

#MasTecJobs #MasTecCareers #BeSuccessfulWithUs #IAmMasTec #WeAreMasTec #MasTecFamily #MasTecCommunicationsGroup #MasTecCommunicationsCareers

Education:UNAVAILABLEEmployment Type: FULL_TIME

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