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Marine Corps MOS · Engineering

1341 Engineer Equipment Mechanic

Current service use not established

This code is listed in the directory. Inclusion alone does not confirm current service use.

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Overview

Engineer Equipment Mechanics perform preventive maintenance and repairs on diesel engines and gasoline or diesel powered construction equipment. They service material handling, earthmoving, engine driven, and towed equipment.

Minimum ASVAB: EL 90 or MM 90

ASVAB policy: Not policy-reviewed · coverage unknown · as of 2026-10-19

Program scope has not been reviewed.

Policy applicability and coverage of the program's score routes have not been reviewed. Shown-route arithmetic is not an eligibility decision.

Source: navmc-1200-1l-fy26 (source date 2025-03). Policy applicability has not been established.

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Core Skills

  • Diesel engine preventive maintenance and repair
  • Material-handling and earthmoving equipment repair

Civilian Career Paths

Career associations are editorial assessments of the cited evidence, not an official crosswalk unless the evidence explicitly says so. O*NET supplies civilian occupation information, not proof of a military match. Related experience does not confer civilian qualifications. Tasks and tools below describe civilian work, not military training.

Mobile Heavy Equipment Mechanics, Except Engines

Repairing and maintaining military material-handling, earthmoving, and construction equipment transfers directly to civilian heavy equipment repair.

How to prepare: Use a civilian equipment manufacturer's service manual to practice its inspection and post-repair testing procedures on equipment you intend to service.

What the civilian work involves
  • Repair and replace damaged or worn parts.
  • Test mechanical products and equipment after repair or assembly to ensure proper performance and compliance with manufacturers' specifications.
  • Operate and inspect machines or heavy equipment to diagnose defects.
Civilian tools and software (examples)
  • Maintenance management software
  • Recordkeeping software

Bus and Truck Mechanics and Diesel Engine Specialists

Military diesel engine preventive maintenance and repair provides a direct foundation for civilian diesel engine service.

How to prepare: Take hands-on training in civilian diesel diagnostics, including test-instrument use and diagnostic software such as Cummins INSITE.

What the civilian work involves
  • Use handtools, such as screwdrivers, pliers, wrenches, pressure gauges, or precision instruments, as well as power tools, such as pneumatic wrenches, lathes, welding equipment, or jacks and hoists.
  • Attach test instruments to equipment, and read dials and gauges to diagnose malfunctions.
Civilian tools and software (examples)
  • Cummins INSITE
  • Computerized maintenance management system software CMMS

Training & Development

Choose credentials for your target role. COOL funding markers describe program listings, not a guarantee of eligibility or funding.

Career Growth

  • Certified Maintenance and Reliability Professionals (CMRP)

    Develop equipment reliability and work-management knowledge beyond hands-on heavy equipment repair.

    Eligibility and preparation: No education or work-experience minimum; candidates must not have taken the exam within the preceding six months.

    For: Mobile Heavy Equipment Mechanics, Except Engines

Notes & Sources

Evidence for this guidance (5 documents)
  1. NAVMC 1200.1L (FY26, in force): MOS 1341

    [1] MOS 1341 section "a. Summary"; cached text line 33081; NAVMC 1200.1L signed 2025-03-07, in force until 2026-10-01

    Supports: Diesel engine preventive maintenance and repair, Material-handling and earthmoving equipment repair, Mobile Heavy Equipment Mechanics, Except Engines (O*NET 49-3042.00), Bus and Truck Mechanics and Diesel Engine Specialists (O*NET 49-3031.00)

  2. O*NET: Mobile Heavy Equipment Mechanics, Except Engines

    [2] O*NET 30.3 occupational data

    Supports: Mobile Heavy Equipment Mechanics, Except Engines (O*NET 49-3042.00)

  3. O*NET: Bus and Truck Mechanics and Diesel Engine Specialists

    [3] O*NET 30.3 occupational data

    Supports: Bus and Truck Mechanics and Diesel Engine Specialists (O*NET 49-3031.00)

  4. COOL credential mapping: Certified Maintenance and Reliability Professionals (CMRP)

    [4] 1341 cached COOL credential feed

    Supports: Certified Maintenance and Reliability Professionals (CMRP)

  5. Society for Maintenance and Reliability Professionals: CMRP eligibility

    [5] Eligibility; retrieved 23 September 2026

    Supports: Certified Maintenance and Reliability Professionals (CMRP)

Defense contractor jobs for 1341

Descriptions may be summarized for clarity. Verify all information with your branch career counselor or official military documentation before making career decisions.

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