mos.directory

Navy NEC · Engineering

U24A LSD 41/49 Class Colt Pielstick Maintainer

Current service use not established

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

A Navy Enlisted Classification: a skill designation sailors hold in addition to their rating.

Browse Navy

Overview

The LSD 41/49 Class Colt Pielstick Maintainer operates Fairbanks Morse and Colt Pielstick diesel engines. This maintainer performs organizational or intermediate maintenance on these engines and their associated auxiliary equipment.

Core Skills

  • Colt Pielstick 2.5V operation and maintenance
  • Diesel engine ancillary equipment maintenance

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.

Bus and Truck Mechanics and Diesel Engine Specialists

Organizational maintenance on Colt Pielstick 2.5V diesel engines provides directly relevant experience for the diesel-engine portion of this occupation.

How to prepare: Take a hands-on course in truck diesel diagnostics to bridge from marine engines to vehicle-specific systems and diagnostic equipment.

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

Maintenance Workers, Machinery

Organizational maintenance of diesel engines and their ancillary equipment provides a mechanical maintenance foundation for servicing industrial machinery.

How to prepare: Complete hands-on training in dismantling, reassembling, and lubricating the machinery used by a target employer.

What the civilian work involves
  • Dismantle machines and remove parts for repair, using hand tools, chain falls, jacks, cranes, or hoists.
  • Reassemble machines after the completion of repair or maintenance work.
  • Lubricate or apply adhesives or other materials to machines, machine parts, or other equipment according to specified procedures.
Civilian tools and software (examples)
  • Computerized maintenance management system software CMMS

Notes & Sources

Evidence for this guidance (3 documents)
  1. NAVPERS 18068F Vol II (NEOCS, Jul 2026 edition): NEC U24A

    [1] NEC entry "U24A - LSD 41/49 Class Colt Pielstick Maintainer"; cached text line 11685; NAVPERS 18068F Vol II, 2026-07 edition

    Supports: Colt Pielstick 2.5V operation and maintenance, Diesel engine ancillary equipment maintenance, Bus and Truck Mechanics and Diesel Engine Specialists (O*NET 49-3031.00), Maintenance Workers, Machinery (O*NET 49-9043.00)

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

    [2] O*NET 30.3 occupational data

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

  3. O*NET: Maintenance Workers, Machinery

    [3] O*NET 30.3 occupational data

    Supports: Maintenance Workers, Machinery (O*NET 49-9043.00)

Defense contractor jobs for U24A

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

Report an error on this page