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Army MOS · Logistics

91M BRADLEY Fighting Vehicle System Maintainer

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

A Bradley Fighting Vehicle System Maintainer performs and supervises unit maintenance on Bradley fighting vehicle systems. They replace major assemblies and line replaceable units on M2 and M3 Bradley variants, the M6 Linebacker, and the M7 Bradley Fighting Infantry Support Team hulls and turrets.

Minimum ASVAB: MM 99

ASVAB policy: Not policy-reviewed · coverage unknown · as of 2026-10-18

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: smartbook-611-21-ch10c-fy2025 (source date 2025-12). Policy applicability has not been established.

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Core Skills

  • Major assembly and line-replaceable unit replacement
  • Hull and turret unit 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.

Mobile Heavy Equipment Mechanics, Except Engines

Bradley hull and turret maintenance, including major assembly and line-replaceable unit replacement, transfers directly to heavy equipment component repair and replacement.

How to prepare: Practice using a civilian heavy equipment manufacturer's service manual to plan a component replacement and its post-repair performance checks.

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.
  • Dismantle and reassemble heavy equipment using hoists and hand tools.
Civilian tools and software (examples)
  • Maintenance management software

Maintenance Workers, Machinery

Replacing Bradley assemblies and line-replaceable units provides relevant experience for removing, replacing, and reassembling industrial machinery components.

How to prepare: Seek supervised practice replacing and reassembling parts on industrial machinery according to production specifications.

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.
  • Install, replace, or change machine parts and attachments, according to production specifications.
Civilian tools and software (examples)
  • Computerized maintenance management system software CMMS

Notes & Sources

Evidence for this guidance (3 documents)
  1. Army COOL MOC feed: 91M BRADLEY Fighting Vehicle System Maintainer

    [1] data/authority/army-codes.json entry 91M (OSD COOL feed, fetched 2026-07-25); DB rank enlisted, authority codeType enlisted

    Supports: Major assembly and line-replaceable unit replacement, Hull and turret unit maintenance, Mobile Heavy Equipment Mechanics, Except Engines (O*NET 49-3042.00), Maintenance Workers, Machinery (O*NET 49-9043.00)

  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: Maintenance Workers, Machinery

    [3] O*NET 30.3 occupational data

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

Defense contractor jobs for 91M

Predecessor codes

Historical codes with documented links to 91M. Each history page explains the change.

63M1Bradley Fighting Vehicle System Maintainer63M2Bradley Fighting Vehicle System Maintainer63M3Bradley Fighting Vehicle System Maintainer63M4Bradley Fighting Vehicle System Maintainer

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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