CMF 91 Mechanical Maintenance: Army jobs by ASVAB score
Repair of wheeled and tracked vehicles, generators, weapons and construction equipment. This site lists 12 Mechanical Maintenance MOS entries, each verified against the official Army specification. Every threshold below is a line score minimum, not an AFQT percentile.
GT · MM · GM
3 aptitude areas across 12 jobs.
Mechanical Maintenance jobs ranked by ASVAB threshold
Ordered by the lowest score that satisfies each rule; for OR rules the easier path is used. Thresholds in different line scores are not directly comparable. Open any MOS for its subtests, gap guidance and alternatives.
| # | MOS | Job | ASVAB requirement | Line score | Checked |
|---|---|---|---|---|---|
| 1 | 91H | Track Vehicle Repairer | MM ≥ 90 or (MM ≥ 85 and GT ≥ 85) | MM, GT | 2026-09-12 |
| 2 | 91J | Quartermaster and Chemical Equipment Repairer | MM ≥ 87 or (MM ≥ 82 and GT ≥ 85) | MM, GT | 2026-09-12 |
| 3 | 91L | Construction Equipment Repairer | MM ≥ 87 or (MM ≥ 82 and GT ≥ 85) | MM, GT | 2026-09-12 |
| 4 | 91B | Wheeled Vehicle Mechanic | MM ≥ 92 or (MM ≥ 87 and GT ≥ 85) | MM, GT | 2026-09-11 |
| 5 | 91F | Small Arms/Artillery Repairer | GM ≥ 93 or (GM ≥ 87 and GT ≥ 85) | GM, GT | 2026-09-12 |
| 6 | 91S | Stryker Systems Maintainer | (MM ≥ 87 and GT ≥ 85) or MM ≥ 92 | MM, GT | 2026-09-12 |
| 7 | 91C | Utilities Equipment Repairer | GM ≥ 93 or (GM ≥ 88 and GT ≥ 85) | GM, GT | 2026-09-12 |
| 8 | 91D | Power-Generation Equipment Repairer | GM ≥ 93 or (GM ≥ 88 and GT ≥ 85) | GM, GT | 2026-09-12 |
| 9 | 91A | M1 Abrams Tank System Maintainer | MM ≥ 99 or (MM ≥ 88 and GT ≥ 90) | MM, GT | 2026-09-12 |
| 10 | 91M | Bradley Fighting Vehicle System Maintainer | MM ≥ 99 or (MM ≥ 88 and GT ≥ 90) | MM, GT | 2026-09-12 |
| 11 | 91P | Artillery Mechanic | MM ≥ 99 or (MM ≥ 88 and GT ≥ 90) | MM, GT | 2026-09-12 |
| 12 | 91E | Allied Trades Specialist | (GM ≥ 88 and GT ≥ 95) or GM ≥ 98 | GM, GT | 2026-09-12 |
Line scores behind Mechanical Maintenance jobs
The subtests shown are the Army's nominal definition of each aptitude area from DA PAM 611-21, Military Occupational Classification and Structure, Table 10-1 (ASVAB aptitude area composites). The reported score is computed on the 1997 scale as a weighted sum of seven standard scores (DMDC 2004, Table 2.7), which can give weight to subtests outside the nominal list; GT is the exception and equals AR + VE exactly. Improving a subtest therefore raises several composites at once. The Army score guide explains each line score; use the line score on your report, or compute it from your standard scores.
VE (verbal: WK and PC) + AR
Required by 12 of 12 verified Mechanical Maintenance jobs.
NO + AS + MC + EI
Required by 8 of 12 verified Mechanical Maintenance jobs.
GS + AS + MK + EI
Required by 4 of 12 verified Mechanical Maintenance jobs.
Preparing for a Mechanical Maintenance job
Practice on this site: WK (Word Knowledge), PC (Paragraph Comprehension), AR (Arithmetic Reasoning), AS (Auto and Shop Information), MC (Mechanical Comprehension), EI (Electronics Information), GS (General Science), MK (Mathematics Knowledge) feed the GT, MM, GM scores used in this field. Start a WK, PC, AR, AS, MC, EI, GS, MK practice set →
Practice scores are raw counts and never convert into an official line score. Enter the line scores from your ASVAB report in the score checker to compare against every verified job at once.
Frequently asked questions
What is the lowest ASVAB score for a Mechanical Maintenance job in the Army?
Among the 12 currently verified CMF 91 entries on this site, the lowest entry threshold is MM ≥ 90 or (MM ≥ 85 and GT ≥ 85) for 91H Track Vehicle Repairer. The highest is (GM ≥ 88 and GT ≥ 95) or GM ≥ 98 for 91E Allied Trades Specialist. Each figure is a minimum line score, not an AFQT percentile.
Which ASVAB line scores do Mechanical Maintenance jobs use?
GT (General Technical, VE (verbal: WK and PC) + AR) is required by 12 jobs; MM (Mechanical Maintenance, NO + AS + MC + EI) is required by 8 jobs; GM (General Maintenance, GS + AS + MK + EI) is required by 4 jobs. The line score on your ASVAB report is the number to compare.
Does meeting the ASVAB threshold guarantee a Mechanical Maintenance MOS?
No. The threshold is only the score condition from the Army MOS specification. Physical (OPAT), medical, security clearance, training-seat availability and component eligibility are decided separately by the Army and your recruiter.
Next steps
- Check your scores against every Mechanical Maintenance job and the rest of the Army catalog
- Read the Army score guide for what GT, MM, GM measures and the range of thresholds it must meet
- See what counts as a good score for enlistment versus for a specific field
- Browse every job by score range if your line score falls short of this field