⚒WrenchReady
Illustration of a maintenance technician repairing a large motor on a conveyor line in a factory at night
Built by a tech who works the floor

Pass the test.
Get the job.
Keep the line running.

Free practice questions, plain-English troubleshooting, and interview prep for maintenance techs — written from real 3rd-shift experience, not a textbook.

120+Practice questions in the full pack
4Test areas: electrical, mechanical, fluid power, safety
5+ yrsOn the floor — millwright & plant maintenance
$0To start — the sampler below is free
Free sampler

Try real-style practice questions

This is the kind of stuff on the Ramsay and plant aptitude tests. Pick a category, answer, and read why — the explanation is where the learning happens.

Question 1 of 8

Questions written in the style of common maintenance aptitude tests. They're practice material — not copied test questions — and every answer is checked against standard trade practice.

Know what you're walking into

The three tests plants actually give

Most applicants fail because they studied the wrong thing. Here's what each test really covers.

Ramsay MecTest

The big one — most large plants

The most common maintenance aptitude test in manufacturing. Timed, multiple choice, and heavy on applied mechanical and electrical reasoning — not definitions.

  • Reading gauges, rulers & schematics
  • Gears, pulleys, belts & mechanical advantage
  • Basic circuits, motors & Ohm's law
  • Hydraulics & pneumatics fundamentals
  • Hand tools, fasteners & measurement
~60 questionsTimedNo calculator tricks — reasoning

Bennett Mechanical

Mechanical comprehension

All about whether you can look at a picture of a machine setup and predict what happens. Levers, pulleys, fluid pressure, heat, and everyday physics.

  • Which pulley spins faster — and why
  • Leverage & force direction
  • Pressure, flow & siphons
  • Center of gravity & stability
  • Simple machines in real setups
68 questions~30 minutesPicture-based

Plant Hands-On / Panel

The interview that follows the test

Pass the written test and many plants walk you to a machine or a panel of supervisors. They want to hear safe, methodical thinking out loud.

  • "Motor's tripping — walk me through it"
  • LOTO steps, in order, no shortcuts
  • Reading a print or a wiring diagram
  • Your troubleshooting order: power → control → load
  • Honesty about what you'd escalate
VerbalSafety firstThink out loud
From the floor

Troubleshooting guides that start where techs actually start

No 40-page manuals. The order a working tech checks things in — most likely and easiest first, power off when it needs to be off.

  1. Lock it out first. Full LOTO before hands go anywhere near it.
  2. Check the load, not the motor. Spin the shaft by hand (locked out). A seized gearbox, jammed conveyor, or bad bearing trips more motors than bad windings do.
  3. Meg / ohm the windings. Phase-to-phase should be balanced and low; phase-to-ground should be open. One leg way off = winding trouble.
  4. Check voltage under load. A dropped leg or low voltage makes a healthy motor draw high amps and trip.
  5. Look at the overload setting. Set to nameplate FLA — and find out if somebody "fixed" nuisance trips by turning it up.
Safety: Never just reset and run repeatedly. A tripping overload is telling you something — find it before it finds the motor.
  1. Run it empty and watch. Does it track off loaded, empty, or both? Loaded-only usually means off-center loading.
  2. Check for buildup. Material caked on rollers and pulleys acts like a crown and steers the belt. Clean before you adjust anything.
  3. Square the basics. Pulleys and idlers square to the frame, belt splice reasonably straight.
  4. Adjust small, at the tail first. A belt steers toward the side it touches first. Tiny moves, then let it make full revolutions before moving again.
  5. Check tension. Too loose wanders; too tight eats bearings and splices.
  1. Check the tank first. Low oil and a clogged suction strainer cause more "bad pumps" than bad pumps do.
  2. Feel the case / listen. A whining pump is often aeration or cavitation — air in, or oil can't get in.
  3. Drift test: Run the cylinder out, shut it down, and watch. Drifting under load points to piston seal bypass or a leaking valve spool.
  4. Swap lines to isolate. If the problem follows the cylinder, it's the cylinder. If it stays with the valve position, it's the valve.
  5. Check relief pressure with a gauge against spec before replacing anything expensive.
Safety: Never hunt for a pinhole leak with your hand. Use cardboard — high-pressure injection injuries are life-changing.
  1. Clean the lens and reflector. Dust and overspray kill more sensors than electronics ever will.
  2. Watch the indicator LED while triggering it. No LED change = no power or dead sensor. LED changes but PLC doesn't see it = wiring or input.
  3. Check alignment and mounting. A bracket bumped a quarter-inch will fault all night, then "fix itself" on days.
  4. Wiggle-test the cable at the connector while watching the input — intermittent faults love cracked conductors.
  5. Verify PNP vs. NPN before swapping in the spare. The wrong type will never work, no matter how new it is.
Illustration of a yellow Fluke multimeter reading 123 volts, its red and black test leads plugged into the meter with both probe tips touching the terminals of an open junction box
Meter first, parts cannon last. Most "bad motors" turn out to be bad power, bad loads, or bad connections.
Illustration of maintenance tools, a multimeter, work boots and a study notebook laid out on a steel workbench
The full study pack

One pack. The whole stack.

The sampler above is the warm-up. The pack is the full workout — built to be finished in a week of evenings, even on a night-shift schedule.

What's inside — everything you get
The practice bank
  • ✓120 practice questions — 30 each: Electrical, Mechanical, Fluid Power, and Safety / LOTO & Print Reading
  • ✓Full answer key with plain-English explanations — not just the right letter, but why it's right, so the next question like it is easy
  • ✓Score tracker — log your score by section and watch the weak spots close up as you drill them
Study tools that teach the why
  • ✓4 troubleshooting walkthroughs — step-by-step, in the order a working tech actually checks things
  • ✓Formulas & shop-math cheat sheet — Ohm's law, gear & pulley ratios, pressure and force, torque, and the conversions that show up on every test
  • ✓Print-reading basics with real drawn symbols — the actual electrical and fluid-power symbols, drawn out, not just described in words
Walk in ready
  • ✓15 interview Q&As — the questions plants ask every time, with answers framed the way supervisors want to hear them
  • ✓Test-day checklist — what to bring, what to skip, and how to pace yourself when the clock is running
Bonuses — included free in the $19
  • ✓BonusPrintable lockout / tagout (LOTO) checklist — the full lockout sequence on one sheet you can print, laminate, and keep in your toolbox
  • ✓BonusPrintable preventive-maintenance (PM) inspection checklist template — a ready-to-use inspection sheet you can adapt to the machines in your plant
Add it up: 120 questions + full explained answer key + score tracker + 4 walkthroughs + cheat sheet + print-reading basics + 15 interview Q&As + test-day checklist + 2 printable bonuses. That's the whole stack — for the one $19 price below.

What other test-prep sites charge

JobTestPrep — Ramsay prep bundle$79–$89
Another test-prep site — question bank$67
Wrench Ready — the full pack above$19 one-time

Competitor prices as listed on their sites. Same job on the line: get ready for the test without paying test-company prices.

$29 $19
One-time. Less than an hour's pay at most plant tech rates — for the test that decides the pay.
Get the full pack — $19
Built and checked by a working tech. The free excerpt is taken straight from the pack itself — real questions with their explained answers. The full pack is delivered as a PDF through Gumroad after checkout.
Starter kit

The tools that earn their spot in the box

What a new hire actually needs in the first 90 days — in the order to buy it. No $400 anything until the basics are covered.

A real multimeter

True-RMS, CAT III rated, with a clamp for amps if you can swing it. This is the single most-used diagnostic tool you'll own — buy once, buy right.

First buy: Before your start date

Combination wrench set, metric + SAE

Plants run both, no matter what anyone tells you. A roll pouch beats a bulky case on a crowded floor.

First buy: Week one

Lockout kit — your own locks

Your lock, your key, your life. A personal LOTO kit with hasps and tags is non-negotiable, and good plants will respect you for showing up with one.

First buy: Before you touch a machine

Good light + inspection mirror

Half of troubleshooting is seeing. A rechargeable headlamp and a small flashlight will find the cracked wire and the hairline leak that everyone else walked past.

First buy: Week one — cheap, huge payoff

1/4″ + 3/8″ socket sets & hex keys

Deep and standard, 6-point where you can. Add ball-end hex keys — panel work is full of awkward angles by design, apparently.

First buy: First month

A beat-up notebook

Write down every weird fault and its fix. In six months that notebook is worth more than any single tool in the box — it's your personal troubleshooting database.

First buy: Day one. Seriously.
After the test

Interview questions, answered like a tech

Supervisors aren't looking for genius. They're looking for safe, methodical, and honest.

A motor keeps tripping. Walk me through your process.

Start with safety and information: LOTO, then ask what changed. Check the load mechanically before condemning the motor, verify power quality, then test the motor itself. The answer they want is an order, not a guess.

Tell me about a repair that went wrong.

Own a real one, briefly. What happened, what it cost, and the specific thing you do differently now. Everybody has one — pretending you don't is the red flag.

How do you handle a repair you've never done before?

Manual and print first, lockout, take photos before disassembly, lay parts out in order, and escalate before you're over your head — not after. Plants lose more money to pride than to inexperience.

Why maintenance, and why nights/weekends?

Be straight. If 3rd shift fits your life, say so — schedulers have been burned by people who swear they're fine with nights and quit in month two. Honesty here is a competitive advantage.

Who's behind this

Jeremy Mills — New Market, Alabama

I'm a maintenance tech on 3rd shift at a plastics plant in north Alabama, with a millwright background and 5+ years keeping production lines running — motors, conveyors, hydraulics, and the 2 a.m. breakdowns nobody else wants.

I started Wrench Ready because when I was trying to get hired, everything I found was written by test companies and HR blogs. Nobody on the floor was making it. Every question, guide, and cheat sheet here gets checked against how the work actually goes — meter first, parts cannon last.

If you're studying at midnight before a test tomorrow: I've been exactly there. Start with the free sampler above, fix the gaps it shows you, and go in calm.

— Jeremy Mills
Where this site goes next

First version live. Here's the build order.

STEP 01 — NOW

This homepage

The free sampler, the guides, and the pack offer — the core of the site, working end to end so it can be judged for real.

STEP 02 — DONE

Full question bank + checkout

All 120+ questions are published, the interactive practice test is live, and checkout runs through Gumroad for the $19 pack — all at getwrenchready.com.

STEP 03 — GROWTH

More guides, steady traffic

One new troubleshooting guide a week from real jobs. As traffic grows: tool recommendation pages and ads become the second and third income streams.