- Identity and Scope: What This Credential Actually Is
- Format at a Glance: Written Test and Job Performance
- The 11-Heading Domain Map
- Written Test Facts Domain by Domain
- The Six Practical Stations
- Fees, Registration and Deadlines
- Allowed Materials on Test Day
- Five-Year Cycle and Renewal
- Sequencing Your Review by Domain
- Frequently Asked Questions
- The written test is 75 multiple-choice questions in three hours; the hands-on Job Performance assessment is a separate three-hour event.
- Passing the written test requires 70%; the practical needs 70% overall plus station-specific minimum scores.
- Eleven headings means five written domains plus six practical stations, not eleven written-exam domains.
- Standard base fees total USD 424 for professional members or USD 680 for nonmembers, before training or event charges.
Identity and Scope: What This Credential Actually Is
This cheat sheet covers one credential: the Mobile Hydraulic Mechanic certification (MHM, shown in this site's shorthand as CFPMHM), issued and administered by the International Fluid Power Society (IFPS). It is a mechanic-level credential for people who maintain and repair mobile hydraulic equipment, including hydrostatic transmissions and steering systems. It is not an industrial-plant mechanic exam, and it is not a system-design specialist credential. If you want the background on the name itself, see What Is CFPMHM? and What Does CFPMHM Stand For?.
Keep the mobile-versus-industrial distinction in mind while you study. Mobile machines work under shifting loads, in dirt and weather, with compact packaging and field-repair constraints. The exam outline is written around that reality, so your review should lean toward mobile problems: cylinder holding under load, steering response, hydrostatic drive behavior, hose failures and contamination, rather than generic factory-floor power units.
Format at a Glance: Written Test and Job Performance
The certification has two assessment portions, and candidates routinely confuse them. The table below separates the two.
| Item | Written Test | Job Performance (JP) |
|---|---|---|
| Format | 75 multiple-choice questions | Hands-on practical stations |
| Time | Three hours | Three hours, separate assessment |
| Delivery | Proctored, paper or online | Proctored practical |
| Passing standard | 70% | 70% overall plus station-specific minimums |
| Standard fee (member / nonmember) | USD 229 / USD 395 | USD 195 / USD 285 |
The "Exam" duration you see quoted for this credential refers only to the written test. It excludes the practical, and it excludes any multi-day review course you might attend beforehand. Do not read a three-day prep class as the length of the exam. For a full breakdown of how the pieces fit, see the CFPMHM passing score guide.
The 11-Heading Domain Map
The outline exports eleven headings across both assessment portions. That number is easy to misread. Domains 1 through 5 are the written-test subject headings. Domains 6 through 11 are six separate Job Performance station headings. Nobody sits an eleven-domain written exam.
| # | Heading | Portion |
|---|---|---|
| 1 | Understand hydraulic components and their operation | Written |
| 2 | Understand loads and motion | Written |
| 3 | Maintain and repair hydraulic systems | Written |
| 4 | Troubleshoot hydraulic systems | Written |
| 5 | ElectroHydraulic control systems | Written |
| 6 | Identify Fluid Power Symbols | Practical station |
| 7 | Identify Fasteners and Fittings | Practical station |
| 8 | Use of Multimeter | Practical station |
| 9 | Measure a Cylinder Piston | Practical station |
| 10 | Fluid Conductors | Practical station |
| 11 | Tube Bend and Flare | Practical station |
For a deeper walk through every heading, use the complete guide to all 11 content areas.
Written Test Facts Domain by Domain
Because no official weights are published, spread your review across all five written domains and shore up whichever one produces the most misses on practice questions. Here is what each domain asks you to be able to do, framed for mobile equipment.
Domain 1: Understand hydraulic components and their operation
Component recognition and function: pumps, motors, cylinders, valves, accumulators, filters, reservoirs and conductors.
- Read and interpret component model codes so you can tell what a part is from its nameplate
- Know how pump controls work and what they do to flow and pressure
- Understand pump commissioning: priming, initial start-up and what to check first
- Distinguish valve types by function, including pressure, directional and flow control
Domain 2: Understand loads and motion
The calculation domain. Expect problems about force, torque, flow and speed.
- Cylinder force from pressure and piston area, including the rod-side versus cap-side difference
- Motor torque and speed relationships to pressure and flow
- Mechanical advantage and how load geometry changes the pressure a circuit must develop
- Be comfortable with unit handling, since mobile work mixes US and metric fittings and ratings
Domain 3: Maintain and repair hydraulic systems
Hands-on judgment about keeping systems healthy and fixing them correctly in the field.
- Contamination control: fluid cleanliness, filtration, breather and reservoir practices
- Hose failures: how to recognize causes such as abrasion, kinking, over-bending, heat and pressure spikes
- Safe repair procedure, including stored-energy release before opening any line
- Field repairs that restore function without creating a new failure point
Domain 4: Troubleshoot hydraulic systems
Symptom-to-cause reasoning, the heart of mobile service work.
- Pressure problems: low, high, unstable or absent
- Heat and noise as diagnostic clues
- Cylinder holding failures and drift under load
- Erratic or sluggish operation under load, and how to separate pump, valve and cylinder causes
- Hydrostatic transmission and steering symptoms, since the credential scope names them explicitly
Domain 5: ElectroHydraulic control systems
Where electrical meets fluid power on modern mobile machines.
- Proportional valves and how input signals translate to spool position
- Solenoid operation and common coil or connector faults
- Sensors and feedback signals, including what an out-of-range reading implies
- Basic electrical diagnosis that connects directly to the multimeter practical station
If the calculation questions worry you, the difficulty guide explains where candidates tend to struggle, and the practice test site lets you drill original mobile-equipment problems without relying on live exam content.
The Six Practical Stations
The Job Performance assessment is a hands-on test built from the six station headings (Domains 6 through 11). You must reach 70% overall and meet station-specific minimum scores, so a strong showing at one station will not rescue a collapse at another.
- Identify Fluid Power Symbols: read and name schematic symbols. This is the same skill you need for mobile schematics on the written test.
- Identify Fasteners and Fittings: recognize fitting types, thread forms and sealing methods, and avoid mismatches that leak or fail under pressure.
- Use of Multimeter: take and interpret electrical measurements on solenoid and sensor circuits.
- Measure a Cylinder Piston: use precision measuring tools such as a steel scale, digital caliper and micrometer.
- Fluid Conductors: identify and select hose, tube and pipe correctly.
- Tube Bend and Flare: physically bend and flare tubing to specification.
Fees, Registration and Deadlines
All figures below are IFPS standard USD fees as publicly listed. Your actual total can change with membership, training, and any proctor or event charges.
| Cost Item | Professional Member | Nonmember |
|---|---|---|
| Written test | USD 229 | USD 395 |
| Job Performance | USD 195 | USD 285 |
| Calculated combined base total | USD 424 | USD 680 |
- Membership is optional, but the member rates above are lower on every line.
- The written-test application includes the electronic study manual. A printed copy is a USD 20 add-on at application.
- The standalone printed Mobile Hydraulic Mechanic Study Manual is a different purchase: USD 35 for members, USD 75 for nonmembers.
- A JP pass within the preceding five years can satisfy the practical requirement for another mechanic or technician certification. The Connector and Conductor credential is excluded from this transfer rule.
On timing, register at least 30 days before you plan to test. The fee policy's wording refers to four weeks, so confirm the actual deadline for your specific event rather than relying on either phrase alone. Our certification cost breakdown and exam dates guide go further on budgeting and scheduling.
Allowed Materials on Test Day
For the written test, IFPS permits qualifying bound, copyrighted fluid power references and an IFPS-approved calculator. Several things are excluded: IFPS study manuals, pretests and loose-leaf reference notes. Do not plan to bring your own handwritten cheat sheet into the room; this page is for pre-exam review, not test-day use.
Key Takeaway
Because bound references are allowed, build speed at finding information, not just memorizing it. Practice locating formulas, symbol conventions and fitting data in a bound reference under time pressure, and confirm your calculator is on the approved list well before test day.
Five-Year Cycle and Renewal
Certification lasts five years. To renew a mechanic-level credential, you need 15 Professional Development Points (PDP) earned through qualifying industry experience and/or education, plus an application and the applicable fee. The standard first-certification renewal fee is USD 110 for professional members and USD 280 for nonmembers. Because the nonmember gap is large, it is worth comparing the cost of membership against the savings at every fee point. See the requirements guide for eligibility details.
On the credential's value, compare field-service roles and locations rather than assuming a guaranteed pay premium. The ROI analysis and jobs overview frame this without promising a specific salary outcome.
Sequencing Your Review by Domain
One short plan, tied to this credential's structure. Start with the official IFPS Mobile Hydraulic Mechanic Prep Resources and the study manual, then order your work like this. The shared IHM/MHM training modules count as preparation, not a different exam or a replacement mobile syllabus. For a longer plan, see the full study guide.
Components and symbols
- Domain 1 component functions and model codes
- Domain 6 symbol identification, since symbols underpin everything else
Calculations
- Domain 2 force, torque, flow and mechanical advantage problems
Repair and diagnosis
- Domains 3 and 4: contamination, hose failures, pressure, heat, noise, holding
- Domains 7 and 10: fittings and fluid conductors
Electrical and hands-on
- Domain 5 proportional valves, solenoids and sensors, paired with Domain 8 multimeter practice
- Domains 9 and 11 measuring and tube work, which need physical repetition
Frequently Asked Questions
The written test has 75 multiple-choice questions with a three-hour limit. It can be taken on paper or online under proctoring. The hands-on Job Performance assessment is separate and also runs three hours.
No. The public IFPS sources list the written subject headings and practical stations but do not publish percentage weights. Spread your preparation across all five written domains and adjust based on your practice-test misses.
The written test requires 70%. The practical requires 70% overall plus station-specific minimum scores, so you must perform adequately at every station. More detail is in the passing score guide.
Qualifying bound copyrighted fluid power references and an IFPS-approved calculator are permitted. IFPS study manuals, pretests and loose-leaf reference notes are not allowed.
Not based on public sources. IFPS announced an upgraded MHM certification on May 12, 2021, requiring the revised manual for tests after September 1, 2021. That historical upgrade does not establish a separate 2026 edition, so verify current details with IFPS before registering.
Use this page as a quick-reference anchor, then test yourself on original mobile-equipment problems at the CFPMHM Exam Prep practice test site. Always confirm fees, deadlines and station details against current IFPS instructions before you commit to a testing date.