Model #MF300-VCLS-TS

Hydrostatic Transmission with Hydraulic Steering

The Hydrostatic Transmission with Hydraulic Steering trainer is a “lean, mean troubleshooting teaching machine.”Almost every hydraulic component can “fail” at the flick of a switch for your students to master hydraulics troubleshooting skills.

The MF300 is an extremely versatile 2-in-1 training system designed for teaching and learning hydraulic steering and hydrostatic transmissions.

This is a great option for people who need to teach the basic concepts behind hydrostatic transmission and steering systems, but are short on funds and/or space. You can fault everything in the steering system, but only the pump can be faulted on the transmission end of the trainer.

Pricing upon request

Product Documents

Hydraulic Steering & Hydrostatic Transmission with Troubleshooting


The MF300-VCLS-TS model trainers were designed to help schools and colleges safely and effectively troubleshooting industrial and mobile hydraulic systems.

Educational Advantages

  • Designed to have students understanding every component found in a typical articulated vehicle’s steering, including dual steering cylinders
  • Designed to have students learning the hydrostatic transmission or closed-loop system
  • Designed to help schools and colleges overcome the critical shortage of highly-skilled hydraulic diagnostic technicians
  • Will aid an instructor in teaching students how to troubleshoot the following hydraulic steering system components:
    ○ Fixed displacement pump
    ○ Steering orbitrol valves
    ○ Priority flow dividers
    ○ Steering system’s main pressure relief valves
    ○ Dual cross-port relief valves
    ○ Single and dual steering cylinders
  • Will aid an instructor in teaching students how to troubleshoot the following hydrostatic transmission system components:
    ○ Transmission doesn’t operate in either direction – forward or reverse
    ○ Neutral is difficult or impossible to find
    ○ Transmission is overheating and lacks power
    ○ Transmission is sluggish


Educational Advantages

Hydraulic Steering System:

  • How a priority flow divider functions (bypass-type, pressure-compensated flow control)
  • How a steering orbitrol valve functions
  • How a steering system’s main pressure relief valve functions
  • How to set the steering system’s main pressure relief valve
  • How a dual cross-port relief valve functions
  • How to set dual cross port relief valves
  • How steering cylinders function
  • How to interpret symbols for the components in a typical hydraulic steering system
  • How to read the schematic for a typical hydraulic steering system
  • How to properly construct a typical steering system and make all the necessary pressure settings
  • How a steering pump with integral pressure relief and priority flow control functions
  • How dual, single-rod, double-acting steering cylinders function
  • Learn safety features including: safety pressure relief valve; breakaway rear wheels; breakaway steering

Hydrostatic Transmission System:

  • Understand advantages and disadvantages of hydrostatic drives
  • Learn typical applications for hydrostatic drives – industrial and mobile
  • How to interpret the hydraulic symbols for components in a typical hydrostatic transmission
  • How to read the hydraulic schematic for a typical hydrostatic transmission
  • Learn safety practices for operating, servicing, repairing, maintaining and troubleshooting hydrostatic transmissions
  • How a variable displacement, over-center pump works
  • Understand how work pump displacement controllers – manual, manual over hydraulic, and electronic over hydraulic
  • Learn proper external drain pump and motor pre-start-up and post start-up procedures
  • Learn the function and purpose of a charge pump
  • Learn the function and purpose of a charge pressure relief valve
  • How to properly set a charge pressure relief valve
  • Learn the function and purpose of the dual charge check valves
  • How to operate a typical hydrostatic transmission for:
    • System start-up
    • Charge circuit – neutral
    • Charge circuit – forward and reverse
    • Forward operation
    • Reverse operation
    • Low pressure loop operation
    • Dynamic braking
    • Case drain circuit
    • Cooling and filtering circuit
    • High-pressure relief valve operation
  • Learn proper and safe towing procedures for vehicles equipped with hydrostatic wheel drive systems.
  • Understand the advantages and disadvantages of dual, parallel motors.
  • Understand the advantages and disadvantages of dual, series motors.
  • How the “dynamic braking” in a hydrostatic drive functions.
  • How to construct a dual-parallel drive circuit.
  • How to construct a dual-series drive circuit.
  • Learn common pitfalls which lead to start-up failures on hydrostatic transmissions.
  • Learn common pitfalls which lead to premature failure of hydrostatic transmissions
  • How to troubleshoot the following hydrostatic transmission system components:
    ○ Transmission doesn’t operate in either direction – forward or reverse
    ○ Neutral is difficult or impossible to find
    ○ Transmission is overheating and lacks power
    ○ Transmission is sluggish


List of Components Included

Hydraulic Steering System:

  • Self-contained, fixed-displacement pump with 1HP, single-phase motor
  • Orbitol steering valve – open-center
  • Control console with steering wheel
  • Main Pressure relief valve
  • Priority flow divider
  • Dual, single-rod, double-acting steering cylinders
  • Dual, cross-port relief valves with mono-block body
  • Safety relief valve
  • 0-1000 PSI (0-69 bar) pressure gauge
  • Digital temperature gauge
  • *Spin on/off filter with by-pass indicator
  • *Transparent reservoir with isolator mountings
  • All-steel frame with powder-coat finish
  • Four (4) wheel casters with brakes

Hydrostatic Transmission System:

  • 1.5 HP electric motor: 115V single-phase, C-frame, 1750 RPM
  • Variable-displacement, over-center, axial-piston pump with manual operator
  • Cut-away of identical pump, which operates in tandem with the drive pump (allows students to study how an over-center pump works while it is operating)
  • Dual, fixed-displacement, bi-directional, gerotor-type hydraulic motors
  • Control console with manual pump displacement control lever
  • Panel-mounted 0-100 PSI (0-6.9 bar) charge pressure gauge
  • Dual, in-line, bi-directional flow meters
  • *Spin on/off filter with by-pass indicator
  • *Digital temperature gauge
  • *Transparent reservoir with isolator mountings
  • Rear wheels are designed to move independently of axles to prevent safety hazards.


* Common to both systems

Learning Topics

  • Ag Mechanics
  • Diesel and Heavy Truck

Grade/Skill Level

Designed for:

  • High School
  • Industry
  • K-8
  • Technical College
  • University

Additional information



Automotive I Diesel I Hands-On Training I OEM Components I Hydraulic Steering System I Hydrostatic Transmission System Components Training I Hydrostatic Transmission System Training I


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