Description
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
