Transmission and Hydraulic Component Test Stand

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A versatile test-stand designed for testing heavy-duty off-highway hydraulic components, the AIDCO Model 900C Hydraulic Test Center features some of the most advanced technology on the market today. Designed for complete pump, motor, and hydrostatic transmission/hydraulic testing, and designed to align with Caterpillar testing procedures, the Model 900C is much more than a standard transmission and hydraulic test bench.
The Model 900C provides a durable and reliable platform for performance testing transmissions, torque converters, gear pumps, vane pumps, hydrostatic pumps, hydraulic motors, cylinders, and valves. Performance testing leads to reduced operating costs due to rebuild errors and the possibility of critical failures in the field. Equipment dealers can realize more profitable maintenance contracts and increased customer satisfaction by utilizing performance testing. Additionally, the Model 900C features an independent closed loop hydrostatic drive for a contamination-free drive system and industrial grade glycerin filled pressure gauges.
Capable of detecting shift points and mechanical binding, identifying vibrations, diagnosing and locating leaks, measuring pressure and flow, clutch leakage and output torque (optional), the AIDCO Model 900C Hydraulic Test Center is one of the most comprehensive hydraulic testing tools on the market.



  • On-site Training and Commissioning
  • Independent closed loop hydrostatic drive eliminates contamination risk
  • Power Lift Assembly
  • PowerNet TD Data Acquisition and Control
  • Automated shutdown protocols with computer controlled pressure reliefs
  • Safety set points remain active in both auto and manual operation modes
  • Enables remote operation and optimizes employee safety
  • Polycarbonate Sliding Safety Shield – Used to protect the operator from fluid splash and small projectiles
  • Multi-location ladder for convenient machine-top access and maximum safety
  • Rear door access and ample interior lighting for added visibility and safety during maintenance

900C-FA (Fully Automated)

  • Fully automated functionality ensures consistent and repeatable results, and saves time with each component test
  • Mounted Flat Panel Monitors allow for monitoring of PowerNet 3.0, including test patterns and key parameters
Parameters Measured

Tranmissions and Torque Converters

  • Check and set shift points (automatic)
  • Full and closed throttle upshift and downshift test (loaded or unloaded)
  • Downshift inhibitor test
  • Measure output torque
  • Locate shaft seal leaks
  • Identify clutch leakage
  • Check noise/vibration
  • Detect mechanical binding
  • Check main, clutch, lube and converter pressure
  • Monitor converter flow and temperature

Hydraulic Components

  • Flow & pressure
  • Torque requirements
  • Case leakage
  • Noise & vibration
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Product Specifications

Electric  Electric Motor Selections (other voltage options available on request) Test centers utilize a wye-delta starting method to reduced motor startup voltage. A soft-start option is also available. NOTE: Main Power Disconnect (provided by others) must use time-delay slow-blow fuses or a breaker with an adjustable over-current setting. 900C-300 300HP (223 kW) 460V/60 Hz – 500 Amps
250HP (187 kW) 380V/50 Hz – 500 Amps
900C-400 400HP (298 kW) 460V/60 Hz – 600 Amps
330HP (246 kW) 380V/50 Hz – 600 Amps
900C-450 450HP (335 kW) 460V/60 Hz – 700 Amps
370HP (276 kW) 380V/50 Hz – 700 Amps


Hydrostatic Drive System Direction CCW & CW
Max Speed 3,200 RPM
Max Torque 1,232 Lb-ft (1,670 N-m)
Max Torque Speed Range 900C-300 0-1,270 RPM
900C-400 / 900C-450 0-1,760 RPM
Max Pressure 6,090 PSI (41,989 kPa)
Pump Displacement 900C-300 180cc
900C-400 / 900C-450 250cc
Motor Displacement 250cc