Manufacturer: Woodward Governor Co.
Description/Function of unit
The test stand and accessory equipment have been designed to test most models of governors manufactured by Woodward Governors Company, and has the capability of testing governors manufactured by others.
The stand is driven by a reversible air motor. The speed of the stand is controlled by closed loop operation between the governor and the stand that is the governor controls the position of the air control valve which controls the air supply to the air motor. The air motor requires an air capacity of approximately 56 cubic feet per minute at a pressure of approximately 125 PSI to dive a governor at approximately 1500 RPM. The air motor can be adjusted up or down to accommodate different lengths of governor drive shafts.
The test stand incorporates a drop feed, oil mist lubricator to lubricate the air motor and to permit maintenance free operation.
Electrical power is required on the models with the instrumentation panel. The power requirement to each stand may vary to meet the needs of a particular installation. Normal power requirements are 230VAC, 3 phase, 50-60 cycles. The rail type stand has a DC power supply built into the control panel to provide power for checking solenoids and switches within the governor.
A heated oil system is provided in the rail and non-rail type stand to supply oil to the governors under test. The heaters mounted in the oil system sump are immersion type and thermostatically controlled. Temperature of the oil system is normally set to approximately 210ºF. The system uses SAE 30 non detergent lubricating oil at a preset pressure of approximately 75 PSI.
A vacuum system is provided in the rail type stand for testing the engine lubricating oil vacuum shut down device incorporated in some governors.
Rail Type: All governors listed for non-rail type plus locomotive speed setting governors
Non Rail Type: SG, PSG, UG8, UG8PL, UG32, UG40, **PGA, PGD, PGL, PGPH, PGPL, PGTR, SI, *LSG10, EG3C, *EG3P, *EGB10, EGB2C, *EGB10C, EGB35C, EGB50C,*EGB2P, *EGB10P
Basic: UG8, UG32, UG40, PGD, PGL, SI, *LSG10, 8EGB10, WO
Air Supply Required
Rail Type: 56 CFM @ 125 PSI
Non Rail Type: 56 CFM @ 125 PSI
Basic: 56 CFM @ 125 PSI
Electrical Power Requirements
Rail Type: 230 VAC, 3 PH, 50/60 cycle with external ground
Non Rail Type: 230 VAC, 3 PH, 50/60 cycle with external ground
Oil Supply Type
Rail Type: 30 SAE
Non Rail Type: 30 SAE
Rail Type: 75 PSI
Non Rail Type: 75 PSI
Controlled Temperature Output
Rail Type: 210ºF
Non Rail Type: 210ºF
Rail Type: 9 gallon
Non Rail Type: 9 gallon
Rail Type: 50 micron
Non Rail Type: 50 micron
Air motor Lubrication
Rail Type: Drop feed auto. Lubricator and gear box fittings
Non Rail Type: Drop feed auto. Lubricator and gear box fittings
Basic: Drop feed auto. Lubricator and gear box fittings
Rail Type: 150-200 SU
Non Rail Type: 150-200 SU
Basic: 150-200 SU
Rail Type: 3-5 drops/min
Non Rail Type: 3-5 drops/min
Basic: 3-5 drops/min
Air Motor Rotation
Rail Type: CW or CCW governor control
Non Rail Type: CW or CCW governor control
Basic: CW or CCW governor control
Rail Type: Installed