TOOTH GP-SCARIFIER 4K3330 - Caterpillar

The steps below correspond with the steps in Chart E. "Pump Test Specifications". Bring the test bench oil up to the temperature specified in Chart B. 1. Start rotating pump at 600 rpm. Running the pump for five minutes will break in a rebuilt pump, and assure proper configuration of hose connections.2. Increase the Input Speed and Discharge Pressure to the values in Chart E. Compare the actual Discharge Flow value with the value in the chart. If the actual flow rate is less than the value listed, something may be mechanically wrong and further pump inspection is required.3. This step checks the pump for internal leakage. Case drain leakage is an indication of the pump's efficiency. Set pump parameters as listed in the chart, then adjust the Discharge Pressure accordingly.4. This step also checks the pump for internal leakage. Again, case drain leakage is an indication of the pump's efficiency. Set pump parameters as listed in the chart, then adjust the Discharge Pressure accordingly. 5. When the Discharge Pressure listed in the chart is reached in this step, the Discharge Flow should have decreased to the value listed. If not, adjust the high pressure cut-off screw on the pump until the required discharge flow is obtained.
Figure 2. Test Bench Connections(1) Inlet to pump.(2) Case drain connections.
Figure 3. Test Bench Connections(1) Discharge flow control.(2) From pump outlet.(3) To tank.(4) Tank connection.
Figure 4. Test Bench Controls and Gauges(1) Discharge pressure.(2) Signal pressure.(3) Discharge flow.(4) Margin pressure.(5) Pump discharge pressure load control.