PANEL GP-CIRCUIT BREAKER 2311659 - Caterpillar

Test Procedure
Note: The steps in the procedure correlate with the steps under the test specifications according to your specific part number.The contamination level of the hydraulic oil in the test bench should be ISO 16/13 or better. The oil in the test bench should be one of the following.
SAE 10W at 50 °C (122 °F) or
Mobil DTE-11 at 46 °C (115 °F)
Illustration 10 g01378800
Pump Characteristics
(F) Discharge Flow
(P) Discharge Pressure
Before rotating the pump, be sure that the Adjustment screw for the pressure relief valve (62) is completely opened (turned completely counter-clockwise). Start rotating the pump according to the RPM in Step 1 of the"Test Procedure". Adjust 231-1286 Pressure Relief Valve (61) to the charge pressure in Step 1 of the Test Specifications by turning the Adjustment screw for the pressure relief valve (62), if necessary. Listen for abnormal noise and verify flow from the pump. Be sure that all connections are secure and not leaking. Check for leaking shaft seals and control valve connections.
Slowly increase the input RPM to the value in Step 2 of the Test Specifications. Adjust 231-1286 Pressure Relief Valve (61) to the charge pressure in Step 2 of the Test Specifications, if necessary. The pump may not be feasible if the actual flow is less than the value in Step 2 of the Test Specifications. The pump should be disassembled and inspected.
Increase the pump discharge pressure to the value in Step 3 of the Test Specifications. Adjust 231-1286 Pressure Relief Valve (61) to the charge pressure in Step 3 of the Test Specifications, if necessary. Compare the actual case drain value with the case drain value in Step 3 of the Test Specifications. This value is an indication of the pump efficiency. The pump may not be feasible if the case drain is more than the value in Step 3 of the Test Specifications. The pump should be disassembled and inspected.Note: There will be a substantial amount of residual oil exiting 5P-2974 Connector (59), especially when the high-pressure cut is reached during Step 4 of the Test Procedure. Direct oil accordingly with hose secured.
Increase the pump discharge pressure to the value in Step 4 of the Test Specifications. Adjust 231-1286 Pressure Relief Valve (61) to the charge pressure in Step 4 of the Test Specifications, if necessary. Turn the adjustment screw for the high pressure cut (49) until the actual high-pressure cut value is equal to the value in Step 4 of the Test Specifications. Pump discharge flow should be zero when the high-pressure cut is reached.
Hot oil and hot components can cause personal injury. Do not allow hot oil or hot components to contact skin.
Reduce RPM and all pressures to zero. Remove the component from the test bench. Drain the oil from the pump. Cap and plug all ports.Test Specifications
Table 3
Part Number Pump Rotation Step Input Speed Discharge Pressure kPa (psi) Discharge Flow lpm (gpm) Charge Pressure
( 231-1286 Pressure Relief Valve setting)
kPa (psi) Max. Case Drain Flow lpm (gpm)
339-0926 CCW 1 500 0 22 (5.8)