ROPS GP 1846455 - Caterpillar

Machine Preparation
Move the machine to a smooth horizontal location. Move away from working machines and personnel. Lower the work tools to the ground.
Allow only one operator on the machine. Keep all personnel away from the machine or in the view of the operator.
Engage the parking brake.Performance Test
Stall Test
The torque converter stall test is designed to test the engine, the torque converter, the drive train and the brake system as a unit. The torque converter output is stalled while the engine is operated at high idle. The speed of the engine at torque converter stall indicates whether the engine and the transmission are operating correctly under full load.If the engine speed is lower than the normal given speed or if the engine speed is higher than the normal given speed, this indicates that there is a problem in the engine or in the transmission. If testing shows correct engine performance but the torque converter stall speed is not correct, the problem is in the torque converter or in the transmission.Reference: To check the performance of the Caterpillar 3176C Engine, refer to the following service literature: Specifications, SENR9527, "3176C and 3196 Engine For Caterpillar Built Machines" and Systems Operation, Testing and Adjusting, SENR9528, "3176C and 3196 Engine For Caterpillar Built Machines".Perform the torque converter stall test.Reference: For information on performing the torque converter stall test, refer to the Service Manual module Testing and Adjusting, "Torque Converter Stall and Implement Pump Double Stall - Test" for the machine that is being serviced.Low stall speeds indicate a possible problem with engine performance. The stall speed should be corrected before the performance of the implement pump can be properly tested.Check Calibration of Main Control Valve
Perform the calibration of the main control valve in order to ensure that the solenoid valves are functioning properly.For more information about performing the calibration, refer to the Service Manual module Testing and Adjusting, "Main Control Valve (Electronic Technican) - Calibrate" or Testing and Adjusting, "Main Control Valve (Caterpillar Monitoring System) - Calibrate" for the machine that is being serviced.Implement Cycle Time
The cycle times of the implements is affected by the amount of oil flow that is produced by the implement pump. Check the implement cycle times in order to determine if there is a problem with the implement pump.
Perform the machine preparation for testing.
Warm the hydraulic oil to normal operating temperature.
Illustration 1 g00892595
Disengage the hydraulic lockout. The switch is located on the right side of the armrest. Press the small red button that is located at the rear of the switch. Press the rear of the switch in order to unlock the hydraulic system controls.
Begin the test for the lift cycle time with the work tool flat on the ground.
Enter the Implement Hydraulic Service Mode.Reference: For additional information about this mode, refer to the Troubleshooting Testing and Adjusting, "Implement Hydraulic Service Mode" for the machine that is being serviced.
Increase the engine speed to high idle.
Pull the lift control lever back to the full RAISE position. Measure the lift cycle