ALTERNATOR GROUP DELCO-REMY 3G1888 - Caterpillar

Personal injury or death can result from sudden machine movement.Sudden movement of the machine can cause injury to persons on or near the machine.To prevent injury or death, make sure that the area around the machine is clear of personnel and obstructions before operating the machine.
The torque converter stall test helps determine if the engine is producing the correct power output. The torque converter stall test provides an engine speed for comparison with the engine speed from the double stall test. This stall test is used in many diagnostic procedures.The service brakes must be applied when the tests are performed. Make sure that the service brakes and the parking brake are fully operational before you perform any tests.Make sure that the transmission oil is at the normal operating temperature of 74° to 85°C (165° to 185°F) when any tests are performed.
Park the machine on a smooth, level surface.Reference: For more information about preparing the machine for troubleshooting, refer to the Service Manual module Testing and Adjusting, "Machine Preparation for Troubleshooting".
Turn the engine start switch to the OFF position.
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Location of the Solenoid Valve (Hydraulic Fan System) (1) Connector for the solenoid valve.
Set the hydraulic fan to the maximum rpm. In order to run the hydraulic fan system at the maximum rpm, the connection to the solenoid valve for the hydraulic fan system must be disconnected.Note: The solenoid valve is located on the right side of the engine and below the hydraulic fan pump. Turn the engine start switch to the OFF position. Disconnect the wire harness from connector (1) on the solenoid valve (hydraulic fan).
Shift the transmission to the NEUTRAL position. Start the engine. Engage the parking brake.
Warm the transmission oil to normal operating temperature of approximately 74° to 85°C (165° to 185°F).
Ensure that the work tool is positioned on the ground.
Reduce the engine speed to low idle. Shift the transmission direction and speed control to the NEUTRAL position.
Fully depress the right side service brake pedal. Place the transmission direction and speed control to the SECOND SPEED FORWARD position or in the SECOND SPEED REVERSE position. Hold the right service brake pedal in the depressed position for the duration of the test. Ensure that the parking brake is applied.Note: Do not use the left brake pedal as a service brake.
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Instrument Panel
To ensure that the transmission oil does not overheat, do not keep the torque converter in a full stall condition for more than 30 seconds. After the torque converter stall test, reduce the engine speed to low idle. In order to cool the oil, move the transmission control to the NEUTRAL position and run the engine between 1200 rpm and 1500 rpm.
Slowly, depress the governor control pedal until the engine speed is at high idle. Allow the engine rpm to stabilize. Observe the tachometer and record the torque converter stall speed. The correct stall speed for the 824H, the 825H and the 826H is 1950 50 rpm.Note: The results of the torque converter stall test must