SENSOR AS 3840202 - Caterpillar

Personal injury or death can result from escaping fluid under pressure.Escaping fluid under pressure, even a very small pin-hole size leak, can penetrate body tissue, causing serious injury, and possible death.Always use a board or cardboard when checking for a leak.Do not check for pin hole leaks in pump or motor hoses during a steer stall condition. If fluid is injected into your skin, it must be treated by a doctor familiar with this type of injury immediately.
Personal injury or death can result from sudden machine movement.Sudden movement of the machine or release of oil under pressure can cause injury to persons on or near the machine.To help prevent possible injury, perform the procedure that follows before testing and adjusting the hydraulic and steering system:
The torque converter stall test helps determine if the engine is producing the correct power output. This stall test is used in many diagnostic procedures.
Move the machine to a hard, level surface that is free of debris.
Permit only one operator on the machine. Keep all other personnel away from the machine.
Press the "OK" button on the keypad repeatedly. The hour meter will appear on the diagnostic screen.
On the "VIMS" keypad, enter "SERV (7378)" and then press "OK". Press the ">" key until "DBL STL RAISE SD - CHK" is displayed on the bottom line of the diagnostic message screen. Then press the "OK" button.
Table 1
"SELECT CALIBRATION"
"DBL STL RAISE SD - CHK"
The "DBL STL RAISE SD- CHK" message will be displayed on the diagnostic message screen. Press "OK" in order to start the calibration. All the instructions for the service mode will be displayed on the diagnostic message screen.
Table 2
"DBL STL RAISE SD - CHK"
"PRESS [OK] TO START"
Engage the hydraulic lockout switch.
Release the steering and transmission lock.
Table 3
"STRG/TRN LOCK"
"MUST BE RELEASED"
Warm the transmission to a temperature of 50 °C (122 °F). Press the "NEXT" button if the transmission oil temperature is already to temperature.
Table 4
"WARM TRANS OIL >=50C"
"XX C, [OK] TO SKIP"
Place the transmission in the "NEUTRAL" position.
Engage the brake for parking.
Warm the hydraulic oil to a temperature of 50 °C (122 °F). Press the "OK" button if the hydraulic oil temperature is already to temperature.
Table 5
"WARM HYD OIL TO"
"(50-55) XX DEG C"
Slowly raise the linkage to the maximum height. Then press the "OK" button.
Table 6
"RAISE THE BOOM FULLY"
"THEN PRESS [OK]"
Slowly place the bucket in the full rackback position. Then press the "OK" button.
Table 7
"TILT BKT BACK FULLY"
"THEN PRESS [OK]"
Fully depress the pedal for the brake. Then press the "OK" button. Hold the pedal in this position for the remainder of the test.
Table 8
"PRESS/HOLD SERV BRK"
"THEN PRESS [OK]"
Shift the transmission into third gear forward.
Table 9
"SHIFT TRANSMISSION"
"TO 3F"
Slowly increase engine speed to high idle.
Table 10
"SLOWLY INCREASE ENG"
"SPD TO MAX AND HOLD"
Move the lift lever to the full raised position and hold.
Table 11
"PULL AND HLD LFT LVR"
"AT FULL RAISE"
Allow the engine speed to stabilize. Verify double stall speed. The double stall speed should be 1550 50.
Table 12
"ENG SPD = XXXX RPM"
"SPEC VAL = 1550 RPM"
Shift the