993K Wheel Loader Electrohydraulic System Caterpillar


Pump Performance (Implement) (Lift Time) - Test

Usage:

993K Z9K
The performance of the implement pumps can be tested by determining the lift time for each implement pump.

  1. Start the engine. Warm the hydraulic oil to a normal operating temperature of 68° ± 20°C (154° ± 36°F).


    Illustration 1g01445414

  2. Select "Service" from the "Home Menu" on the Advisor display.


    Illustration 2g01445436

  3. Select "Service Modes" from the "Service" menu on the Advisor display.


    Illustration 3g01445450

  4. Select "Implement" from the "Service Modes" menu on the Advisor display.


    Illustration 4g01446827

  5. Select "Lift Time Checks" from the "Implement" menu on the Advisor display.


    Illustration 5g01446829

  6. Select one of the three implement pumps and press the "OK" button.

  7. Follow the instructions on the screen in order to check the performance of the pump.

  8. Repeat the test for each implement pump.

  9. The correct lift times for each pump are shown in Table 1.

    Table 1
    Lift Times 
    Pump  Time 
    Center
    250 cc (15.3 in3) 
    23.8 seconds 
    Right Rear
    250 cc (15.3 in3) 
    23.8 seconds 
    Right Front
    180 cc (11.0 in3) 
    36.9 seconds 

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