314C CR Excavator Hydraulic System Caterpillar

1. Stop the engine.

2. Release the pressure in the hydraulic system. Refer to Testing and Adjusting, "Hydraulic System Pressure - Release".
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   Illustration 1	g00729025
   Sprocket (left track) (1) Sprocket (2) FT-2542 Track block assembly

3. Place track block assembly (2) in sprocket (1) in order to block forward left travel. Refer to Illustration 1.
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   Illustration 2	g00728610
   Travel motor (3) 6V-9508 Face seal plug (4) 6V-8397 O-Ring seal (5) Case drain hose (6) Connector (7) Remote drain hose (8) Container for measuring

4. Disconnect case drain hose (5) from connector (6). Install plug (3) and seal (4) in the open end of case drain hose (5).

5. Connect one end of remote drain hose (7) to connector (6). Place the other end of remote drain hose into the container (8) in order to measure the case drain oil.

6. Start the engine.

7. Place the machine controls at the following settings: engine speed dial "10" and Low idle switch OFF. Refer to Testing and Adjusting, "Engine Performance - Test" for engine rpm settings.

8. Place the hydraulic activation control lever in the UNLOCKED position.

9. Increase the hydraulic oil temperature to 55° ± 5°C (131° ± 9°F).

10. Move the left travel lever forward fully for one minute.

11. Measure the amount of case drain oil.

12. Remove track block assembly (2) from sprocket (1).

13. Move the left travel lever in order to reposition the travel motor.

14. Place track block assembly (2) in sprocket (1) in order to block forward left travel.

15. Repeat Steps 10 through 14 in order to obtain three measurements of case drain oil.

The following values specify the maximum acceptable flow of case drain oil when the main relief valve pressure is set at 36800 ± 1470 kPa (5350 ± 215 psi).

New travel motor ... 20 L/min (5.3 US gpm)

Rebuilt travel motor ... 23 L/min (6.1 US gpm)