305 CR Mini Hydraulic Excavator Hydraulic System Machine Drift on a Slope - Check Caterpillar


Machine Drift on a Slope - Check
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Measuring the amount of drift of the machine on a slope will determine if there is a need to check the travel brake.

Note: The engine speed and/or the machine configuration that is used during this test can affect the results of this test. Refer to Testing and Adjusting, "Engine Performance - Test" for the engine speed that was used for this test. Refer to Testing and Adjusting, "Operational Checks" for the machine configurations that were used for this test.

Note: The relief valve pressure settings must be set to the relief valve pressure specification before performing this operational check. Refer to Testing and Adjusting, "Specifications".

Table 1
Required Tools    
Part Number     Description     Qty    
    Stopwatch     1    
    Scale
150 mm (6 inch)    
1    



Illustration 1g00816348

(A) 12°

  1. Place the machine on a slope of 12 degrees. The surface of the slope must be hard and smooth.

  1. Position the implements, as shown. Refer to Illustration 1.

  1. The bucket should be empty.

  1. Fully extend the stick cylinder and the bucket cylinder.

  1. Position the boom so that the height of the bucket control linkage pin is 800 mm (31 inch) from the ground.

  1. Raise the blade.

  1. To indicate the machine's relative position to the slope, put a mark on both the track and the ground.

  1. Stop the engine.

  1. Measure the machine movement on the slope after three minutes. The maximum drift for a new machine is 35 mm (1.4 inch).

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