320 Variable Gauge OEM Undercarriage Hydraulic System Caterpillar

Note: The engine speed and/or the machine configuration that is used during this test can affect the results of 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
5P-3277	Measuring Tape	1
	Stopwatch	1

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Illustration 1	g01287716
(A) Preliminary run 5 m (16.4 ft) (B) Travel distance 20 m (65.6 ft)

1. Travel distance must be at least 25 m (82 ft) long. Travel test ground must be hard and as level as possible.

2. Draw a 25 m (82 ft) straight line on travel test ground as a reference line.

3. Start the engine.

4. Place the machine controls at the following settings: Engine speed dial "10" and AEC switch OFF.

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

6. Position the machine so that one track is parallel with the reference line. Position the machine for the travel test. Refer to Illustration 1.

7. Move the machine by operating both travel levers at the same time.

8. The first 5 m (16.4 ft) are for a preliminary run. Measure the travel time that is required to travel the remaining 20 m (65.6 ft). Measure the time that is required in each direction.

Table 2

Travel Time (time in seconds)
Forward	36.4
Reverse