302.5C Mini Hydraulic Excavator 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. Refer to Testing and Adjusting, "Engine Performance - Test (Engine Speed)" for the engine speed that was 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
Description	Qty
Tape Measure	1
Stopwatch	1

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Illustration 1	g00816299
(A) Preliminary run 10 m (32.8 ft) (B) Travel distance 20 m (65.6 ft)

1. Travel distance must be at least 30 m (98.4 ft) long. Travel test ground must be hard and as level as possible.

2. Draw a 30 m (98.4 ft) straight line on travel test ground as a reference line.

3. Start the engine.

4. Place the engine speed dial in the HIGH IDLE position.

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

6. The bucket should be empty.

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

8. Place the travel speed control switch on the HIGH position.

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

10. The first 10 m (32.8 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.

11. Measure the travel deviation from the reference line.

12. Place the travel speed control switch on the LOW position and repeat Steps 9 through 11.

Table 2

Travel Time
Travel Speed		Specification
HIGH	Forward	17.5 ± 2.5 sec
	Reverse
LOW	Forward	26.0 ± 1.5 sec
	Reverse

Note: The following table represents the travel deviation (distance) from the reference line.

Table 3

Travel Deviation
Travel Speed		Specification
HIGH	Forward	1500 mm (59 inch) or less
	Reverse
LOW	Forward	1500 mm (59 inch) or less
	Reverse