349F and 352F Excavators Hydraulic System Travel on Level Ground - Test

Table 1
"Travel on Level Ground - Test (Optional Test)"
Time For Three Revolutions (time in seconds)
Undercarriage	Travel Speed		New	Service Limit	Actual
Standard	HIGH	Forward	25.6 or less	33.3 or less
	HIGH	Reverse	25.6 or less	33.3 or less
	LOW	Forward	32.3 or less	42.0 or less
	LOW	Reverse	32.3 or less	42.0 or less
Long	HIGH	Forward	27.0 or less	35.1 or less
	HIGH	Reverse	27.0 or less	35.1 or less
	LOW	Forward	34.3 or less	44.6 or less
	LOW	Reverse	34.3 or less	44.6 or less

Introduction

When the procedure for the Travel on Level Ground cannot be performed, this test may be used as a substitute.

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. 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".

Required Tools

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Table 2
Required Tools
Description	Qty
Stopwatch	1

Test Procedure

Start the engine.
Position the machine on level ground.
Place the hydraulic activation control lever in the UNLOCKED position.
Increase the hydraulic oil temperature to 55° ± 5°C (131° ± 9°F).
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Illustration 1 g00297292
Raise a track off the ground. Refer to Illustration 1.
Put a mark on a shoe of the raised track.
Place the machine controls at the following settings: Engine speed dial "10" and AEC switch OFF.
Place the travel speed control switch in HIGH position.
Move the travel lever of the raised track to full travel position.
Measure the time that is required for the raised track to make three complete revolutions. Measure the time that is required in each direction.
Note: The difference in times between forward and reverse should not exceed 0.5 seconds for HIGH travel speed and 1.0 seconds for LOW travel speed.
Place the travel speed control switch in the LOW position and repeat Steps 9 through 10.