320D RR Excavator and 320D RR Forest Machine Hydraulic System Caterpillar

Travel on Level Ground - Test - Optional Test

Usage:

Note: 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".

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Table 1
Required Tools
Description	Qty
Stopwatch	1

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Illustration 1	g00297292

Start the engine.

Position the machine on level ground.

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

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.

Place the travel speed control switch in the LOW position and repeat Steps 8 through 9.

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Table 2
320D RR Time For Three Revolutions (time in seconds)
Travel Speed		New	Rebuild	Service Limit
HIGH	Forward	17.0 or less	18.0 or less	19.0 or less
HIGH	Reverse	17.0 or less	18.0 or less	19.0 or less
LOW	Forward	27.5 or less	28.5 or less	30.5 or less
LOW	Reverse	27.5 or less	28.5 or less	30.5 or less

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Table 3
320D LRR Time For Three Revolutions (time in seconds)
Travel Speed		New	Rebuild	Service Limit
HIGH	Forward	18.5 or less	19.6 or less	20.7 or less
HIGH	Reverse	18.5 or less	19.6 or less	20.7 or less
LOW	Forward	30.0 or less	31.0 or less	38.0 or less
LOW	Reverse	30.0 or less	31.0 or less	38.0 or less