320D2 GC Excavator Hydraulic System Engine Performance - Test

Engine Performance - Test - Engine Speed

320D2 GC Excavator Hydraulic System [UENR6215]

320D2 GC Excavator Hydraulic System Main Pump (Flow) - Test - Hydraulic Power

BASIC ENGINE

320D2 GC Excavator Hydraulic System Engine Performance - Test - Engine Speed

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Table 1
Required Tools
Part Number	Description	Qty
9U-7400	Multitach Tool Group	1

Position the machine on level ground.
Stop the engine.
Install 9U-7400 Multitach Tool Group on the engine.
Start the engine.
Increase the hydraulic oil temperature to 55° ± 5°C (131° ± 9°F).
Read the engine speed display (rpm) on the multitach. Refer to Table 2 for the specifications for engine speed at the desired engine operation.

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Table 2
Item	Specifications
Item	New	Service Limit
No load high idle⁽¹⁾	1970 ± 50 rpm⁽²⁾	1770 to 2020 rpm⁽²⁾
No load high idle⁽¹⁾	1870 ± 50 rpm⁽³⁾	1670 to 1920 rpm⁽³⁾
No load speed⁽⁴⁾	1050 ± 50 rpm	950 to 1150 rpm
No load low idle	1100 ± 50 rpm	1000 to 1200 rpm
Maximum speed with load⁽⁵⁾	1820 ± 50 rpm	1720 rpm

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⁽¹⁾	AEC switch in the OFF position
⁽²⁾	Engine rpm within 5seconds after the engine speed dial was placed at position "10"
⁽³⁾	Five seconds after the engine speed dial was placed at position "10"
⁽⁴⁾	AEC switch in the ON position
⁽⁵⁾	Pressure is relieved from both pumps (stall condition).

Note: A New specification is the performance that can be expected for a new machine. Performance beyond the Service Limit is an indication of these problems: improper maintenance or adjustment, component wear, and failure.