OPERATIONAL PERFORMANCE TEST / Engine Test Measurement: 1. Measure the items as shown in the table below. 2. When measuring, set the switch and test condi- tion as shown in the table below in response to the engine speed to be measured. Evaluation: Refer to Operational Performance Standard in Group T4-2. Remedy: Refer to Troubleshooting B in Group T5-4. NOTE: ECO stands for the auto engine speed re- duction system by 100 min -1 . Switch Panel: Monitor Unit: Digging Mode T1V1-05-01-007 T1V1-04-03-001 T4-3-2 Item Engine Control Dial Power Mode Switch Auto-Idle Switch Work Mode Test Conditions Slow Idle Min. Speed P OFF Digging Mode Fast Idle (With ECO deac- tivated) Max.
Speed P OFF Digging Mode Check in the Dr. ZX special functions with ECO deacti- vated. Measure engine speed with the lever in neutral. Fast Idle (Heater control: OFF) Max. Speed P OFF Digging Mode Move the pilot shut-off lever to the UNLOCK position. Meas- ure engine speed with the lever in neutral. Fast Idle (Heater control: ON) Max. Speed P OFF Digging Mode Move the pilot shut-off lever to the LOCK position. Engine speed can be measured only when coolant temperature is 5 °C (41 °F) or lower. Fast Idle (Relief operation) Max. Speed P OFF Digging Mode Measure engine speed while relieving the boom raise circuit. Fast Idle (E mode) Max. Speed E Mode OFF Digging Mode Fast Idle (HP mode) Max.
Speed HP Mode OFF Digging Mode Measure engine speed while relieving the boom raise circuit. Auto-Idle Max. Speed P ON Digging Mode Check engine speed 4 sec- onds after returning all control levers to neutral. Warming Up Min. Speed P OFF Digging Mode Engine speed can be meas- ured only when oil temperature is 0 °C (32 °F) or lower. Engine Control Dial Auto-Idle Switch Power Mode Switch