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 T5-6. NOTE: ECO stands for the auto engine speed re- duction system by 100 min -1 . Switch Panel: Monitor Unit: Digging Mode T1V1-04-03-001 T1V1-05-01-007 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 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 (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 Measure engine speed with the lever in neutral. 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 Move the key switch to the ON position. Engine speed can be measured only when oil tem- perature is 0 °C (32 °F) or lower. Engine Control Dial Auto-Idle Switch Power Mode Switch