Operational Checkout Procedure TM2361 (24JUN08) 9005-10-25 450DLC Excavator Operation and Tests 062608 PN=241 Travel System Tracking Check T6998AS –UN–23MAR89 1—Engine Speed Dial 2—Auto-Idle Switch 3—Power Mode Switch 4—Travel Speed Switch Turn engine speed dial (1) to H (fast idle) position. Turn power mode switch (3) to P (power) mode. Turn travel speed switch (4) to fast speed (rabbit) mode. Operate machine at full speed forward on a flat and level area about 20 m (65 ft). Repeat procedure in reverse travel. Observe which direction and how much the machine mistracks from a straight line. LOOK: Does machine mistrack less than 200 mm (7.88 TX1000744 –UN–29NOV05 in.)? YES: Go to next check.
NO: Note which direction the machine mistracks. If machine mistracks left, hydraulic pump 2 circuit oil flow may be less than specification. If machine mistracks right, hydraulic pump 1 circuit oil flow may be less than specification. See Diagnose Travel System Malfunctions. (Group 9025-15.) – – –1/1 9005 10 25 Travel System Tracking Checks While Operating a Dig Function 1—Engine Speed Dial 2—Auto-Idle Switch 3—Power Mode Switch 4—Travel Speed Switch NOTE: Machine will slow down during this test. Turn engine speed dial (1) to H (fast idle) position. Turn travel speed switch (4) to fast speed (rabbit) mode. Operate machine at full speed forward on a flat and level surface.
After machine is moving, actuate arm out from neutral to full actuation and extend the arm. LOOK: Does machine mistrack excessively when the arm is extended? TX1000744 –UN–29NOV05 YES: See Combined Travel And Dig Functions Slow Or No Power. (Group 9025-15.) NO: Go to next check. – – –1/1