TM2361 (24JUN08) 9005-10-18 450DLC Excavator Operation and Tests 062608 PN=234 Operational Checkout Procedure Swing Park Brake and YES: Go to next check. Circuit Drift Check NO: Upperstructure moves when all functions are in neutral and park brake is engaged. Check for pilot oil pressure to swing park brake. See T140540 –UN–17MAY01 Upperstructure Drift With TX1000874 –UN–01DEC05 Swing Valve In Neutral. (Group 9025-15.) 1—Engine Speed Dial 9005 Fill the bucket with dirt. NO: Upperstructure 10 movement is excessive 18 Position machine on a hillside with a slope of approximately 25%. If a hill is not when park brake is disengaged.
See Swing available, raise one side of machine approximately 300 mm (1 ft) with the boom and Motor Leakage Test. then put a block under the track. (Group 9025-25.) Move arm to the fully extended position. NO: Check swing spool in the control valve. See Raise boom so arm-to-bucket pivot pin are the same height as boom-to-frame pivot Control Valve Remove pin. and Install (Group 3360.) and see Control Valve 5 Position upperstructure with cab over travel motors, perpendicular to tracks. Spool Disassemble and Assemble. (Group 3360.) Turn engine speed dial (1) to L (slow idle) position. Wait approximately 5 minutes with all functions in neutral. NOTE:
Function does not need to be fully actuated to disengage the swing park brake. Slowly actuate bucket load function to disengage the swing park brake. Do not hold the function over relief for more than 10 seconds. LOOK: Does upperstructure hold position when swing park brake is engaged? LOOK: Does upperstructure move only slightly when swing park brake is disengaged? Swing upperstructure 180 degrees counterclockwise and repeat procedure. Turn engine speed dial (1) to L (slow idle) position. Wait approximately 5 minutes with all functions in neutral. Slowly actuate bucket load function to disengage the swing park brake. Do not hold the function over relief for more than 10 seconds. LOOK:
Does upperstructure hold position when swing park brake is engaged? LOOK: Does upperstructure move only slightly when swing park brake is disengaged? – – –1/1 Operational Checkout Procedure Swing Park Brake and Circuit Drift Check T140540 –UN–17MAY01 TX1000874 –UN–01DEC05 1—Engine Speed Dial Fill the bucket with dirt. Position machine on a hillside with a slope of approximately 25%. If a hill is not available, raise one side of machine approximately 300 mm (1 ft) with the boom and then put a block under the track. Move arm to the fully extended position. Raise boom so arm-to-bucket pivot pin are the same height as boom-to-frame pivot pin.
Position upperstructure with cab over travel motors, perpendicular to tracks. Turn engine speed dial (1) to L (slow idle) position. Wait approximately 5 minutes with all functions in neutral. NOTE: Function does not need to be fully actuated to disengage the swing park brake. Slowly actuate bucket load function to disengage the swing park brake. Do not hold the function over relief for more than 10 seconds. LOOK: Does upperstructure hold position when swing park brake is engaged? LOOK: Does upperstructure move only slightly when swing park brake is disengaged? Swing upperstructure 180 degrees counterclockwise and repeat procedure. Turn engine speed dial (1) to L (slow idle) position.
Wait approximately 5 minutes with all functions in neutral. Slowly actuate bucket load function to disengage the swing park brake. Do not hold the function over relief for more than 10 seconds. LOOK: Does upperstructure hold position when swing park brake is engaged? LOOK: Does upperstructure move only slightly when swing park brake is disengaged? YES: Go to next check. NO: Upperstructure moves when all functions are in neutral and park brake is engaged. Check for pilot oil pressure to swing park brake. See Upperstructure Drift With Swing Valve In Neutral. (Group 9025-15.) NO: Upperstructure movement is excessive when park brake is disengaged. See Swing Motor Leakage Test.
(Group 9025-25.) NO: Check swing spool in the control valve. See Control Valve Remove and Install (Group 3360.) and see Control Valve 5 Spool Disassemble and Assemble. (Group 3360.) – – –1/1 9005 10 18