Loading ...
Loading ...
Loading ...
Miscellaneous—Operational Checkout
Continued on next page KR46761,0001414 -19-01AUG18-33/50
Swing Park Brake and
Circuit Drift Check
TX1093770 —UN—28JUN13
Machine Position
Fill the bucket with dirt, if applicable.
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-attachment pivot pin is the same height as boom-to-frame
pivot pin.
Position upperstructure with cab over travel motors, perpendicular to tracks.
Turn engine speed dial 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 attachment 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 to L (slow idle) position.
Wait approximately 5 minutes with all functions in neutral.
Slowly actuate attachment 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? YES: Go to next check.
LOOK: Does upperstructure move only slightly when swing park brake is disengaged? NO: See an authorized
Hitachi dealer.
4-2-28
112321
PN=308
Loading ...
Loading ...
Loading ...