20-56
TESTING AND ADJUSTMENTS
CONTROL OF HYDRAULIC DRIFTS -
ANALYSIS OF THE CAUSES OF A DRIFT
3 - Disconnect the hoses (1) and (2) from the mo-
tor and plug them to prevent entry of impuri-
ties. Attach provisional tubes to the motor to
catch any oil leakages.
4 - Start the engine, move the machine to a 15ë
slope, and stop the engine.
5 - Mark the position between revolving frame and
lower track-frame on the swing circle and for 15
minutes check whether or not the revolving fra-
me rotates.
.
If the revolving frame rotates the drift is
due to either the safety valve or the control
valve.
H
To establish the cause of the drift, install a
new safety valve.
PC12R-8 PC15R-8
RKPA0301
1
2
RKP05050
135
°
15
°
Summary of Contents for PC12R-8 MISTRAL
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