Gravely 950001, Maintenance Manual

Page: 45 / 66

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7.5 TRAVEL FUNCTION - ROTATE
The circuit segment below shows the flow path when
one travel function lever is pushed forward and the
other is pulled backwards. This will cause the right
hand wheels to travel forward and the left hand wheels
to travel backwards, the machine will rotate about its
own axis in this mode. Note how the valve flow for the left hand drive motor doubles back through the series
spool to connect with the parallel valve of the right hand
drive motor.
TO L.H. DRIVE
MOTOR
TO R.H. DRIVE
MOTOR
R.H. DRIVE MOTOR LEVER
PULLED BACKWARD
L.H. DRIVE MOTOR LEVER
PUSHED FORWARD
Note: The cross hatched area of the
valve section indicates the spool has
shifted from neutral into a “working”
mode.
L.H.
MOTOR
R.H.
MOTOR