Air Actuators; Central Air Drain Cocks (Optional) - Wittke StarLight Maintenance Manual

Part #: 90309
A U C
RMS P
T U
IPPER P
T D
IPPER OWN
MAIN
C
UTOUT

Air Actuators

Air from the air valves and joystick is routed to the air actuators
mounted on the hydraulic valve sections. The air actuators are
dedicated to a particular hydraulic function and influence the
direction in which the valve spool is moved. Once the air supply
is removed from the actuator, the valve spool is centered by its
spring, and the actuator returns to the neutral poisition.

Central Air Drain Cocks (optional)

A series of air drain cocks are provided on a bracket at the
battery box.
?
Note:
• All air tanks should be drained daily
• Be sure to drain the wet tank first.
• Poorly maintained pneumatic control systems are a major
cause of packer control failure.
• Your air drain cocks may differ slightly from those shown at
left.
Valve Box Air Valves
C
UTS AIR USED TO RETRACT THE
UTOUT
ARM CYLINDERS
C
YCLES TIPPER ACTUATOR UP
C
YCLES
DOWN
J D
OYSTICK ISABLES JOYSTICK OPERATION
WITH THE HYDRAULIC PUMP OFF
TIPPER ACTUATOR
57