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435/485/535
3-79
To ease removal and installation of the couplers,
relieve the pressure in the system. Securely support
the implement. Make sure no one will be injured by
moving equipment when relieving pressure in the
system. Move the control switch to the float position
with the engine running. This will relieve the pressure.
Turn the engine off with the control switch still in
float. After the engine is shut down return the control
switch to the neutral position. The couplers can now
be connected or disconnected with minimal pressure
and effort.
When using a double-acting cylinder, connect the
supply hose from the cylinder to the extend/raise
coupler (right side) and the return hose to the retract/
lower coupler (left side). To extend a double-acting
cylinder, pull the remote lever rearward to position (1).
To retract the cylinder, push the control lever forward
one position from neutral (2).
When using a single-acting cylinder, connect the
supply line to the right coupler. To extend the cylinder,
pull the remote lever rearward to position (1). To
retract the cylinder, push the control lever forward one
position from neutral (2).
To disconnect the coupler, make sure that the remote
control lever is in the neutral position and the engine
is off. Check to be sure that the implement has its
transport stops in place or is lowered to the ground.
Grasp the coupler tip behind its hose connection and
firmly pull the connector out of the coupler. Replace the
dust cover on the coupler and cover the tip of the hose
with a protective cap to minimize contamination.
WARNING: HYDRAULIC FLUID ESCAPING UNDER
PRESSURE CAN PENETRATE THE SKIN CAUSING
SERIOUS PERSONAL INJURY. WEAR GLOVES
AND PROTECTIVE CLOTHING WHEN SERVICING
HYDRAULICS. BE SURE THAT ALL CONNECTIONS
ARE TIGHT AND HOSES AND LINES ARE
UNDAMAGED.
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F3-91
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F3-89
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Bleeding Remote Cylinders
When connecting a cylinder with trapped air (i.e.,
a new cylinder, one that has been out of service, or
one that has had the hoses disconnected), it will be
necessary to bleed the cylinder to remove the air.
With the hoses connected to the remote control valve
couplers at the rear of the tractor, position the cylinder
with the hose end uppermost and extend and retract
the cylinder seven or eight times using the remote
control valve operating lever. Check the hydraulic
tank oil level before and after operating the remote
cylinder.
Section 3 - Operation
Hydraulic Operation - Manual