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435/485/535
Section 3 - Operation
Hydraulic Operation - Manual
Pressure Release Detent Adjustment
The detent adjustment screw (1) located on the rear of
the valve, may be adjusted to vary the system pressure
required to return each lever to the neutral position.
To adjust, loosen the jam nut and rotate the screw
clockwise to increase the release detent pressure.
A variable pressure flow meter should be used to
slowly raise the system pressure to accurately set
each detent. The adjustment should be made by your
authorized Buhler Versatile dealer.
NOTE: The factory pressure release detent setting is
150 bar (2175 PSI).
WARNING: ONLY ADJUST THE SCREW WHEN THE
REMOTE CONTROL LEVERS ARE IN NEUTRAL AND
THE TRACTOR IS SHUT OFF.
Hydraulic Quick Couplers
Each remote valve section has a pair of hydraulic
quick couplers located at the rear of the tractor. These
are color-coded with the hydraulic control levers in
the cab. The couplers are self-sealing and leverless
and require no tools for connecting and disconnecting
hoses. The couplers also permit hoses to detach
themselves from the coupler should an implement
become disconnected from the tractor.
The left section couplers (2) are identified by an
“extend/raise” symbol on the couplers dust cover and
the right section (3) are identified by a “retract/lower”
symbol on the couplers dust cover.
Excess oil drain hoses (4) are attached to each coupler
to drain away oil released during connection and
separation of the couplers.
The couplers will accept standard (1/2
") SAE or ISO
tips. The couplers can be connected or disconnected
under pressure.
Coupler Connection
1. To connect couplers, wipe the outside tip of
the coupler to remove any dust and minimize
contamination.
2. Swing the dust cover (5) aside and insert the hose
into the coupler, making sure the hose is properly
seated.
F3-95
1
F3-96
3
25
4
3. Actuate the remote valve to supply hydraulic
pressure which will complete the hydraulic coupling
of the tractor and implement.