Buhler 535 - Manual (Page 101)

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Section 3 - Operation
Hydraulic System Overview
Hydraulic System
The tractor comes equipped with either a standard
manual hydraulic or the optional electro-hydraulic
(EHR) system . The system consists of a hydraulic
reservoir, a load-sensing variable-flow hydraulic
pump, an implement valve assembly with flow control
capability, quick couplers, a filter and oil coolers as
standard equipment .
A master control valve provides priority flow for
steering and excess flow to the implement valve .
A closed center steering motor receives priority flow
which feeds the steering cylinders .
Hydraulic Quick Couplers
Tractors with manual hydraulics are equipped with
four or six remote couplers . Tractors with optional
electro-hydraulics (EHR) are equipped with four, six
or eight couplers .
Each remote coupler is color coded with it’s
corresponding control lever .
From bottom to top:
 . Control lever  (Green) with load check
2 . Control lever 2 (Blue) with load check
3 . Control lever 3 (Brown)
4 . Control lever 4 (Gray)
5 . Control lever 5 (Black)
6 . Control lever 6 (White)
7 . Control lever 7 (Purple)
8 . Control lever 8 (Lime)
Load checks are installed in the “extend” port of the
lower two control valves  and 2 .
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Pump 2
Pump 3
Pump 1
1
2
3
4
5
6
7
8