MAINTENANCE AND SERVICING
169469/169470/169471
190
Revision E
7.11.5 HEADER AND REEL HYDRAULICS
7.11.5.1 Relief
Valves
The pressure relief valves are pre-set for all
header sizes and options. See table below.
When the system operating pressure reaches the
relief valve setting, the relief valve opens which
causes a high pitch sound. Reduce the ground
speed to maintain the correct system load and
header drive operation.
An optional load sensor may be installed to warn
the Operator that the system pressure is
approaching an overload condition, by a tone and
flashing the pressure reading. The load will
continue to rise if the Operator does not reduce
ground speed, and the relief valve opens at the
relief valve setting. See table below for
recommended settings.
If lift and drive capacity problems develop, the
pressure relief valve may require adjusting.
Contact your windrower Dealer or refer to the
technical manual for your windrower.
Header Model
Application/System
Windrower Differential Relief
Setting (header attached)
psi (bar)
R80/R85
Disc Pressure
5,500 (379)
D60, D65 and
A40D
Reel/Draper Pressure
2,900 (200)
D60, D65 and
A40D
Knife/Conditioner Pressure
4,000 (275)
7.11.5.2 Flow
Control
Block
Two hydraulic valve blocks with multiple cartridges
are used for the various windrower functions and
are controlled by the Windrower Control Module
(WCM) according to the inputs from the Operator.
The valve blocks are located behind the left
cab-forward side platform.
The valve blocks do not require any scheduled
maintenance other than to check for leaking
fittings or loose electrical connections. If service is
required, contact your windrower Dealer or refer to
the technical manual for your windrower.
DRAPER HEADER HYDRAULICS
ROTARY DISC HEADER HYDRAULICS
Содержание M205 2012
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