MacDon M150 SP - Manual (Page 199)

MAINTENANCE AND SERVICING
Form 169017 / 169087 / 169095
197
Revision C
7.12.5 HEADER AND REEL HYDRAULICS
7.12.5.1 Pressure Compensator Valve
The pressure compensator valve is pre-set to be
sufficient for all header sizes and options. See
table below.
When the system operating pressure approaches
the compensator valve setting, a warning tone
sounds on the CDM, indicating a potential
overload on the header drive.
If operation continues, and the pressure reaches
the setting, the compensator valve is activated.
The header drive will begin to slow down to avoid
overheating the drive pumps.
Reduce the ground speed to maintain the correct
system load and header drive operation.
NOTE
The warning tone is only heard if load
sensor is installed (M200 standard, M150
optional).
NOTE
The warning tone is normal when the
operating pressure is very close to the
compensator valve pressure setting.
If lift and drive capacity problems develop, the
pressure compensator valve may require
adjusting. Contact your Windrower Dealer or refer
to the Technical Service Manual for your
Windrower.
WINDROWER
MODEL
HEADER MODEL APPLICATION / SYSTEM
SUGGESTED OVERLOAD
WARNING SETTING
psi (kPa)
WINDROWER
PRESSURE COMP
SETTING
psi (kPa)
M150 D60 and A40D Reel / Draper Pressure 3000 (20684) 3200 (22063)
M150 D60 and A40D Knife / Conditioner Pressure 4000 (27579) 4200 (28958)
M150 R80 Disc Pressure 4000 (27579) 4200 (28958)
M200 R80 Disc Pressure 4300 (29647) 4500 (31026)
M200 D60 and A40D Reel / Draper Pressure 3000 (20684) 3200 (22063)
M200 D60 and A40D Knife / Conditioner Pressure 4300 (29647) 4500 (31026)
7.12.5.2 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 Service Manual for
your Windrower.