MacDon 9000 - Header Drive: Hydraulics; Flow Control

MAINTENANCE/SERVICE
Header Drive: Hydraulics
FLOW CONTROL
Flow control
(A) , located under cab at header
clutch lever, provides hydraulic power
to the
various headers as follows:
Auger Header
The flow control supplies the
reel drive with flow
variable from
8 to 16 gallons per minute (gpm).
NOTE: In conditions where very slow reel speed
is required, for example, "Grass
Seed Special"
Auger Header, control stem
(B) (which is factory
set
to 8 gpm) may be turned clockwise to reduce
flow below
8 gpm. Remove U-shaped clip to allow
adjustment
of stem.
Overload protection for the auger header re
el drive
is provided by an internal relief valve
in the flow
cont
rol .
Harvest Header and Multi-Crop Header
Flow control supplies
reel and conveyor* drives
with flow variable from
O to 8 gallons per minute
(gpm) to each circuit.
* For Harvest Header, conveyor circuit drives the
drapers. For Multi-Crop Header, conveyor circuit
drives the double augers.
For Harvest Header and Multi-Crop Header there
are also relief valves
(C) and (D) at right and left
tractor legs.
Valve (C) at right leg provides over-
load protection for the
reel and reel drive. Valve
(D) protects the conveyor drive.
94
HEADER DRIVE FLOW CONTROL
(AUGER HEADER - ONE MOTOR)
HEADER DRIVE FLOW CONTROL
(HARVEST & MULTI-CROP -TWO MOTORS)
REEL CIRCUIT RELIEF VALVE
(HARVEST HEADER & MULTI-CROP HEADER)
CONVEYOR CIRCUIT RELIEF VALVE
(HARVEST HEADER & MULTI-CROP HEADER)