Serious RED 52K650Z, Operator'S Manual

Page: 15 / 20

ENCORE
14
CONTROLS AND FEATURES - BDP-10L VARIABLE PUMP
Direct Displacement Control
The direct-proportional displacement control
(DDC) provides a simple method of control.
Movement of the swashplate control shaft
produces a proportional swashplate
movement and change in pump flow and/or
direction.
If difficulties are encountered with the control,
inspect the connection of the control linkage
to the swashplate control shaft to insure that
the linkage is properly attached. The vehicle/
machine control system determines the
neutral position of the linkage.
Charge Pumps
A fixed displacement geroter type charge
pump is provided as part of the BDP-10L.
Bypass Valve
In some application, it is desirable to move
the machine for short distances at low speeds
without operating the engine. A bypass valve
allows oil to be routed from one side of the
pump/motor circuit to the other, thus allowing
the motor to turn with little resistance.
The BDP variable pumps utilize a screw type
bypass valve which is fully open when
unscrewed two (2) turns maximum. The
bypass valve must be fully closed during
normal vehicle operation.
WARNING:
OPENING THE BYPASS VALVE WILL
RESULT IN A LOSS OF HYDROSTATIC
BRAKING CAPACITY. TAKE
PRECAUTIONS TO PREVENT MACHINE
MOVEMENT WHEN OPENING THE
VALVE.
BDP-10L Variable Pump with
Charge Pump
BDP-10L Pump