Serious RED 52K650Z Operator's Manual - Encore
ENCORE
13
BDP-10L VARIABLE PUMP – SUPPORT SYSTEM
TRANSMISSION HYDRAULIC SUPPORT SYSTEM
The charge pump incorporated into the BDP-
10L units supplies fluid to keep the closed
loop charged, preventing cavitations and
providing cooling oil flow for the system. An
inlet filter is required to insure that only clean
fluid enters the system. The charge relief
valve is designed to maintain the charge
pressure at 25 to 70 PSI at 3600 RPM input
speed.
Since either of the main hydraulic passages
can be at high pressure, two (2) charge check
valves are used to direct make-up fluid into
the low-pressure side of the closed loop.
These check valves are located in the pump
end cap.
FILTER
RESERVOIR
CASE
DRAIN
INPUT
SHAFT
VARIABLE
SWASHPLATE
CYLINDER
BLOCK
ASSEMBLY
VARIABLE
DISPLACEMENT
PUMP
COOLING
ORIFICE
CHARGE
PUMP
BYPASS
VALVE
CHARGE
RELIEF
VALVE
CHECK
VALVE
LINE B
LINE A
CHECK
VALVE
CAUTION:
The loss of hydrostatic driveline power in
any mode of operation may cause a loss of
hydrostatic braking capacity. A braking system,
redundant to the hydrostatic transmission must,
therefore, be provided which is adequate to stop
and/or hold the system should the condition
develop.
Certain service procedures may require the
vehicle/machine to be disabled (wheels raised
off the ground, work function disconnect, etc.)
while performing them in order to prevent injury
to the technician and bystanders.
CAUTION:
Use caution when dealing with hydraulic
fluid under pressure. Escaping hydraulic fluid
under pressure can have sufficient force to
penetrate your skin causing serious injury. This
fluid may also be hot enough to burn. Serious
infection or reactions can develop if proper
medical treatment is not administered
immediately.
Some cleaning solvents are flammable. To
avoid possible fire, do not use cleaning solvents
in an area where a source of ignition may be
present.