Service Manual

Specications
Groundsmaster3280-Dand3320-G
ItemDescription
Hydrostatictransmission(MachineSerialNumberbelow
316000000)
Chargepump(MachineSerialNumberbelow316000000)
Hydraulicpump(MachineSerialNumberabove316000000)
Hydraulicmotor(MachineSerialNumberabove316000000)
DanfossSeries15UStyleAxialPistonTransmission
GerotorPumpinHydrostat
Danfoss,DDC20AxialPistonPump
Eaton74118FixedAxialPistonMotor
Maximumpumpdisplacement(perrevolution)
ForMachineSerialNumberbelow316000000
ForMachineSerialNumberabove316000000
15cm
3
(0.9in
3
)
20.3cm
3
(1.24in
3
)
Tractioncircuitreliefpressure(forwardandreverse)
ForMachineSerialNumberbelow316000000
ForMachineSerialNumberabove316000000
55,156kPa(800psi)
32,495kPa(4,713psi)
MotorDisplacement(perrevolution)
ForMachineSerialNumberbelow316000000
ForMachineSerialNumberabove316000000
15cm
3
(0.9in
3
)
20.3cm
3
(1.24in
3
)
Chargepumpdisplacement(perrevolution)
ForMachineSerialNumberbelow316000000
ForMachineSerialNumberabove316000000
4.9cm
3
(0.3in
3
)
5.4cm
3
(0.33in
3
)
Chargepressure
ForMachineSerialNumberbelow316000000
ForMachineSerialNumberabove316000000
482to1,034kPa(70to150psi)
503kPa(73psi)
Steeringvalve
Displacement(perrevolution)
DanfossSteeringUnit,TypeOSPM
80cm
3
(4.88in
3
)
Steeringcircuitreliefpressure
ForMachineSerialNumberbelow316000000
ForMachineSerialNumberabove316000000
5,515kPa(800psi)
7,239kPa(1,050psi)
Liftcontrolvalve
ForMachineSerialNumberbelow316000000
ForMachineSerialNumberabove316000000
SpoolTypeDirectionalControlValvewithAdjustable
ExternalCounterbalanceValve
SpoolTypeDirectionalControlValvewithAdjustable
InternalCounterbalanceValve
Counterbalancepressure(MachineSerialNumberbelow
316000000)
RefertotheTractionUnitOperator'sManual
Liftcircuitreliefpressure
ForMachineSerialNumberbelow316000000
ForMachineSerialNumberabove316000000
5,515kPa(800psi)
690kPa(100psi)
Hydrauliclter
25Micronspin-oncartridgetype
HydraulicuidRefertotheTractionUnitOperator'sManual
Hydraulicreservoir(frontaxle)capacity5.7L(1.5USgallons)
Groundsmaster
®
3280-D/3320
Page5–3
HydraulicSystem:Specications
05138SLRevB