The John Deere 4640 tractor hydraulic pump flow is 28.5 GPM, and hydraulic system pressure is 2,250 psi.
Hydraulic pump flow28.5 GPM
Implement flow30 GPM
Total hydraulic flow30 GPM
Hydraulic pressure2,250 psi
Hydraulic system typeopen-center
Hydraulic fluid capacity16.5 gal
John Deere 4640 Hydraulic Flow Details
Hydraulic pump flow
28.5 GPM
Implement hydraulic flow
30 GPM
Total hydraulic flow
30 GPM
Hydraulic system pressure
2,250 psi
Hydraulic system type
open-center
Hydraulic fluid capacity
16.5 gal
Hydraulic Flow Comparison Chart
Hydraulic pump flow comparison
This model
28.5 GPM
Average
22 GPM
Low
5.3 GPM
High
59 GPM
Implement hydraulic flow comparison
This model
30 GPM
Average
21.7 GPM
Low
5.3 GPM
High
43 GPM
Total hydraulic flow comparison
This model
30 GPM
Average
21.9 GPM
Low
4 GPM
High
60 GPM
Hydraulic pressure comparison
This model
2,250 psi
Average
2,726.4 psi
Low
435 psi
High
3,046 psi
Hydraulic fluid capacity comparison
This model
16.5 gal
Average
14.9 gal
Low
2.8 gal
High
43.7 gal
John Deere 4640 Extra Hydraulic Notes
Hydraulic flow note
The John Deere 4640’s implement flow figure is about 30 GPM, so hydraulic attachment choice should be based on flow demand, not horsepower alone.
Hydraulic pressure note
At 2,250 psi, the John Deere 4640’s hydraulic system pressure matters most for lift force, cylinder force and loader response.
Rear remotes / SCV note
Rear remotes / SCVs depend on the tractor’s hydraulic package and options.
For hydraulic implements, match the implement to the available hydraulic flow (30 GPM), not just the number of remotes.
Check the operator manual or hydraulic package because SCV count can change by year, market and trim package.
Hydraulic system type note
The John Deere 4640 uses a open-center hydraulic setup, so compatibility depends on both the attachment and valve configuration.
Hydraulic fluid capacity note
For maintenance, the John Deere 4640’s hydraulic fluid capacity matters more than flow rate because it affects oil changes, filter service and refill quantity.
Official information note
Mistakes do happen. Hydraulic flow, pump flow, implement flow, pressure, rear remote / SCV setup and fluid capacity can change by year, market, transmission, pump option, loader package and hydraulic package. Please check the operator manual and official deere.com website for official information.
