The John Deere Z665 tractor hydraulic pump flow is 19.8 GPM, and hydraulic system pressure is 2,000 psi.
Hydraulic pump flow19.8 GPM
Implement flow19.8 GPM
Total hydraulic flow3.5 GPM
Hydraulic pressure2,000 psi
Hydraulic system typeclosed-center
Hydraulic fluid capacity3.5 qt (0.9 gal)
John Deere Z665 Hydraulic Flow Details
Hydraulic pump flow
19.8 GPM
Implement hydraulic flow
19.8 GPM
Total hydraulic flow
3.5 GPM
Hydraulic system pressure
2,000 psi
Hydraulic system type
closed-center
Hydraulic fluid capacity
3.5 qt (0.9 gal)
Hydraulic Flow Comparison Chart
Hydraulic pump flow comparison
This model
19.8 GPM
Average
13.4 GPM
Low
0.9 GPM
High
85 GPM
Implement hydraulic flow comparison
This model
19.8 GPM
Average
11.1 GPM
Low
0.9 GPM
High
78 GPM
Total hydraulic flow comparison
This model
3.5 GPM
Average
13 GPM
Low
0.9 GPM
High
78 GPM
Hydraulic pressure comparison
This model
2,000 psi
Average
1,813.3 psi
Low
300 psi
High
3,000 psi
Hydraulic fluid capacity comparison
This model
0.9 gal
Average
3.6 gal
Low
0.5 gal
High
60 gal
John Deere Z665 Extra Hydraulic Notes
Hydraulic flow note
The John Deere Z665’s implement flow figure is about 19.8 GPM, so hydraulic attachment choice should be based on flow demand, not horsepower alone.
Hydraulic pressure note
At 2,000 psi, the John Deere Z665’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 (19.8 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 Z665 uses a closed-center hydraulic setup, so compatibility depends on both the attachment and valve configuration.
Hydraulic fluid capacity note
The John Deere Z665’s hydraulic fluid capacity is listed as 3.5 qt (0.9 gal); check the operator manual before servicing because capacity can change with transmission, hydraulic options and market.
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.
