The John Deere 4066M tractor hydraulic pump flow is 10.2 GPM, and hydraulic system pressure is 2,500 psi.
Hydraulic pump flow10.2 GPM
Implement flow15.9 GPM
Total hydraulic flow15.9 GPM
Hydraulic pressure2,500 psi
Hydraulic system typeclosed-center
Hydraulic fluid capacity23.8 gal
John Deere 4066M Hydraulic Flow Details
Hydraulic pump flow
10.2 GPM
Implement hydraulic flow
15.9 GPM
Total hydraulic flow
15.9 GPM
Hydraulic system pressure
2,500 psi
Hydraulic system type
closed-center
Hydraulic fluid capacity
23.8 gal
Hydraulic Flow Comparison Chart
Hydraulic pump flow comparison
This model
10.2 GPM
Average
15.7 GPM
Low
5.1 GPM
High
57 GPM
Implement hydraulic flow comparison
This model
15.9 GPM
Average
14.9 GPM
Low
4.8 GPM
High
32 GPM
Total hydraulic flow comparison
This model
15.9 GPM
Average
15.4 GPM
Low
4.8 GPM
High
57 GPM
Hydraulic pressure comparison
This model
2,500 psi
Average
2,336.3 psi
Low
380 psi
High
3,625 psi
Hydraulic fluid capacity comparison
This model
23.8 gal
Average
9.9 gal
Low
0.7 gal
High
25.4 gal
John Deere 4066M Extra Hydraulic Notes
Hydraulic flow note
The John Deere 4066M should be matched to implements that fit its 15.9 GPM hydraulic-flow range.
Hydraulic pressure note
The John Deere 4066M’s hydraulic pressure is listed at 2,500 psi, which is normal utility-tractor pressure; flow still decides attachment speed while pressure affects force.
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 (15.9 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
System type matters on the John Deere 4066M: closed-center affects how hydraulic flow and pressure are delivered to valves and implements.
Hydraulic fluid capacity note
For maintenance, the John Deere 4066M’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.
