The John Deere 40A tractor hydraulic pump flow is 18 GPM, and hydraulic system pressure is 1,080 psi.
Hydraulic pump flow18 GPM
Implement flow18 GPM
Total hydraulic flow18 GPM
Hydraulic pressure1,080 psi
Hydraulic system typeclosed-center
Hydraulic fluid capacity6.5 gal
John Deere 40A Hydraulic Flow Details
Hydraulic pump flow
18 GPM
Implement hydraulic flow
18 GPM
Total hydraulic flow
18 GPM
Hydraulic system pressure
1,080 psi
Hydraulic system type
closed-center
Hydraulic fluid capacity
6.5 gal
Hydraulic Flow Comparison Chart
Hydraulic pump flow comparison
This model
18 GPM
Average
20.7 GPM
Low
3.7 GPM
High
110 GPM
Implement hydraulic flow comparison
This model
18 GPM
Average
21.2 GPM
Low
3.7 GPM
High
110 GPM
Total hydraulic flow comparison
This model
18 GPM
Average
19.9 GPM
Low
3.7 GPM
High
55 GPM
Hydraulic pressure comparison
This model
1,080 psi
Average
2,198.4 psi
Low
700 psi
High
4,200 psi
Hydraulic fluid capacity comparison
This model
6.5 gal
Average
12.1 gal
Low
1.2 gal
High
55 gal
John Deere 40A Extra Hydraulic Notes
Hydraulic flow note
The John Deere 40A’s implement flow figure is about 18 GPM, so hydraulic attachment choice should be based on flow demand, not horsepower alone.
Hydraulic pressure note
The John Deere 40A’s hydraulic pressure is listed at 1,080 psi, which is lower-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 (18 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 40A’s hydraulic system type is closed-center, which is built for higher-pressure hydraulic control than a basic open-center setup.
Hydraulic fluid capacity note
For maintenance, the John Deere 40A’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.
