The John Deere 420 tractor hydraulic pump flow is 7.3 GPM, and hydraulic system pressure is 1,250 psi.
Hydraulic pump flow7.3 GPM
Implement flow12.3 GPM
Total hydraulic flow9.5 GPM
Hydraulic pressure1,250 psi
John Deere 420 Hydraulic Flow Details
Hydraulic pump flow
7.3 GPM
Implement hydraulic flow
12.3 GPM
Total hydraulic flow
9.5 GPM
Hydraulic system pressure
1,250 psi
Hydraulic Flow Comparison Chart
Hydraulic pump flow comparison
This model
7.3 GPM
Average
17.3 GPM
Low
1.2 GPM
High
110 GPM
Implement hydraulic flow comparison
This model
12.3 GPM
Average
17.1 GPM
Low
1.2 GPM
High
110 GPM
Total hydraulic flow comparison
This model
9.5 GPM
Average
16.5 GPM
Low
1.2 GPM
High
70 GPM
Hydraulic pressure comparison
This model
1,250 psi
Average
2,330.1 psi
Low
435 psi
High
3,625 psi
John Deere 420 Extra Hydraulic Notes
Hydraulic flow note
The John Deere 420’s implement flow figure is about 12.3 GPM, so hydraulic attachment choice should be based on flow demand, not horsepower alone.
Hydraulic pressure note
The John Deere 420’s hydraulic pressure is listed at 1,250 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 (12.3 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.
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.
