The listed coolant capacity for the John Deere 9R 590 is 16.9 gal (64 L). Keep a little extra coolant available for final top-up after air leaves the system.
John Deere 9R 590 Coolant Capacity Specs
| Coolant capacity | 16.9 gal (64 L) |
|---|---|
| Engine horsepower | 582 hp |
| Engine displacement | 826.9 cu in (13.55 L) |
John Deere 9R 590 Coolant Capacity Guide
Coolant capacity guide
Compared with a broad 9 series guide, not the full tractor dataset.
John Deere 9R 590 Coolant Service Notes
| Coolant capacity note | The main coolant number for the John Deere 9R 590 is 16.9 gal (64 L). Use it as the cooling-system refill amount, then check the radiator or overflow level after the engine has warmed up and cooled down |
|---|---|
| Coolant service note | For a full coolant service on the John Deere 9R 590, plan around 16.9 gal (64 L), refill slowly, run the engine, let it cool and recheck the level |
| Refill check | When refilling the John Deere 9R 590, do not pour in 16.9 gal (64 L) and walk away. Fill slowly, run the engine, let it cool and recheck the level |
| Engine context | The engine context for the John Deere 9R 590 is engine horsepower 582 hp and engine displacement 826.9 cu in (13.55 L). Use this for comparison only; the refill amount is the coolant capacity above |
John Deere 9R 590 Coolant Capacity FAQ
How many gallons of coolant does the John Deere 9R 590 hold?
A full coolant refill on the John Deere 9R 590 is listed at 16.9 gal (64 L). Fill slowly and allow for a small top-up after the first heat cycle
Why does coolant level drop after changing coolant in the John Deere 9R 590?
Check the John Deere 9R 590 coolant level cold after service. Hot coolant is pressurized and dangerous, so let the system cool before opening the cap
Is topping up enough for the John Deere 9R 590 cooling system?
If coolant condition is good, topping up may be enough. If it is old or contaminated, a full drain and refill is safer for the John Deere 9R 590
Mistakes do happen. Tractor coolant capacity and coolant type can change by year, market, engine, radiator setup and service procedure. Check the operator manual, service manual and official deere.com website before draining, flushing or refilling the cooling system.







