The John Deere 9RX 590 takes 16.9 gal (64 L) of coolant. After refilling, run the engine, let it cool and confirm the final level.
Coolant capacity16.9 gal (64 L)Cooling system refill amount
John Deere 9RX 590 Coolant Capacity Specs
Coolant capacity
16.9 gal (64 L)
Engine horsepower
590 hp
John Deere 9RX 590 Coolant Capacity Guide
Coolant capacity guide
This model
16.9 gal
Class low
15 gal
Class typical
28 gal
Class high
45 gal
Compared with a broad 9 series guide, not the full tractor dataset.
John Deere 9RX 590 Coolant Service Notes
Coolant capacity note
The useful service number here is 16.9 gal (64 L). Keep some extra coolant available because trapped air can lower the level after the first warm-up
Coolant service note
For a full coolant service on the John Deere 9RX 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 9RX 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
For comparison, the John Deere 9RX 590 engine details listed here are engine horsepower 590 hp. The coolant capacity remains the service number to use for refilling
John Deere 9RX 590 Coolant Capacity FAQ
What is the John Deere 9RX 590 cooling system capacity?
A full coolant refill on the John Deere 9RX 590 is listed at 16.9 gal (64 L). Fill slowly and allow for a small top-up after the first heat cycle
Can the John Deere 9RX 590 coolant level drop after refilling?
Check the John Deere 9RX 590 coolant level cold after service. Hot coolant is pressurized and dangerous, so let the system cool before opening the cap
Should I flush the John Deere 9RX 590 cooling system or just top it up?
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 9RX 590
Official information note
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.
