The John Deere 9RX 770 takes 18.89 gal (71.5 L) of coolant. After refilling, run the engine, let it cool and confirm the final level.
John Deere 9RX 770 Coolant Capacity Specs
| Coolant capacity | 18.89 gal (71.5 L) |
|---|---|
| Engine horsepower | 770 hp |
| Engine displacement | 1,098 cu in (18 L) |
John Deere 9RX 770 Coolant Capacity Guide
Coolant capacity guide
Compared with a broad 9 series guide, not the full tractor dataset.
John Deere 9RX 770 Coolant Service Notes
| Coolant capacity note | The useful service number here is 18.89 gal (71.5 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 770, plan around 18.89 gal (71.5 L), refill slowly, run the engine, let it cool and recheck the level |
| Refill check | When refilling the John Deere 9RX 770, do not pour in 18.89 gal (71.5 L) and walk away. Fill slowly, run the engine, let it cool and recheck the level |
| Engine context | For comparison, the John Deere 9RX 770 engine details listed here are engine horsepower 770 hp and engine displacement 1,098 cu in (18 L). The coolant capacity remains the service number to use for refilling |
John Deere 9RX 770 Coolant Capacity FAQ
What is the John Deere 9RX 770 cooling system capacity?
A full coolant refill on the John Deere 9RX 770 is listed at 18.89 gal (71.5 L). Fill slowly and allow for a small top-up after the first heat cycle
Can the John Deere 9RX 770 coolant level drop after refilling?
Check the John Deere 9RX 770 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 770 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 770
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.
