John Deere 6068HF475 — Flushing and Refilling Cooling System
Maintenance
For the John Deere 6068HF475, from the John Deere owner's manual.
Applies to: PowerTech 6068HF475
Before you start
- Do not run engine longer than 10 minutes with water.
Procedure
- Pressure test cooling system and cap if not done.
- Open filler/radiator cap slowly to relieve pressure.
- Open engine block drain valve/plug and radiator drain valve.
- Fill system with clean water; run engine about 10 minutes.
- Drain water; refill with water and heavy-duty cooling system cleaner.
- Drain cleaner; flush with water; close all drain valves.
- Install thermostats with new gasket; add coolant to bottom of filler neck.
- Run engine to operating temperature; check level and leaks.
Specs & values
- 4.5 L coolant capacity 8.5 L (9 qt)
- 6.8 L coolant capacity 11.3 L (12 qt)
Full service-parts list: PowerTech 6068HF475 →
Source: John Deere owner's manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.