John Deere 6068HF475 — Bleeding the Fuel System (Stanadyne DE10 Pump)
Maintenance
For the John Deere 6068HF475, from the John Deere owner's manual.
Applies to: PowerTech 6068HF475
Before you start
- Always use a backup wrench when loosening or tightening fuel lines.
Procedure
- Loosen air bleed vent screw two full turns on fuel filter base.
- Operate fuel supply pump primer lever or primer button.
- Tighten bleed plug securely; continue operating primer until pumping action not felt.
- Start engine and check for leaks.
- If needed, loosen fuel return line at injection pump and bleed until free of bubbles.
- Tighten return line to 27 N.m (20 lb-ft).
- If needed, loosen two nozzle fuel line connections and crank 15 seconds.
- Retighten nozzle delivery lines to 27 N.m (20 lb-ft).
Tools required
- Open-end wrenches Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Fuel injection pump return line 27 N.m (20 lb-ft)
- Nozzle delivery lines 27 N.m (20 lb-ft)
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.