Bleed Fuel System

Service Interval—As Required1

IMPORTANT: Any time the fuel system has been opened up for service (lines disconnected or filters removed), it will be necessary to bleed air from the system.

NOTE: A second person will be needed for the following procedure.

The fuel system can be bled at two locations:

• Final Fuel Filter
• Fuel Injection Pump

Final Fuel Filter

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   A - Bleed Vent Screw

   B - Hand Primer

   Open bleed vent screw (A).

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2. Have a second person pump hand primer (B) on fuel transfer pump.

3. When no air bubbles are seen close vent screw.

4. Pump the hand primer until resistance is felt.

5. Repeat until no air bubbles flow from vent screw. Then tighten bleed screw (A).

Fuel Injection Pump

1. 
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   A - Fuel Return Line

   B - Hand Primer

   Loosen fuel return line (A) at fuel injection pump.

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2. Have a second person pump hand primer (B) on fuel transfer pump.

3. When no air bubbles are seen tighten fuel return line.

4. Pump the hand primer until resistance is felt.

5. Repeat until no air bubbles flow from fuel return line. Then tighten fuel return line (A).

   Item	Measurement	Specification
   Fuel Return Line	Torque	27 N·m (20 lb-ft)