Bleed Fuel System-540G-III, 548G-III, 640G-III, 648G-III

causym CAUTION: Escaping fluid under pressure can penetrate the skin causing serious injury. Avoid the hazard by relieving pressure before disconnecting hydraulic or other lines. Tighten all connections before applying pressure. Search for leaks with a piece of cardboard. Protect hands and body from high pressure fluids.

If an accident occurs, see a doctor immediately. Any fluid injected into the skin must be surgically removed within a few hours or gangrene may result. Doctors unfamiliar with this type of injury should reference a knowledgeable medical source. Such information is available from Deere & Company Medical Department in Moline, Illinois, U.S.A.

Whenever the fuel system has been opened up for service, it will be necessary to bleed air from the system.

1. Turn key switch to ON position.

2. Loosen primary fuel filter bleed screw (B). Operate priming pump (C) until fuel flow is free of bubbles. Tighten bleed screw.

3. Loosen final fuel filter bleed screw (A). Operate priming pump (C) until fuel flow is free of bubbles. Tighten bleed screw.

X9811
T112694


A-Final Fuel Filter Bleed Screw
B-Primary Fuel Filter Bleed Screw
C-Priming Pump

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4. Loosen fuel supply line (A). Operate priming pump until fuel flows out of connection. Tighten connection.

5. Start engine. If engine will not start, it will be necessary to purge air from injection lines.


A-Fuel Supply Line

T6564AD

540G-III, 548G-III Shown

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6. To purge air from injection lines, loosen injection nozzle connections using two wrenches.

7. Move speed control lever to slow idle and crank engine (but do not start) until a small amount of fuel leaks from injection lines.

8. Tighten injection line connections and start engine.

T92924

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