Fuel Filler Pipe And Breather Assembly
Fuel Filler Pipe - All Except North American Specification and China (CN6) Vehicles
| ITEM | DESCRIPTION |
|---|---|
| 1 | Fuel filler cap |
| 2 | Breather pipe connector |
| 3 | Breather pipe |
| 4 | Fuel filler hose |
| 5 | Hose clamp |
| 6 | Check valve |
| 7 | Breather connector on the fuel tank |
| 8 | Hose clamp |
| 9 | Bracket |
| 10 | Fuel filler pipe |
| 11 | Bracket |
Fuel Filler Pipe - North American Specification and China (CN6) Vehicles Only
| ITEM | DESCRIPTION |
|---|---|
| 1 | Fuel filler cap |
| 2 | Connector |
| 3 | Connector |
| 4 | Breather pipe |
| 5 | Fuel vapor pipe - To the evaporative emissions canister |
| 6 | Fuel vapor pipe connector |
| 7 | Fuel vapor pipe - To the breather |
| 8 | Fuel filler hose |
| 9 | Hose clamp |
| 10 | Check valve |
| 11 | Connector |
| 12 | Hose clamp |
| 13 | Bracket |
| 14 | Fuel filler pipe |
| 15 | Bracket |
The fuel filler neck of the fuel filler pipe is located at the rear of the vehicle, above the rear right wheel. The filler pipe and cap is covered by a molded plastic fuel flap.
The fuel filler flap has the option to be non-locking or electrically locked when the vehicle is locked.
The fuel filler cap is a conventional screw-in type which is secured to the vehicle with a lanyard. The fuel filler cap must be securely fitted to make sure that the tank venting system is sealed and, on non North American Specification (NAS) vehicles, prevent potential fuel loss.
On non NAS vehicles the fuel filler cap has a ratchet locking mechanism. The fuel filler cap should be screwed-in to a torque of 3 audible clicks to make sure that it is correctly tightened.
Failure to correctly secure the fuel filler cap will result in vapor being lost from the system to atmosphere.
The filler pipe is a stainless steel fabrication which is secured to the vehicle body with 2 brackets and nuts. A metal stub pipe, attached to the filler neck, provides for the attachment of the breather pipe.
The fuel filler pipe attaches to a stub at the rear of the fuel tank which incorporates a check valve. The in-line check valve is mounted inside the fuel tank inlet stub, and is retained in the closed position by a spring. The check valve is only opened when the vehicle is refueled.
On non NAS vehicles a breather pipe is connected between the fuel filler neck and a stub in the fuel tank. The breather pipe enables the fuel tank to be filled, allows for expansion of the fuel vapor and controls the fuel cut off during filling. The fuel vapor is routed to an evaporative emissions canister.
For additional information, Refer to: DESCRIPTION AND OPERATION
North American Specification Only
On North American Specification (NAS) vehicles the fuel filler cap has a locking mechanism which gives an audible click when the cap is correctly tightened.
Failure to correctly secure the fuel filler cap will result in vapor being lost from the system to atmosphere.
On NAS vehicles a combined fuel vapor and breather pipe is connected to a stub in the fuel tank. A pipe connection splits the combined hose to independently connect pipes to the fuel filler neck and the evaporative emissions canister. The pipe to the filler neck will only be used for Evaporative Emissions (EVAP), as the refueling breather pipe is routed to the evaporative emissions canister.
For additional information, Refer to: DESCRIPTION AND OPERATION