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How do you get your serpentine belt over tensioner g20 van?

Getting a serpentine belt onto a tensioner, especially on a G20 van (assuming you mean a vehicle with a similar setup to a BMW 2-series Gran Tourer, although the exact specifics might differ based on year and engine), requires a bit of finesse. There's no single method that works universally, but here's a general approach:

1. Access and Preparation:

* Consult your vehicle's repair manual: This is crucial. It will show you exactly where the tensioner is, how it's released, and the routing of the belt. Improper routing can lead to damage.

* Loosen the tensioner: This is usually done with a wrench or socket, but sometimes you may need a special tool. The repair manual will specify. The tensioner will typically have a bolt or a lever that, when loosened or moved, releases tension on the belt.

* Remove the old belt: Once the tension is released, the belt should be easily removable from the pulleys.

2. Installing the new belt:

* Partial installation: Start by loosely draping the new belt over the largest pulleys (usually the crankshaft pulley). Work your way around, ensuring the belt is seated correctly on each pulley. Don't force it – it should go on fairly smoothly.

* Tensioner manipulation: This is where the most skill is needed. You'll need to use a wrench or the tensioner tool (if required) to hold the tensioner in its released position while you carefully guide the belt onto the last pulley (often the tensioner pulley itself). A helper can be invaluable here. One person holds the tensioner, while the other guides the belt.

* Release and check: Once the belt is fully on, slowly release the tensioner and allow it to return to its normal position. Make sure the belt sits correctly on all pulleys and spins freely.

3. Final Checks:

* Visual inspection: Carefully examine the belt routing to ensure it matches the diagram in your repair manual.

* Rotation: Start the engine briefly to check for any squealing or slipping – this indicates a problem with the belt or tensioner. If there are any problems, turn off the engine immediately.

Important Considerations:

* Tensioner type: Tensioners come in different forms (hydraulic, spring-loaded, etc.). The method of releasing tension varies, so your repair manual is key.

* Belt routing: The belt path is crucial. Incorrect routing can lead to premature wear or failure.

* Tools: You may need specific tools, especially a tensioner tool, depending on your vehicle's design. A helper is also recommended.

* Safety: Never work on a car with the engine running. Use jack stands and chocks to ensure safety.

If you are not comfortable performing this repair yourself, it's best to take your vehicle to a qualified mechanic. Improper installation can lead to damage to the engine and other components.

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