1. Gather Tools and Parts:
- Replacement alternator belt (check your owner's manual for the correct specification)
- Socket wrench set
- Breaker bar
- Jack
- Jack stands or ramps
2. Prepare Your Vehicle:
- Park your Volvo on level ground, apply the parking brake, and turn off the engine.
- Allow the engine to cool down if it has been recently running.
- Engage "Park" (automatic transmission) or "1st gear" (manual transmission) to secure the vehicle.
3. Raise the Vehicle:
- If you are working on a level surface, you can skip this step. However, if there is limited clearance underneath the front of the car, you will need to raise the vehicle.
- Place the jack under a suitable lifting point at the front of the vehicle (check your owner's manual).
- Securely set up jack stands or ramps to ensure stability.
4. Remove the Serpentine Belt Cover:
- Locate the serpentine belt cover in the engine bay. It is usually made of plastic or thin metal.
- Unscrew the bolts or fasteners that hold the cover in place.
- Remove the serpentine belt cover to expose the alternator and drive belts.
5. Release Tensioner:
- Identify the belt tensioner pulley. It is usually located near the alternator.
- Use the socket wrench and/or breaker bar to turn the tensioner counterclockwise. This will release the tension on the alternator belt.
6. Remove the Alternator Belt:
- Once the tension is released, you can easily remove the alternator belt by slipping it off the pulleys.
- Set aside the old belt for recycling.
7. Install the New Belt:
- Take the new alternator belt and align it correctly on the pulleys. Make sure the belt is seated properly.
- Reapply tension on the belt by turning the tensioner pulley clockwise until the belt is snug but not overly tight.
8. Reattach the Serpentine Belt Cover:
- Reinstall the serpentine belt cover. Secure it with the bolts or fasteners you removed earlier.
9. Lower the Vehicle (if raised):
- Carefully lower the vehicle back to the ground if it was raised. Remove the jack stands or ramps.
10. Test the Belt:
- Start the engine and let it run for a few minutes. Check for any unusual noises, vibrations, or slipping of the belt.
11. Double-Check:
- Visually inspect the alternator belt again to make sure it's properly seated and tightened correctly.
12. Clean Up and Dispose:
- Clean up the work area and dispose of the old alternator belt responsibly.
Remember that specific steps and bolt sizes can vary depending on the exact model and year of your Volvo 940. If you are unsure about any part of the process, it's best to consult your vehicle's owner's manual or seek assistance from a qualified mechanic.
