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How do you repair 91 940 Volvo speedometer odometer?

To repair a 91-940 Volvo speedometer odometer, you will need the following tools:

* A Phillips head screwdriver

* A flat head screwdriver

* A soldering iron

* Solder

* A desoldering pump

1. Remove the instrument cluster from the dashboard. There are two screws on either side of the cluster, and one at the bottom in the center. Use a Phillips head screwdriver to remove these screws.

2. Once the screws are removed, gently pry the cluster out of the dashboard. There are a few clips that hold the cluster in place, so be careful not to break them.

3. Disconnect the electrical connectors from the back of the cluster. There are three connectors, one for the speedometer, one for the odometer, and one for the fuel gauge.

4. Remove the speedometer and odometer from the cluster. There are four screws that hold the speedometer and odometer in place, two on each side. Use a Phillips head screwdriver to remove these screws.

5. Once the screws are removed, carefully remove the speedometer and odometer from the cluster. Be careful not to drop them.

6. Inspect the speedometer and odometer for any damage. If there is any damage, you will need to replace the speedometer or odometer.

7. If there is no damage, you can begin to repair the speedometer or odometer.

To repair the speedometer:

1. Remove the faceplate from the speedometer. There are four screws that hold the faceplate in place, one in each corner. Use a flat head screwdriver to remove these screws.

2. Once the screws are removed, carefully pry the faceplate off the speedometer. Be careful not to break the faceplate.

3. Inspect the speedometer for any damage. If there is any damage, you will need to replace the speedometer.

4. If there is no damage, you can begin to repair the speedometer.

The most common problem with speedometers is that the needle gets stuck. This is usually caused by a build-up of dirt and debris on the gears. To clean the gears, you will need to use a cotton swab and some rubbing alcohol. Gently rub the cotton swab over the gears until all of the dirt and debris is removed.

Once the gears are clean, you can reassemble the speedometer. Start by placing the faceplate back on the speedometer. Then, replace the four screws that hold the faceplate in place.

To repair the odometer:

1. Remove the faceplate from the odometer. There are four screws that hold the faceplate in place, one in each corner. Use a flat head screwdriver to remove these screws.

2. Once the screws are removed, carefully pry the faceplate off the odometer. Be careful not to break the faceplate.

3. Inspect the odometer for any damage. If there is any damage, you will need to replace the odometer.

4. If there is no damage, you can begin to repair the odometer.

The most common problem with odometers is that the numbers stop turning. This is usually caused by a broken gear. To replace the gear, you will need to use a soldering iron and some solder.

First, identify the broken gear. The broken gear will be the one that is not moving. Once you have identified the broken gear, you need to remove it. To do this, you will need to use a soldering iron to melt the solder that holds the gear in place. Once the solder is melted, you can use a pair of tweezers to remove the gear.

Next, you need to replace the broken gear. To do this, you will need to use a soldering iron to solder the new gear in place. Make sure that the gear is aligned properly before you solder it in place.

Once the new gear is soldered in place, you can reassemble the odometer. Start by placing the faceplate back on the odometer. Then, replace the four screws that hold the faceplate in place.

5. Reinstall the speedometer and odometer into the cluster. There are four screws that hold the speedometer and odometer in place, two on each side. Use a Phillips head screwdriver to replace these screws.

6. Reconnect the electrical connectors to the back of the cluster.

7. Reinstall the instrument cluster into the dashboard. There are two screws on either side of the cluster, and one at the bottom in the center. Use a Phillips head screwdriver to replace these screws.

Test the speedometer and odometer to make sure they are working properly.