Here's a general overview of the process, but remember this is *not* a substitute for a proper repair manual:
1. Preparation:
* Safety First: Disconnect the battery's negative terminal to prevent accidental electrical shorts. Wear safety glasses and gloves.
* Gather Tools: You'll likely need a variety of tools, including screwdrivers (Phillips and flathead), possibly Torx drivers, possibly a rivet gun or pop rivet removal tool, putty knife, window sealant, and potentially a window installation tool.
* Acquire Replacement Window: Get the correct replacement window for your specific van model and year. Using the wrong window will lead to problems. Consider getting a quality replacement rather than a cheap one.
* Remove Interior Trim: Carefully remove the interior trim panels surrounding the slider window. This often involves unscrewing screws and possibly popping plastic clips. Take your time and note how things come apart to make reassembly easier. Take photos as you go.
2. Removing the Old Window:
* Detach the Window Mechanism: This involves disconnecting the window's rollers and tracks. The exact method depends heavily on your van's model. Your repair manual will be essential here. You might need to remove screws, bolts, or clips.
* Remove the Window from the Track: Once the mechanism is disconnected, carefully slide the window out of its track.
* Remove Sealant: The old window will likely be sealed with butyl tape or another type of sealant. Carefully remove this old sealant using a putty knife. Be gentle to avoid damaging the van's body. A heat gun can soften the sealant to make removal easier, but be cautious not to overheat the surrounding parts.
3. Installing the New Window:
* Clean the Window Channel: Thoroughly clean the window channel and the surrounding area where the new window will sit. This ensures a good seal. Remove any remaining old sealant residue.
* Apply New Sealant: Apply a bead of new window sealant (butyl tape is commonly used) to the window channel according to the instructions on the sealant and/or your repair manual.
* Install the New Window: Carefully slide the new window into the track, ensuring it's properly seated and aligned.
* Reattach the Window Mechanism: Carefully reconnect the window's rollers and tracks, making sure everything is securely fastened.
* Reinstall Interior Trim: Reinstall all the interior trim panels, ensuring all screws and clips are securely fastened.
4. Testing:
* Test the Window: After reassembly, test the window's operation to make sure it slides smoothly and closes securely. Address any issues promptly.
Important Considerations:
* Year and Model: The exact procedure varies greatly depending on the year and model of your Ford van.
* Repair Manual: A repair manual specific to your van is indispensable.
* Professional Help: If you're uncomfortable with any part of this process, it's best to seek professional help from a qualified auto glass repair shop. Replacing a slider window incorrectly can lead to leaks and other problems.
This is a simplified overview. The actual process is significantly more complex and requires careful attention to detail. Always refer to your vehicle's repair manual for specific instructions.