I have a 1979 F350 4X4 and I will be replacing the rear slider window with a more "Modern" slider with nice dark tint. (Ohhh Baby!)

What is the procedure to perform this operation and if I get some good answers I will gladly post pictures of the work for you truck **** addicts.

Thanks in advance!

 

Get a spray bottle with soapy water in it. Take a wide blade screw driver, or something similar, and from the inside pry back the rubber seal and as you pry it back squirt the soapy water under the seal. work your tool along the seal spraying as you go. I have even used my finger to slid along under the seal once you get it pried back , (however thats a good way to cut you finger if you hit a sharp spot). once you have gotten soapy water under the seal all the way around, start at one of the top corners and pry back seal once again and slowly push it out. Once it starts, go around to the outside and just pull it on out. If you are going to reuse the seal take a screw driver and go around the grove where the glass goes the make sure its free of dirt and junk. Putting it back in, set the bottom in first and work the seal seal around , use plenty of soap and water. Others may have a different method but I've done 6 or 8 like this it worked very well. By yourself you can do it in 15 or 20 min, with some help even faster..

 

x2 on the removal process. I usually just use two screw drivers and work the seal out.

As for install.. I grab a thin rope and soak it in soapy water. then I take the rope and set it in the groove in the new window seal so that the rope meets it self on the bottom of the window. Then set the window in the bottom groove. Pull the rope, GENTLY but FIRMLY!!! Ive installed plenty by my self but a helper on the outside of the truck is great! Pull the rope one one side and then the other. Alternate back and forth till you have pulled the gasket into the interior of the truck.

 

If this is the original seal, you may decide you don't want to reuse the seal, especially if it is dry and hard. A razor knife will make short work of the old seal.

I agree with the directions for installing the new window, except for one point. I would not use soapy water. It will be trapped under the rubber seal forever or until it rusts out, whichever comes first. I would use a silicone spray lubricant.

 

Replacing rear glass (also applicable to rear glass seal). This is what I would do so your technique may be different.

Removal:
1. From inside the cab, take a sharp utility knife and cut the seal to peel back about 6 inches to create a handle.
2. Using the length you just peeled back, pull the seal over itself. It should tear away all the way around the glass. Have a helper support the glass from the outside while you do this or open the sliding glass support the glass with your free hand.
3. Remove glass and take it to a work bench.

Cleaning /Preparation:
1. On your workbench, remove the old seal and use a single-edged razor blade to scrape away any rubber or old sealant.

2. Clean the glass with a good glass cleaner - the cleaner, the better.

3. Thoroughly clean the new window seal to remove the dry, powdery preservative.

4. Thoroughly clean the window frame opening.

5. The new window seal will have a seam. Mark the center of the glass and center the seam either at the top or bottom of the glass. I prefer the seam to be on the bottom.

Option 1. Install the window seal dry
Option 2. Install the window seal and then apply some butyl rubber or windshield sealant in the window glass groove and let it dry overnight.

Installation:
1. Using a length of strong nylon cord that is more than the glass' circumference, insert the cord groove all the way around in the window seal's body channel groove. Leave your self some extra length on both ends to use as handles. The cord is used to cheat/pull the inside lip over the window frame opening. I prefer each end of the cord to meet at center top.

2. Lubricate the seal with some soapy water so it won't get torn by the cord. The soapy water will also allow the seal to adjust itself to the window opening. Your call on using silicone.

3. Have a helper position the assembly in the body opening. It is easier if you can get the bottom of the window seal started over the lip.

4. While your helper applies even pressure from outside the vehicle, pull/draw one end of the cord perpendicular to the glass and over window frame opening until the entire seal is seated over the window frame opening. Remember to firmly hold the other end of the cord so that it does not slide of pull away from you.

Done.

 

Theses are excellent tips guys! I will keep you guys posted (And pix) on my progress when the window comes in. I ordered the glass on Sunday on line and it's being shipped from AZ and I'm in CA so hopefully next weekend I'll work on it.

 

Really? The water should evaporate quickly and be mice and dry. It's not like the water will be there for a year.

I have heard, but do not know for sure, that using a silicone spray lube allows the window to slide around and never completely seal since the spray does not evaporate.

I always use a rope and lots of Windex.