howsahemi
New member
Anyone else have problems with the old school gas caps? One of the plastic tabs are broken and now the cap won't seal. Are there any solutions other than obtaining another used gas tank?
Rustman
New member
if you knew someone slick at plastic welding you could use a newer screw on type. Just cut the old one out and have a new one welded in. Never tried it but it should work.
Vmax540
VIP Member
New tank.
F.Y.I. depress latch with one hand then gently push lid closed with the other hand. I have seen too many slam the lids.... same riders that use the (hand slap) Kill switch as an off key.....
F.Y.I. depress latch with one hand then gently push lid closed with the other hand. I have seen too many slam the lids.... same riders that use the (hand slap) Kill switch as an off key.....
The captive lid 1980 -1997 fuel caps are superior in every way to the late model screwed lids. I am cutting the filler neck from my apex in order to plastic weld the filler from an older machine on. It is usually exposure to sunlight causing damage to older snowmobiles before parts wear out.
Vmax540
VIP Member
Vmax540
VIP Member
http://www.vintagevmax.com/vvforum3/viewtopic.php?f=2&t=1529&p=5633#p5633
You cannot repair a damaged polypropylene gas tank with epoxy or a plastic tank repair kit, because gasoline will quickly dissolve the epoxy and the leak will reappear. Polypropylene is a thermoplastic, which means that you can use heat to melt the plastic and create a permanent repair in the polypropylene gas tank. To heat the polypropylene, you need to use a specialized tool that has a controlled heat output. This reduces the chance that you will scorch the surface of the gas tank, which will result in an ineffective repair.
Instructions:
1. Drain the gasoline from the polypropylene gas tank and remove the damaged polypropylene gas tank from the vehicle, per the vehicle's repair manual, with the mechanic's tool set.
2. Remove any gasoline residue from the gas tank by pouring 1 pt. Of acetone into the damaged gas tank, swirling the acetone around in the gas tank and pouring the acetone into the 1-gallon plastic bucket.
3. Pour a small amount of acetone on a clean rag and wipe the damaged area of the polypropylene gas tank to remove gas residue from the outside surface of the gas tank.
4. Allow the gas tank to dry thoroughly before proceeding.
5. Plug in the plastic welder, turn the heat control knob to 575 degrees Fahrenheit and set the plastic welder aside to preheat.
6. Set the polypropylene gas tank with the damaged area facing up.
7. Place the speed tip against the damaged gas tank. When the surface of the damaged area starts to melt, drag the speed tip across the damaged area to tack-weld the surface of the polypropylene.
8. Align the speed tip with the start of the tack weld, slide a length of polypropylene filler rod into the speed tip, and push the filler rod into the melting tack weld.
d the surface of the gas tank.
10. Clip the polypropylene filler rod with the side cutters when you reach the end of the tack weld. Slide the speed tip over the cut filler rod to fuse it to the surface of the gas tank.
1. Lay multiple passes of filler rod if the damaged area of the polypropylene gas is wider than one width of filler rod.
12. Allow the welded area to cool thoroughly before you reinstall the gas tank in the vehicle.
-Restoration/Cleaning help
http://www.lexol.com/
You cannot repair a damaged polypropylene gas tank with epoxy or a plastic tank repair kit, because gasoline will quickly dissolve the epoxy and the leak will reappear. Polypropylene is a thermoplastic, which means that you can use heat to melt the plastic and create a permanent repair in the polypropylene gas tank. To heat the polypropylene, you need to use a specialized tool that has a controlled heat output. This reduces the chance that you will scorch the surface of the gas tank, which will result in an ineffective repair.
Instructions:
1. Drain the gasoline from the polypropylene gas tank and remove the damaged polypropylene gas tank from the vehicle, per the vehicle's repair manual, with the mechanic's tool set.
2. Remove any gasoline residue from the gas tank by pouring 1 pt. Of acetone into the damaged gas tank, swirling the acetone around in the gas tank and pouring the acetone into the 1-gallon plastic bucket.
3. Pour a small amount of acetone on a clean rag and wipe the damaged area of the polypropylene gas tank to remove gas residue from the outside surface of the gas tank.
4. Allow the gas tank to dry thoroughly before proceeding.
5. Plug in the plastic welder, turn the heat control knob to 575 degrees Fahrenheit and set the plastic welder aside to preheat.
6. Set the polypropylene gas tank with the damaged area facing up.
7. Place the speed tip against the damaged gas tank. When the surface of the damaged area starts to melt, drag the speed tip across the damaged area to tack-weld the surface of the polypropylene.
8. Align the speed tip with the start of the tack weld, slide a length of polypropylene filler rod into the speed tip, and push the filler rod into the melting tack weld.
d the surface of the gas tank.
10. Clip the polypropylene filler rod with the side cutters when you reach the end of the tack weld. Slide the speed tip over the cut filler rod to fuse it to the surface of the gas tank.
1. Lay multiple passes of filler rod if the damaged area of the polypropylene gas is wider than one width of filler rod.
12. Allow the welded area to cool thoroughly before you reinstall the gas tank in the vehicle.
-Restoration/Cleaning help
http://www.lexol.com/