Lawn Tractor Problems

[mroper]

Wont some type of JB weld seal it

 

[Vaquero]

Wont some type of JB weld seal it

I used regular jb weld on a hdpe diesel tank.
It's been holding about a year now.

 

[1911'S 4 Me]

Use the magical tape in the television infomercials.

 

[oldag]

If a plastic gas tank is cracked, you can bet the rest of the tank is deteriorated just as badly. The molecular structure of the material has lost it's 'plasticity'. And no longer has any structural integrity.

Unless there was an impact, or poor design that created a stress riser, you could be correct.

 

[Younggun]

Super glue only works on certain types of plastic. Super glue is just an acid. It doesn't react to all plastics. I plastic weld with a screwdriver tip heated to cherry and don't use filler. My repairs are not structural or visible.

It’s not just an acid. It’s acid stabilized, but that’s to keep them from going bad before use. It also means CA glues won’t cure well on acidic surfaces. Extremely dry materials can also cause some issues, which may be a problem for certain plastics. Especially old, dry, brittle plastics.


Epoxy as others have mentions will probably work well and slower drying epoxies tend to be more flexible. But surface prep would be key for a good bond. They tend to be fairly fuel resistant.

 

[oldag]

But surface prep would be key for a good bond.

Gospel truth for any bonding operation. Cleanliness is next to godliness.

 

[Axxe55]

Patching or repairing a fuel tank is a sketchy deal any way you go about doing it, or regardless of the method used, especially with a plastic fuel tank. I would only suggest as means of a temporary repair, or in the case a replacement could not be found. If possible, I'd replace the tank. Also need to determine what caused the tank to fail. Was it just old age and the tank was brittle? Was it rubbing on something that caused the failure? Was something thrown at the tank causing the failure?

 

[Younggun]

Patching or repairing a fuel tank is a sketchy deal any way you go about doing it, or regardless of the method used, especially with a plastic fuel tank. I would only suggest as means of a temporary repair, or in the case a replacement could not be found. If possible, I'd replace the tank. Also need to determine what caused the tank to fail. Was it just old age and the tank was brittle? Was it rubbing on something that caused the failure? Was something thrown at the tank causing the failure?

Wrap that fucker in fiberglass and resin

 

[Axxe55]

Wrap that fucker in fiberglass and resin

Having done my fair share of boat and Corvette repairs over the years, I refuse to do fiberglass anymore.

 

[candcallen]

Having done my fair share of boat and Corvette repairs over the years, I refuse to do fiberglass anymore.

Having SEEN fiberglass repair ONCE, I refuse to do fiberglass repair EVER!

 

[Axxe55]

Having SEEN fiberglass repair ONCE, I refuse to do fiberglass repair EVER!

Fiberglass gets everywhere, regardless of how well you are covered up to try and keep it off you.

 

[Younggun]

I've used it in a few RC projects. Typically it's not too bad as long as you are ready for what you want to do when you start and have VERY sharp scissors. Dull scissors pull and fray the fabric. Only handle the fiberglass to cut as needed then set aside. Mix resin, and once you mush the fiberglass cloth in the resin the fibers are pretty much trapped. Lay it out as needed, scrap excess resin, let it cure, and brush on extra layers or add another layer of fiberglass if needed.

Trying to do a fiberglass form....never messed with that and probably much worse.

 

[oldag]

Having SEEN fiberglass repair ONCE, I refuse to do fiberglass repair EVER!