L2850D Metal Fuel Tank Repair

[Russell King]

Good Information.
I priced a new tank and a Kubota dealer said none available with the old price at $1000 so I called around to find another dealer that found a few in stock with a price now of $1700 + shipping. (New Vendor)
I hope the patch works...

Exactly why I patched mine also. Mine only had holes in the bottom so I was thinking to just cut the bottom off an inch or two to eliminate the radiused corners and then weld a new plate to replace the bottom. But so far so good (knock on wood)

Good luck with your repair hope it works.

 

[North Idaho Wolfman]

Sealing from the outside is not a good option, you really need to use the POR-15 on the inside of the tank.
It will coat the entire tank and seal up any leaks.

 

[JimmyJazz]

Sealing from the outside is not a good option, you really need to use the POR-15 on the inside of the tank.
It will coat the entire tank and seal up any leaks.

Its the horse to water thing.

 

[L275]

I didn’t know they made a thicker patching compound. Do you have to be as meticulous as with their paint in the preparation? Do you have to topcoat it with another paint?

I sanded the affected area and cleaned it before the application and it has held up well...so far . (No Leaks) No Top Coat Needed!

Instructions say... "(Since Por Patch actually bonds chemically to metal, the underlying surface does NOT have to be sanded before application. As long as loose or flaking rust is removed from the surface, an application of Por Patch will not only cover up the rust and prevent it from spreading, but will strengthen the underlying metal and seal holes by forming its own membranes."
POR15 PATCH is said to be "impervious to gasoline, oil, chromic acid, hydrochloric acid, phosphoric acid, sodium hydroxide, caustic soda, 50% sulfuric acid, 50% hydrofluoric acid.)"
I have used a 2 part product made by Interlux (Red Hand) on large fuel tanks before but wanted to try this 1 part product after seeing the application description.

 

[Russell King]

Good luck with the repair. I hope it holds up for as long as you have the tractor