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  1. #1
    Platinum Member jas67's Avatar
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    May 2008
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    985
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    Central PA
    Tractor
    Kubota B7610 + Kubota G1800-S

    Default Battery repair -- epoxy or silcone caulking

    The battery hold down is missing on my kubota G1800 garden tractor (came that way from the PO). It was held in with a rubber tarp strap that seamed to be doing the job, so I never bothered to get the proper hold down.

    The battery on this tractor sits right in front of the PTO pulley on the back of the engine (engine in backwards with "Front" and radiator toward operator).

    To make a long story short, the battery got chewed up by the pulley, and has two small holes in it. It isn't damaged down to the level of the acid, but acid could slosh out on rough ground.

    This battery is only a year old, so I want to fix it.

    What does everyone here think would be better to repair it with, epoxy, or silicone caulking?

    Thanks,
    Jay
    '05 B7610 w/ LA352 FEL
    Everything Attachments Pin-on Pallet Forks, home-made FEL quick attach to swap between these forks and the bucket, Dual rear remotes, CCM Top-N-Tilt, Woods SB60 snowblower, 66" United box blade, 60" back blade (cheapo, old and rusty), 60" KK rake, Woods PHD w/ 9" auger, Yanmar RS1303 3pt tiller, Kubota Ballast box (came with the tractor), Farm Force Carry All.
    '9? G1800S, 48" MMM. 70's Troy Bilt Horse tiller with new 6.5HP briggs engine.

    The means justify the ends.

  2. #2
    Veteran Member Treemonkey1000's Avatar
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    Jan 2008
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    1,894
    Location
    Renton, Washington
    Tractor
    Kubota L3750

    Default Re: Battery repair -- epoxy or silcone caulking

    Epoxy would be the first choice if you are bound to do it that way. Although you might want to cover the holes so with saran wrap or something so that the epoxy doesn't mix with the acid. If you have fiberglass resin that might work. rough up the battery case a little to get the stuff to stick. Maybe plexiglass to cover the holes and then a bungee cord?
    You are going to fix it so the battery doesn't re-injure itself aren't you?
    1st Peter 1:6-9

  3. #3
    Silver Member
    Join Date
    Dec 2008
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    213

    Default Re: Battery repair -- epoxy or silcone caulking

    My gut instinct would have been to say Epoxy but a quick google shows that epoxy is only resistant to Sulfuric acid to about 75 degrees Fahrenheit Epoxy - Chemical Resistance

    I didn't find any similar data on silicone caulk, but did see a couple of articles stating that it is resistant to hydrochloric acid in pickling tanks used for removing firescale from cast metals.

    Also, a quick idea for your battery hold-down: On both my Tracker and Aztek the battery hold-downs were broke from the previous owners. I replaced them with a piece of aluminum or steel flat stock with a piece of angle riveted at each end at the width of the battery and used bent pieces of all-thread with wing nuts on the straight end to hook into some holes in the area and tighten the aluminum flat down.

  4. #4
    Old Timer Soundguy's Avatar
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    Mar 2002
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    51,758
    Location
    Central florida
    Tractor
    ym1700, NH7610S, Ford 8N, 2N, NAA, 660, 850 x2, 541, 950, 941D, 951, 2000, 3000, 4000, 4600, 5000, 740, IH 'C' 'H', CUB, John Deere 'B', allis 'G', case VAC

    Default Re: Battery repair -- epoxy or silcone caulking

    they make epoxy sticks specifically for applications like lead acid batteries, and gas tanks.. etc.

    I'd get one and salvage the battery AND tie it down correctly.

    soundguy

  5. #5
    Platinum Member jas67's Avatar
    Join Date
    May 2008
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    985
    Location
    Central PA
    Tractor
    Kubota B7610 + Kubota G1800-S

    Default Re: Battery repair -- epoxy or silcone caulking

    Quote Originally Posted by Treemonkey1000 View Post
    You are going to fix it so the battery doesn't re-injure itself aren't you?
    Absolutely.
    '05 B7610 w/ LA352 FEL
    Everything Attachments Pin-on Pallet Forks, home-made FEL quick attach to swap between these forks and the bucket, Dual rear remotes, CCM Top-N-Tilt, Woods SB60 snowblower, 66" United box blade, 60" back blade (cheapo, old and rusty), 60" KK rake, Woods PHD w/ 9" auger, Yanmar RS1303 3pt tiller, Kubota Ballast box (came with the tractor), Farm Force Carry All.
    '9? G1800S, 48" MMM. 70's Troy Bilt Horse tiller with new 6.5HP briggs engine.

    The means justify the ends.

  6. #6
    Elite Member ToadHill's Avatar
    Join Date
    Oct 2005
    Posts
    2,711
    Location
    Catt county New York
    Tractor
    Kioti DK35, Ford 8N, Oliver Cletrac

    Default Re: Battery repair -- epoxy or silcone caulking

    Years ago when I worked in a repair shop, if we had a "weeper" we'd repair it with roofing tar. If the other options don't work give that a tay.
    I can't control my day but I can control my attitude.

  7. #7
    Platinum Member woodchuckie's Avatar
    Join Date
    Jan 2005
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    630
    Location
    Moundville,AL
    Tractor
    KUBOTA L 2800

    Default Re: Battery repair -- epoxy or silcone caulking

    I used epoxy on the one in my truck and it lasted till it fell into the radiator fan again. Worked great. I turned it on its side to keep the acid off of it while I made the repair.

  8. #8
    Super Member
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    Aug 2004
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    5,177
    Location
    North of Mtl,Que,Can (Ste Adele)
    Tractor
    MT180D

    Default Re: Battery repair -- epoxy or silcone caulking

    I slit a brand new battery case and asked the battery shop what they would suggest for a repair.
    Was told nothing would repair the plastic case and that I would need to purchase a new one.
    Determined, I eliminated epoxies as they don't adhere to PVC.
    Recalling that auto windshields are mostly glued to the steel frame on most autos and that the adhesive is urathane I tried some urathane household caulking (FLEXTRA tm.) and glued a patch over the hole after thoroughly cleaning the site.

    That was 2 years ago and as of a couple of days ago it is still holding just fine.

    Polyuratane adheres to just about anything and being a plastic base is acid proof.

    Auto parts carry the window adhesive in tubes for about the $10.00 range.
    Flextra is less than $5.00/tube (I had the flextra on hand)

  9. #9
    Old Timer Soundguy's Avatar
    Join Date
    Mar 2002
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    51,758
    Location
    Central florida
    Tractor
    ym1700, NH7610S, Ford 8N, 2N, NAA, 660, 850 x2, 541, 950, 941D, 951, 2000, 3000, 4000, 4600, 5000, 740, IH 'C' 'H', CUB, John Deere 'B', allis 'G', case VAC

    Default Re: Battery repair -- epoxy or silcone caulking

    Quote Originally Posted by PILOON View Post
    Determined, I eliminated epoxies as they don't adhere to PVC.

    Some do.. they make an epoxy stick -specifically- for lead acid battery repair.

    soundguy

  10. #10
    Veteran Member
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    Feb 2008
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    Orstraya , Ex convict stock , G'day .

    Default Re: Battery repair -- epoxy or silcone caulking

    Do as i have done many times , cut a piece from a lug or a non important protrusion on the battery . Clean the tip of a soldering iron so it is clean Copper and melt the piece into the hole . Melt the surrounding area a little with the tip and then add the filler , just as you would with Oxy welding . It will bond perfectly and never leak .

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