etrailer | Rebuilding a Bulldog 12000-lb Capacity Jack

[@marissachong3624]

I forgot to drop the foot of my welded-on Bulldog jack for my horse trailer. A couple over-turns later, I snapped the jack's shear pin. This was the ONLY video that could get this city girl to understand the mechanism well enough to fix it myself. THANK YOU. (No trailer repair company would fix it, and insisted I weld a new one on). I will note that I seem to have a significantly older model jack with the same lift/static capacity, so instead of a spring there is a solid roll (dowel?) pin. I could not find singular shear/this type dowel pins ANYWHERE and was short on time, so I ordered the whole gear kit referenced here. Wrong size for mine, but the one pin I needed fit! Literally 5 minutes later I had the jack cranking again. Thank you, Thank you!

[@etrailer]

We are happy to hear you were able to get it fixed! We are happy to help! Thank you for sharing this with us.

[@7430adam]

You produce the best thought out videos every single time and list all part numbers as you go. I'll buy from you first for these reasons. Super handy. Thanks and keep it up!

[@etrailer]

Thank you for the feedback! If you would like to see more information on this rebuild kit, check it out in the following link. www.etrailer.com/Accessories-and-Parts/Bulldog/BD001015.html

[@trevmint5615]

What about the return spring to lift the extension leg?

[@jeffsnyder2040]

Very helpful. Thank you. I had to replace the "foot" and the first inner sleeve (without removing the exterior mount since we have an electric motor and there were welds and other adjustements). I was a bit apprehensive about tearing into the project. This video provided excellent instruction and inspired me to quite procrastinating. Well done.

[@Brobro449]

Ours doesn’t have a pin in the bottom part that hold the threaded rod in the bottom or a spring across the wind handle and can’t seperate the 2 parts of the jack body

[@jeffstrains4014]

If you want to change the direction of the spring pin you pull to drop the pad will the leg unscrew or do you have to do this tear down? Mine is mounted with pin facing front of trailer would rather it face side? Thanks (This is due to wanting to mount a tool box in tongue and not block access to pad)

[@tudeddy7026]

What’s the part number on the spring at the bottom? To lift the leg

[@etrailer]

We have a replacement spring for your return jack leg in the following link. The part number is TJD-12000-RSP. www.etrailer.com/Accessories-and-Parts/etrailer/TJD-12000-RSP.html

[@tanneriselt2161]

What if you bent the innner tube and drop leg?

[@etrailer]

We do have replacement inner jack legs that allow you replace the lower half of the jack if it gets damaged or stops working properly. www.etrailer.com/Accessories-and-Parts/etrailer/TJD-12000SP-FIP.html

[@jmarburg1]

Is it possible for the welds supporting the gears to break?

[@etrailer]

I'm not exactly sure which welds you're referring to but I'd say it's always possible that any weld CAN break. But if it has anything to do with the gears I'd guess the teeth would likely wear down first.

[@behindthebarnreallife1064]

Great video. Very helpful

[@etrailer]

We are happy we were able to help. Check out more information on our website in the following link. www.etrailer.com/Accessories-and-Parts/Bulldog/BD001015.html

[@behindthebarnreallife1064]

etrailer.com thank you.

[@welderick1]

My jack will lower but won't hold a load or lift my trailer... I want to replace the parts without cutting the old one off and welding in a new one. what parts should I purchase?

[@etrailer]

I would start my opening the top of the jack to see what the gears look like. You may have a damaged set of gears. In this case you would replace them with the following kit. If you replace them, be sure to grease them really well. www.etrailer.com/Accessories-and-Parts/Bulldog/BD500212.html

[@bigDH123]

Now show that same procedure on a jack that has been pulled down salty winter roads for the past 12 plus years and see if it is still that simple, just saying.

[@jmarburg1]

How do you hold up the trailer while you take the jack apart?

[@etrailer]

A floor jack and jack stands

[@ReactorFour]

Mine is fully welded on, so to drop the inner tube / screw assembly it seems it would require the trailer to be very high in the air, like need a fork truck high, or a pretty deep hole to be dug and driven over to allow space to remove and replace the inner. It seems maybe you could get by only raising it enough for the inner to drop out and then separate the screw and then bring it out second, but I’d think that would still need to be way higher than a typical floor jack. Am I missing another easier solution maybe?

[@jmarburg1]

Can I use these replacement parts for a bulldog 10000 lb capacity jack

[@etrailer]

Actually that's exactly what they're for. They're for Bulldog jacks that have a 12,000 pound static capacity but a 10,000 pound lift capacity. Such as www.etrailer.com/p-BD182513.html www.etrailer.com/dept-pg-Trailer_Jack-gw-10000_lbs-pm-Bulldog.aspx