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HardwareItem # BD500217
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Video of Replacement Screw and Nut Kit for 12000-lb Capacity Bulldog Jacks
Videos are provided As a guide only. Refer To manufacturer
installation instructions And specs For complete information.
Today we're going to be taking a look at the rebuild process of the bulldog square 10,000 pound lift, 12,000 pound static capacity jacks. Now these you'll most often see on the front of very large utility trailers and even some fifth wheel campers. There are several kits available to help you along with your rebuild process. Here we'll have our internal screw, thrust washer, bearing, and pens. This is part number BD500217. Just the bearing itself is part number BD001015.
And we're also gonna have our gear, bushing, and spring replacement kit. Now that gear kit is part number BD500212. There are also two types of handles available, one being the vertical, which you see here. This part number is BD015181. We also have a horizontal option available, I'll explain to you the difference in those in just a minute. That part number is BD800090. The first thing we need to do is remove the cap located here on top.
That's gonna be a five sixteenths inch socket or bit driver. So it's just gonna come out, and we'll have one of those on each side. Once we pull that off, you'll see inside we're gonna have a lot of grease and hidden in there will be a few gears. At this point we need to get in here and just get this grease out. We're gonna be replacing it.
You just need basically a universal grease, it doesn't have to be anything high-temp or anything like that. Just get as much of it out as we can. It's gonna give us a good look inside. What we'll need to do is slide the spring over just like that, and you see how that pin slides out That's the pin that holds the shaft in place side to side. So we'll remove that and set it aside. It's gonna allow us to pull the shaft out and we'll just kind of compress our spring a little bit, be able to pull that out.
With that out of the way, you see that gear's gonna come out. Set it aside, inside out each outside tube there you're gonna have the bushes. Pull those out. Then the main gear on the bottom, we should just be able to lift straight up on that and we can remove it. You also see the pin for that right below it. And here we'll see washer, we can take out. Now that's gonna be all the components that're in the gear and spring kit, so if that's all you need to replace, you just put those back in at this point and your job's gonna be done. If you need to go further that, if you need to get to the bearing or if you need to get to the screw, now we need to separate the outer tube from the inner tube of our jack. So lift up on that, it's gonna give us access here. Here you see the bearing, again that's the part that is available individually or as the entire screw kit, so we'll set that aside. Here's our thrust bearing, now our pins. These are just gonna slide out by hand. All of this comes apart really without too many tools. And at that point, we're able to lift that screw mechanism right up and out. Now we would bring in a replacement, as you would see put a little bit of grease on it, our replacement would drop right down in. Then we'll need to place our pins back in. Then you can take your replacement thrust bush and put that down on there, our bearing's gonna sit on top. Now it's important to position the bearing so that this opening is facing downward. That's gonna help protect it from any moisture and help any rain that might get in there run off. Once we've got this in place, it's time to put our outer tube right back on. And as we do it, we'll see the screw come through the top. Now your washer that you took off the bottom of the other thrust bearing, that goes on. Now the larger of the pins that're included in the gear and spring kit needs to slide through the whole that we've got in the top of the screw. You just kind of want to center that on your screw and then you'll be positioning your large gear right down on top of that. You want that pin to sit in those two slots. Now we'll be bringing the handle bushings through each side just like that. Now our gear for this side is gonna sit down in there, gonna make sure those teeth line up. And then we need to slide in the crossbar where the main handle is. And you just want to make sure the hole, see that smaller hole It's gonna be offset to one side. Make sure that's on the same side as your gear. Now before this fully passes through, we want to get our spring in place, so you bring your new spring in. And we need to kind of get that compressed so it'll slide over the end of that gear and then line up with our handle bushing on the other side. Then we just push this clear through. Now if we compress our spring, we just want to line up that hole with the hole in our gear, place our pin in, and then you see how that spring kind of goes along that bottom side All we'll have to do is push this down until the top side clicks in. Just like that. And you can see at that point, we're back fully operational, it's just time to fill this up with some grease. Now you can do that now since you have access, or you also have the two grease circs on the side, definitely recommend doing it beforehand though. Now we'll just take again a little bit of all-purpose grease, this is a high-temp grease, it doesn't have to be. Want to make sure we get plenty in our gears there. The good news is, you're not gonna be able to over grease it so get plenty in there and that should keep everything lubricated. At this point, we can put our cap back on. Now depending on your situation, you may have a pair of these with a bar running between. You'll want to put your bar on going over to the slave jack. We do have two different handle replacements available. This one's a vertical handle replacement, which means the connection point here is gonna be vertical. It's gonna be up and down. So to replace the handle, that's gonna be placed on there. So we've got a bolt with a flat washer, we want to slide that through. Flat washer on the other side, and then this lock nut, you just want to get it down so it makes contact with the outside. So that's gonna allow us to rotate our jack up and down, and then to store it, since what happens is you're gonna pull out and then allow that to rotate down. Now a vertical handle position is going to allow us to bring the handle over to the front side of our jack, and we can use a handle keeper part number BD500312. You can weld it on. Now if you want this to be on the side of the jack rather than in front, we need to switch over to the horizontal handle. Instead of these begin up and down, they're gonna be side to side which would then allow us to tuck our handle alongside of the jack. And that'll complete our rebuild of the bulldog 10,000 pound lift capacity jack. We hope this'll show you that with just a few parts and a few tools, you can rebuild your bulldog jack rather than having to do a complete replacement.
Average Customer Rating: 4.8 out of 5 stars (23 Customer Reviews)
by: Jeff G.06/21/2015
I had a 12000 # bull dog jack that striped the nut. Not wanting to buy a new jack I searched all over for parts to the point of calling cequent performance parts. They informed they could not sell to me but helped me find what part # needed and instructed me to go to etrailer and put the part # in. I found the site put my part # in and the screw and nut kit popped up instantly. I made my order with no problems and received an email shortly after of my order letting me know that they received it. Another email after it shipped and one more upon delivery. The part was more than needed because they would not just sell the nut, I had to buy the whole kit. The directions were not helpful at all, but it was an easy removal of the old screw and the new part was a perfect match and they provided new pins spacers and a bearing. The whole removal and replacement of the screw and nut kit took about an hour and was straight forward once I tore into it. I was pleased with every thing and I will use etrailer again for all my parts in the future. 206062
by: Ryan F04/21/2014
Excellent Customer Service!!! The part was great too. Thanks for upgrading my shipping at no charge, helped to get our trailer back to work a few days early. Great job etrailer.com, many business could lean from your great communication with customers. I will be a return customer, as well all my friends. Sincerely, Ryan F. 126067
by: DOUG D.09/03/2016
The product was fine worked and did what It needed. the supplier of the product to etrailer was poor. took more then 4 months to get parts. the rep's from e-trailer were great they kept me informed of what was going and on and work well with us. 290891
by: JLH04/12/2012
Great replacement with new pins, cheaper and faster than replacing with a new jack. Glad parts are available for these rather than having to cut off old and weld on new and throwing away old jack. Repaired in about 20 mins. 37027
by: Toby11/09/2012
Easy to order, but there is an 800 number for any questions. The product was good quality and just what I needed. Delivery was faster than expected, so this was a very good experience! 59135
by: Ben Washburn10/28/2013
These people do it right. Very helpful through the ordering process and keep in touch with you even after you receive the product. I'll be using them again. 105419
by: Dan09/28/2016
Good product and timely delivery with good service! This replacement part enabled me to get my trailer out of the shop and on the road again. Thanks 300931
by: Big Bale Co03/09/2015
Fantastic replacement parts. We even used them to repair a Stallion brand jack with very little change over. They are sturdy and well made parts. 177589
by: walt04/26/2012
staff was extremely helpful in getting me specific information regarding the product. They went above and beyond. 38450
by: Dave A.06/16/2016
I found your service excellent, product was exactly what I wanted and shipping was quick. Nice work! 261865
by: oscar science06/27/2015
great products,excellent service I just finish rebuilding my trailer jack ,it was easy and fast 207812
by: Gary H06/09/2017
I was glad to find this product installed with ease and didn't have to replace both Jack's 391140
by: Peter Q03/07/2016
Perfect fit, as described. Been using for 1 year now with no issues. 240087
by: Tim A11/07/2016
Replacement fit perfectly. One year later still working flawlessly. 314696
by: MarkT10/28/2016
Product arrived quickly and in perfect condition. No issues here. 311690
by: Andy C01/13/2011
works good this item made my old worn out jack work as good as new 5423
by: Brian hall02/14/2014
Excellent service. Product worked great. 116577
by: Mike02/15/2017
Easy repair parts fit perfectly ! 342096
by: Don08/28/2015
nice product at good price 222552
by: Buddy P.12/22/2014
Installation was easy. 166435
by: Russ09/07/2016
Great Service. 291941
by: Ed N12/12/2014
fast shipping 164364
by: mike meyer01/26/2017
good 335543
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