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Today we're going to show you how to install a typical leaf spring onto a trailer. What we have here is a typical 4 leaf spring on a 3500 pound axle. The first step involved is loosening this bolt here and this bolt here on the bottom and this top one we do not have to worry about for now. The next thing we have to do is loosen these U-bolts here. The nuts are on the bottom, so we loosen these out so we can get our axle away from the spring. What we're going to do first is take off this bolt and then we'll come around and do this one. We're going to let this spring down and our axle is going to hang down a little bit. What we did was keep the axle tight on the other side so it will come down some but it will take off most of the weight so that way we can do one at a time.
If the bolt is jammed in there a few whacks on the hardened bolt will be okay but we'll put the nut back on to protect the threads a little bit more. With the spring away you might as well take a moment to inspect the shackle links here, this is a part that is supposed to wear down over time. What you'll see is that this hole will become oval shaped as the weight sits on the trailer. This ones in pretty decent shape so we won't have to change it out, but if you see any hole egg shaped, its probably time to change it out. Now we'll re-install our spring bolts with a reversed procedure. What you want to do now is leave the outside spring bolts and mount our U-bolts into place. You want to leave this loose so you can have a little wiggle room. Since we have our bolts in place we can start tightening them down, we'll start with the U-bolts and we'll tighten them down equally. Basically we'll do a criss cross pattern then back and forth. The main object here is to tighten these down equally, one or two threads difference is not going to make that big of a deal, but it's what you want to aim for. Torque wise, you want to make sure the plate is bending up slightly, once you've done that then you're tight enough. Now we go back to our spring bolts and tighten those down. Now we'll repeat for the other side. There you have it, your spring install is complete.
Questions and Comments about this Video2693
Today we're going to be showing you how to replace the axles and suspension components on a common utility trailer. With our trailer on jacks we'll begin by removing the wheels. Now this application that we're going to be taking apart . here's our idler axle with no braking and our front axle with braking. Both of these axles will have the easy lube hubs, which means they're greasable without having to disassemble and repack. Next we'll go ahead and start disassembly. We'll need to remove the dust cap first.
Today on This Old Trailer, we are going to inspect and replace some shackle links. This part right here is a shackle link. And you can see here, we are actually moving it back and forth. That really should not happen. In fact, you can see if you pull it up how far the hole is worn out. Now, normally when you see a gap down here, it indicates that it is worn out too. That defiantly needs to be replaced. Now, we have the whole trailer on jack stands. And we have an additional jack underneath the axle just to help support it in case something moves around. To remove and replace them, you just have to remove these two bolts right here called the shackle bolts. However, this is a very old trailer and pretty much everything is rusted together. So at this point, we are just going to have to cut them off and start over new. We will go ahead and double check the equalizers as well. 0:51
Today on This Old Trailer, what we will be doing is replacing a broken leaf spring. In this case, the style of the spring is a slipper spring. The first thing we need to do is take off our wheel, which we have already done. We will go ahead and point out the problem. You see this edge on the top leaf of the spring, it used to be right down here, connected in one piece. :33