Today were going to look over the Bulldog cast head coupler with wedge latch part #: BDA200C0317. Bulldog covers this coupler with a limited five year warranty. It has a gross trailer weight capacity of 8,000lbs and its designed to work with 2 inch trailer balls. Now on the back of this coupler theres a pair of bolts that will be used to mount this coupler to a channel bracket that you might already have on your trailer. The bracket will look something similar to this. Now well measure the outside width here of the coupler head so you can make sure it will be compatible with your bracket.
The outside width is about 2 7/8 inches. Now we want to go over the way the live system works with this coupler. Theres a handle here and a trigger latch below. Youll need to lift the trigger latch in order to pull the handle up. When you pull the handle up it opens the socket below so you can get the ball in or out.
The handle system is spring loaded so when you release it, it will lock back into place. Theres a hole here that you can use a coupler lock with. That coupler lock will prevent the handle from coming open while youre trailering down the road. It will also help protect your trailer against theft while you might have it in storage. If you hold the handle up that hole also lines up with two notches here so you can use the coupler lock pin to hold it opened while youre hooking or unhooking your trailer.
Now well take a look below, heres our ball socket area and heres a wedge. This wedge butts up against the backside of the ball to secure it and keep it from coming out of the coupler. As we open the latch that wedge moves up and away to allow enough room for the ball to move in or out. Now we got a 2 inch trailer ball with us, so well show you how it works with the ball. Well open our latch and the wedge moves back.
Take our ball, fit it into the socket and we can let the latch and the wedge moves forward against the ball holding it into place, though allows enough room for the ball to move nice and freely so that you dont have to worry about the trailer binding up behind the tow vehicle. Well open the latch and our ball will be freed. And thats it for our quick look at the Bulldog cast head coupler with wedge latch part #: BDA200C0317.
Today on This Old Boat Trailer we are going to rebuild the hydraulic actuator on here and we are going to be using part number 85841, the master cylinder itself, and then we are going to use a master cylinder replacement cap part number A87478, and the cable push rod replacement kit part number 85852, all from Atwood. The first thing we need to do is remove the old master cylinder itself. This is going to require taking off the cap which we have already done. We have disconnected the line back here already and then we can see our factory line, lets disconnect that and then we are just going to undo these four bolts right here. There is probably going to be some leftover brake fluid in there so it will be a good idea to wear some gloves or something. We are going to pull out the back and then underneath there is a little push rod you may want to pull away from it too to help knock it out. 01:09
Today on This Old Trailer we are going to install a brand new coupler using part number 2836AT from Master Lock. This is going to be a three inch wide coupler on it and in between here is going to be three inches wide and it is going to use a two inch ball. The first steps involved are to remove the old coupler. It has been on there for awhile. It is rusted so take a couple of wrenches to it and maybe we will get lucky and we will actually break the bolts and get it to come loose that way. This little stand right here got bent back, probably pinching the coupler, so we are going to take that one apart too. Obviously this is rusted in place so we are going to have to persuade it off. 00:59
Today we are going to show you how to replace a hydraulic coupler. In this case this one is damaged and is going to get replaced by a totally different model. First thing we are going to do is actually drain all the fluid from the master cylinder. And what we are actually going to do is open up one of the wheel cylinders and pump our fluid out and into a holding container. All right we will go to the wheel cylinder now and attach a rubber line to the bleeder valve and get our container ready. What we will do is take the cover off our bleeder valve here and we will go ahead and open it up. Okay, here we just take a rubber hose and just slide it on to the bleeder valve itself. All right and then we will just run the other half of the hose into an empty container here and start draining the fluid out of the master cylinder.