Today were going to take a quick look at the Bulldog collar lock Coupler with high profile latch part number bd028463. Bulldog covers this coupler with limited five year warranty. It has a 12,500 pound gross trailer weight capacity. Its designed to work with 50 degree A-frame trailers. It has the standard cut and bolt pattern cut to mount a trailer jack. Now well show you how this jack operates.
It comes included with a pin that fits through the latch mechanism to prevent it from being opened. You can replace this pin with a coupler lock, sold separately, that will also secure the latch and prevent it from coming open while trailering down the road but itll also help protect against theft when you have your trailer stored. As for the mechanism well lift the handle, this collar slides back so that the spring loaded hinge jaw can open up and release the ball. Well lift our latch, the collar moves back and the jaw pops out. Well hold the jaw in and close the collar over it.
Now weve got with us a two and five sixteenth ball so well show you how it works with an actual ball. Pull our latch open. The hinge jaw pops open and it provides a little stop here for the collar to rest so you dont have to worry about it closing when youre hooking or unhooking your trailer. Weve got a two and five sixteenth ball that well fit into the socket. We can then close our jaw and let the collar close over it.
Now our ball is completely captive but it allows enough movement for it to track nicely behind eh vehicle. Well pull open our jaw and our balls free. Thats it for a quick look at the Bulldog collar lock Coupler with high profile latch for two and five sixteenth balls part number bd028463.
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.