Today were going to take a quick look at the Bulldog collar lock Coupler with high profile latch part number bd028386. Now Bulldog covers this coupler with a limited five year warranty. It has a gross trailer capacity of 7,000 pounds. Its designed to be used with two inch trailer balls and 50 degree A-frame trailers. It also has the standard configuration for mounting a jack and a large center hole for the body of the jack as well as three slotted holes for the hardware to secure it. Now this is a weld on coupler so youll just weld along the edges of the coupler to secure it to your trailers frame.
Now were going to over the latching mechanism and show you how it works. Theres a pin in the latch that keeps it from being opened unintentionally. Youll need to remove this pin in order to open the coupler. You can also replace the pin with a coupler lock that prevents the latch from opening again securing your trailer when traveling down the road but it also helps protect against theft when storing your trailer for the winter. So first well remove this pin so we can operate our coupler.
As we pull this latch open its going to pull back on our linkage sliding the collar back and then the hinge jaw on the coupler head will open up. The jaws spring loaded so its going to come open automatically and it provides a shoulder for the collar to rest against so that it wont close. To close it well hold the collar back, close the jaw and let the collar slide forward. Now weve got with us a two inch trailer ball so that we can show how it works with an actual ball. Again well pull the latch back and the jaw pops open.
We can then fit our ball into the socket. Well hold our collar back, close the hinge and let the collar slide forward onto the jaw. Now our ball is secure and completely captive but its got enough movement that the trailer will track smoothly behind the tow vehicle. Well pull our jaw open, our balls release and our trailers unhooked. Thats it for a quick look at the Bulldog collar lock Coupler with high profile latch part number bd028386..
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.