Today were going to take a quick look at the Atwood A-frame under mount trailer Coupler part number 82680. Now this coupler is an under mount design. Its designed to sit on the bottom of youre a-frame trailer. Youll fit it to the bottom and then weld along these edges against your trailer frame. Theres a hole here cut for the jack as well as a hole down here and threaded holes for the bolts. Now well go over the latching mechanism.
To open the latch well lift up and pull back. What this does underneath is pulls the wedge that sits behind our ball up and away to allow the ball to come out of the coupler. Theres a hole here that we can use the coupler lock to prevent opening this latch. This will help make sure that the trailer doesnt come undone while youre pulling it down the road but also to help protect it when storing it. Underneath well show you how the mechanism works.
Heres a wedge that sits on the back of the ball and keeps it from coming out of the coupler. On top well lift our latch and slide it back and that wedge moves out of the way. Now we got a two and five sixteenth ball with us so we can show you how it works with an actual trailer ball. Fit the ball into the socket, well push our latch forward and the wedge comes down securing the ball. Well lift our latch and slide it back and the ball comes free.
Well take one quick measurement the overall length of our coupler is about 13 inches. Its finished in a black paint but it can be repainted to match your trailer. Thats it for a quick look at the Atwood A-frame under mount trailer Coupler part number 82680.
This Old Boat Trailer: Master Cylinder Installation
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
This Old Trailer: Installation of a Trailer Coupler
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
Replacing A Hydraulic Coupler Demonstration
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.
