Today were going to take a quick look at the Redline A-frame Coupler part number ca5400. This couplers designed to work with standard 50 degree A-frame trailer frames. Its a direct weld on design where youll weld along the edge of the coupler to that trailers frame. Its designed to be used again with two and five sixteenth balls and it has an overall gross trailer weight capacity of 14,000 pounds and a towing capacity of 2100 pounds. Theres a built in jack mount with a large hole cut for the body of the jack and the threaded mounts for the bolt. Now well show you how this latch works.
To operate the latch well pull up and then back. Underneath it opens our wedge to allow the ball to move in and out of the coupler. We slide the wedge forward and the latch moves back into place. Weve got a ball with us so we can show you how that works with an actual ball. We lift up on our latch and slide the mechanism back.
Fit our ball into the socket, push forward on our latch and now our ball is captive inside the coupler. Lift the latch up, pull it back and the ball comes free. Now theres a hole here in the side of our latch that we can use with a coupler lock to secure the latch, prevent it from opening and also help protect against theft when storing the trailer. Thats it for a quick look at the Redlines A-frame Coupler part number ca5400.
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.