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Replaces the master cylinder for your Demco actuating brake coupler for disc brakes.
Features:
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Jeff: Hello, everybody. This is Jeff at etrailer.com. Today we're going to take a look at the replacement master cylinder for the Demco disc brake actuators. This is designed to fit the Demco brake actuators for disc brakes only and the reason is this master cylinder is designed to operate a brake pressure of 1500 PSI, which is the pressure for disc brakes. This will not work with drum brakes because it operates in the lower 1000 PSI pressure.Now this part does include everything shown here on the table. The composite master cylinder, the composite lid with the cork gasket, four mounting bolts that you put in there with washers to install it and then this automotive style diaphragm cap that screws in.
Now a few measurements on this, the bolt hole dimensions. In other words, these bolt holes right here. The measurement center to center. Three inches this way, two inches that way.And the overall dimension of the cylinder itself. Is four inches, like two and three quarter inches, but again when you do put this together, make sure your gasket gets on there.
Line it up there you have your four holes. Just use those to screw it down and then put your cap right on there. If you notice there is a sticker on this cap that says, "Do not use the fill plate if your outer case is threaded." So just a warning to pay attention to that sticker, but that should do it for the review on the replacement master cylinder for the Demco disc brake actuators.
Average Customer Rating: 4.7 out of 5 stars (19 Customer Reviews)
Replaces the master cylinder for your Demco actuating brake coupler for disc brakes.I’ve ordered from etrailer several times! It’s always delivered fast, packaged nicely, and reasonably priced. From brakes, bearings, to my recent master cylinder purchase. They have the parts to keep our trailer reliable for our cross-Country boating trips.
The new master cylinder is not cast iron like the original so it will never rust or pit up and the reverse solenoid was a breeze to drill and tap in. Justin W. from e trailer set me up with the perfect replacement. I’m one happy boater!
It is an exact fit, I tried to get the master cylinder from the company that made the trailer tongue and was told they don’t make them anymore, I was very happy To see this one bolt right in
Replaced the original DEMCO 5672 MC for a coupler assy that was 2 years old. Hope this one lasts longer.
Good Product. Was back ordered but they kept me informed and up to date via email. ETrailer is a great company to do business with.
I received my master cylinder in just a few days. This was a direct replacement and it all fit. I did watch a few of your videos and they were very helpful.
Robert
I swapped it out with the drum one and worked fine. Now I have disc brakes on my trailer
This replacement master cylinder was the exact fit. Just what I was looking for.
Exact part I needed at a very reasonable price!!
Came with everything needed, fit as original and restored braking.
Great product. Just as advertised and shipping was very fast. Thanks!
Great service, Will buy from again. Fast delivery.
Fast shipping and correct product for the job great communication.
Ships super fast! Great product.
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