Trailer brakes?

[Marvin willis]

Does this thing need 12vs to get brake fluid through it

 

[Marvin willis]

Never mind. Yes it does.

 

[Scottintexas]

I hope your going to do a thread about this

 

[subysti]

Usually no. If it's a standard surge brake actuator then the only time it needs 12 volts is when you back up and it opens the valve so the brakes don't lock up. You can even bypass that with a key that gets inserted.

 

[DCB-270]

Looks like you need a new one. Not that much money.

 

[Marvin willis]

Thanks

 

[DCB-270]

I just put a new one on mine. Then found the break line was bad too. Think I got it now but haven't been on the road yet.

 

[Marvin willis]

So without 12vs it should still flow brake fluid through it?

 

[Ronnie]

Yes.

 

[Marvin willis]

I wish I never started this project. I don't understand how this system works. The shaft you pump goes into a empty hole. How is it supppse to pump anything.

 

[Ronnie]

Not sure what you mean but as I understand the surge brake mechanism, when the tongue is compressed (during braking) the shaft/shock pushes brake fluid through the brake lines and into the calipers which triggers the brakes. As the shaft/shock is decompressed the fluid moves the other direction and the brakes disengage.

Still, i hear what you are saying and have felt your pain. It would have been far easier for me to replace the entire assembly than just the safety cable.

 

[Marvin willis]

I wish I bought my brakes locally. I'd return it all and bolt a new trailer tongue on. What a complete waste of time and money. My 2500 can stop the boat faster than my 1500 did with the trailer brakes.

 

[Marvin willis]

I'm learning as I go. So I got the piston moving but I can't get anything but air out the hole where the reverse silinoid goes. Any suggestions?

 

[Marvin willis]

Not sure what this is for but it works perfect without it. This cap goes over the spring inside

 

[Marvin willis]

What a pita but it's done besides bleeding the brakes. Sorry for the rant. Thank you for the help

 

[Marvin willis]

Now I need the trailer tongue actuator thing but I can't find one like mine. I'm getting fluid to my calipers but no brakes. I'm Tired of working on it. I'd rather spend money than deal with this bs. Any suggestions on something that will fit

 

[Marvin willis]

Everything im looking up is for a 3" tongue. Is that id or od? My i
Od is 3.5. Id is 3

 

[Marvin willis]

I found a replacement master cylinder on Amazon for 60 so I didn't have to order the whole thing. Gonna have a huge right up when this project is over

 

[Ronnie]

If the replacement part you found does not workout look at etrailer.com or pacific trailers.

 

[Marvin willis]

Last trailer question. Anybody know what size axle length?