Reply
 
Thread Tools Search this Thread Display Modes
 
Old 08-21-2006, 07:03 PM   #1
2 Rivet Member
 
Currently Looking...
Celaya, Gto. , MEXICO
Join Date: Aug 2006
Posts: 24
Question help brakes

I have a question I put a DrawTite 2-4 Brake Electronic Brake Controller - Time Delayed and the trailer brakes doesn’t work,( I own an old travel trailer ´80, Bravo (brand), made in Ciudad Juarez Mex. about 29-30f. and 6000 lbs, two axel). I checked all wiring (7 pin connector), and every thing works fine, but no brakes. I have current in the connector (blue wire) and following the wire there are continuity till the brakes, but after the magnet also I have power (with a light tester), is that correct?, because I thought one wire goes to ground and the other comes with de current, wrigth?. With the other truck (82 Dodge 360) I used a Tekonsha hydraulic type, and the brakes works fine, now I change it for a 96 F250 PSD and I have the problem. I have read that unless you go more than 10-15 miles/hour (maybe this weekend I’ll try but in the meantime) , it will work, is that correct? or what is wrong? How can I test the electro-magnets and to know if they are fried?

Thanks for all the inputs.
__________________

__________________
DOCTOR-MX is offline   Reply With Quote
Old 08-21-2006, 07:24 PM   #2
uwe
418
 
uwe's Avatar
 
1963 26' Overlander
1958 22' Flying Cloud
1963 19' Globetrotter
Portola Hills , California
Join Date: Jun 2002
Location: 1963 26' Overlander
Posts: 4,765
Images: 41
Send a message via Skype™ to uwe
Quote:
Originally Posted by DOCTOR-MX
How can I test the electro-magnets and to know if they are fried?

Thanks for all the inputs.
Put 12V power straight to the magnets. You should hear a clunk and/or a hum from inside the brake drum.
Also, make sure your negative side is solid ( ground)
__________________

__________________
Uwe
www.area63productions.com
uwe is offline   Reply With Quote
Old 08-21-2006, 07:59 PM   #3
2 Rivet Member
 
Currently Looking...
Celaya, Gto. , MEXICO
Join Date: Aug 2006
Posts: 24
Thumbs up

Uwe, thanks for your answer, I already put 12V straight to the magnets and not any noise and with the axe in block, the wheel spins freely. I´m goning to check the ground. any other idea?


thanks again
__________________
DOCTOR-MX is offline   Reply With Quote
Old 08-21-2006, 08:22 PM   #4
uwe
418
 
uwe's Avatar
 
1963 26' Overlander
1958 22' Flying Cloud
1963 19' Globetrotter
Portola Hills , California
Join Date: Jun 2002
Location: 1963 26' Overlander
Posts: 4,765
Images: 41
Send a message via Skype™ to uwe
Quote:
Originally Posted by DOCTOR-MX
Uwe, thanks for your answer, I already put 12V straight to the magnets and not any noise and with the axe in block, the wheel spins freely. I´m goning to check the ground. any other idea?


thanks again
Time to pull the drums and inspect the wiring and magnets. You might try and read resistance for each individual magnet, and make sure you don't have a wiring break somewhere, or a corroded ground terminal, hard to say without actually being there....
Remember, it takes hot AND ground to make things work.
__________________
Uwe
www.area63productions.com
uwe is offline   Reply With Quote
Old 08-23-2006, 05:03 PM   #5
Rivet Master
 
2007 25' Safari FB SE
Suburbia , Sunny So Cal
Join Date: Jun 2006
Posts: 3,753
Dr. Mx. Can you pull the drum and post some pictures of the brakes, wires etc?
__________________
I'd rather be boon docking in the desert.

WBCCI 6731 FCU
AIR# 13896
CA 4
Goin camping is offline   Reply With Quote
Old 08-25-2006, 07:28 PM   #6
2 Rivet Member
 
Currently Looking...
Celaya, Gto. , MEXICO
Join Date: Aug 2006
Posts: 24
Arrow pics

I will, but first I´m going to check the groun, but now it´s rainning a lot here in my town, so I have to wait to better weather. Thanks anyway.
__________________
DOCTOR-MX is offline   Reply With Quote
Old 08-30-2006, 05:59 PM   #7
2 Rivet Member
 
Currently Looking...
Celaya, Gto. , MEXICO
Join Date: Aug 2006
Posts: 24
Question

Another questions: I´m planning to work tomorrow with my trailer brakes, (if it doesn´t rain)
1.- The magnets has 2 wires, is one of them specific for hot (12V) and the other for ground, or it doesn´t matter which one you use? are there any mark (+ or -) on the magnet or an specific position (central or periferic or something like that)??

2.- The magnets have to show continuity between the wires with the tester?

Thnx for the inputs
__________________
DOCTOR-MX is offline   Reply With Quote
Old 08-30-2006, 06:18 PM   #8
uwe
418
 
uwe's Avatar
 
1963 26' Overlander
1958 22' Flying Cloud
1963 19' Globetrotter
Portola Hills , California
Join Date: Jun 2002
Location: 1963 26' Overlander
Posts: 4,765
Images: 41
Send a message via Skype™ to uwe
Quote:
Originally Posted by DOCTOR-MX
Another questions: I´m planning to work tomorrow with my trailer brakes, (if it doesn´t rain)
1.- The magnets has 2 wires, is one of them specific for hot (12V) and the other for ground, or it doesn´t matter which one you use? are there any mark (+ or -) on the magnet or an specific position (central or periferic or something like that)??
The wires coming off the magnets can be connected either way, as long as there is no short. Not speficic to + or -


Quote:
Originally Posted by DOCTOR-MX
2.- The magnets have to show continuity between the wires with the tester?

Thnx for the inputs
The magnet coil must show resistance. I do not know the actual value off hand, but there should be some Ohm reading on your meter, neither indefinite, nor "0".
__________________
Uwe
www.area63productions.com
uwe is offline   Reply With Quote
Old 09-01-2006, 07:43 PM   #9
2 Rivet Member
 
Currently Looking...
Celaya, Gto. , MEXICO
Join Date: Aug 2006
Posts: 24
Thumbs up good news.

First thanks again uwe.

I worked all yesterday morning checking the wires under the TT, and I founded that the problem was the ground wire, in some part was interrupted. So I put a new one and every thing is working OK. I can hear the "buzz" of the magnets and the wheels blocks in both sides when foot or manual break action.

So in resume, as several of you mentioned and which I founded in the forum searching for electric brakes, the main problem is GROUND.

Maybe next week I´ll try it on the street.

Thank a lot to all of you and the wonderful AS forums.

My best regards. JOSE A.
__________________
DOCTOR-MX is offline   Reply With Quote
Old 09-01-2006, 07:46 PM   #10
2 Rivet Member
 
Currently Looking...
Celaya, Gto. , MEXICO
Join Date: Aug 2006
Posts: 24
I read that the resistance is 3.2 ohms.of the magnets.
__________________

__________________
DOCTOR-MX is offline   Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Brakes working correctly? Dbraw Electrical - Systems, Generators, Batteries & Solar 8 02-27-2007 08:16 AM
Grabbing Brakes 74Tradewind Brakes & Brake Controllers 15 08-05-2004 06:26 PM
problem with Brakes jazzbone Brakes & Brake Controllers 33 08-23-2002 08:05 AM
Disc Brakes? J.Hemingway Brakes & Brake Controllers 2 08-22-2002 08:56 PM
Heeeelp! My brakes have failed...anyone have a similar experience? williamhenshall Airstream Motorhome Forums 9 07-12-2002 04:04 PM


Virginia Campgrounds

Reviews provided by



Our Communities

Our communities encompass many different hobbies and interests, but each one is built on friendly, intelligent membership.

» More about our Communities

Automotive Communities

Our Automotive communities encompass many different makes and models. From U.S. domestics to European Saloons.

» More about our Automotive Communities

Marine Communities

Our Marine websites focus on Cruising and Sailing Vessels, including forums and the largest cruising Wiki project on the web today.

» More about our Marine Communities


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 08:45 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2016, Jelsoft Enterprises Ltd.

Airstream is a registered trademark of Airstream Inc. All rights reserved. Airstream trademark used under license to Social Knowledge LLC.