Electric Brake problem

Submitted: Saturday, Jun 21, 2008 at 19:40
ThreadID: 59071 Views:3412 Replies:5 FollowUps:5
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Hi All, We have just purchased a Jayco Westport caravan 2002 model and I thought I would check the brakes before we head off for our holidays. The brake controller is ok but on checking the wheels only one wheel brakes. All the wiring seems ok and measures through, there is a slight hum from the wheel that doesn't brake but it does not engage the magnet even with the controller set to maximum. Is there any way to check if the electromagnet is burnt out? I have measured it through and it seem ok.

Thanks
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Reply By: Gazal Champion - Saturday, Jun 21, 2008 at 20:18

Saturday, Jun 21, 2008 at 20:18
Hi grey nomads,
continuity check with an ohms meter will tell you if the circuit is OK.
Check the good side and see if the bad side reads the same.

Repco carry parts for electric brake units if you have to buy replacement bits.
Regards,
Bruce.
At home and at ease on a track that I know not and
restless and lost on a track that I know. HL.

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AnswerID: 311516

Follow Up By: 2 grey nomads - Saturday, Jun 21, 2008 at 20:26

Saturday, Jun 21, 2008 at 20:26
Hi Bruce,

Thanks for that I will check in the morning. Will let you know how I go.

Regards Dieter
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FollowupID: 577483

Reply By: Member - Bucky (VIC) - Sunday, Jun 22, 2008 at 05:02

Sunday, Jun 22, 2008 at 05:02
2 Grey Nomads

Try this thread ThreadID: 57564

and this one ThreadID: 53503

Electric Brake Store

Another Shop

How to Service !

A lot of info there, hope you can get thru it OK

Cheers
Bucky
AnswerID: 311557

Follow Up By: 2 grey nomads - Sunday, Jun 22, 2008 at 09:30

Sunday, Jun 22, 2008 at 09:30
Thanks Bucky,

Great info, you just need to know where to look. I will check everything today to try to fix the problem.

Cheers Dieter
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FollowupID: 577546

Reply By: DIO - Sunday, Jun 22, 2008 at 09:32

Sunday, Jun 22, 2008 at 09:32
In the interests of road safety, yours and others, please get it checked by a brake specialist.
AnswerID: 311572

Follow Up By: 2 grey nomads - Sunday, Jun 22, 2008 at 17:12

Sunday, Jun 22, 2008 at 17:12
Please do not presume that we are not interested in road safety. As if we did not care then we would have just hooked the van on and driven off. That is the reason that we ALWAYS check everything before we set off.
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FollowupID: 577595

Reply By: macbushy - Sunday, Jun 22, 2008 at 12:58

Sunday, Jun 22, 2008 at 12:58
Reminds me of the story about the guy who had his electric brake system intalled by "professionals". who didnt check wiring properly.

picked up the van and departed immediatly for holiday.After several days, they finally found the fault as to why brakes seemed ineffective and car shuddered around LH corners.

Brake operating from LH indicator wire OFF ON OFF ON LOL
AnswerID: 311612

Follow Up By: 2 grey nomads - Sunday, Jun 22, 2008 at 17:08

Sunday, Jun 22, 2008 at 17:08
Yes that's what worries me taking it to the "professionals"
unfortunately I have exhausted all ideas and still have not found the problem. It all seems to be wired ok but the full 12v does not get to both wheels. Anyway it is off to the professionals tomorrow I only hope they find the problem. Hoping to go away soon.
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FollowupID: 577594

Reply By: Dunaruna - Sunday, Jun 22, 2008 at 20:02

Sunday, Jun 22, 2008 at 20:02
You asked if there is a test for the magnets, the answer is yes - power it up, put a steel screwdriver against it. If it sticks, its working.

On the offending wheel, how does the magnet look (all 4 wear holes should be visible)? When power is applied, does a steel spanner stick to the magnet? Is the drum magnet surface clean and flat? Is the magnet mount in good condition (not worn)? Are the wires inside the drum in good condition (not rubbing bare and earthing)? Are all connections soldered? Is the earth return to the plug AND the frame? Does the main loom split in the middle of the van and not on one side? Are the shoes adjusted correctly?

These are the main problems we find everyday. Wornout magnets are (by far) the main culprits.

If you have doubts, post a pic with the drum off.
AnswerID: 311684

Follow Up By: 2 grey nomads - Thursday, Jun 26, 2008 at 08:23

Thursday, Jun 26, 2008 at 08:23
Thanks, yes we tried all that with the spanner and it all worked. We checked all other things you mentioned and still could not find the problem. So yesterday we had it checked out at the auto electricians and they found it was the controller. Anyway we have a new controller fitted and all is now working correctly.

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FollowupID: 578259

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