Another electric trailer brake problem

Submitted: Tuesday, Jan 15, 2008 at 18:53
ThreadID: 53525 Views:1764 Replies:6 FollowUps:6
This Thread has been Archived
I didn't want to hijack Captain's thread so I thought it better to start again.

The problem I'm having is the passenger side wheel locks up very easily especially on wet roads. On dry roads it's as though it is grabbing and then letting go, grabbing etc. even second or so.

Both sides lock (jacked up using hand to turn) at around 2.3V to 2.4V.

Problem only occurs when coming to a stop at lights etc. at around 20km/h.

Trailer has done around 6,000km's since new which has been mostly on highways etc.

Trailer is a Pioneer Argle SE.
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Reply By: Member - Graham H (QLD) - Tuesday, Jan 15, 2008 at 18:59

Tuesday, Jan 15, 2008 at 18:59
What controller have u got more likely the settings on it or a bad connection somewhere
Will probably lock early with no load on them
AnswerID: 281811

Follow Up By: Mogul - Tuesday, Jan 15, 2008 at 19:50

Tuesday, Jan 15, 2008 at 19:50
Tekonsha P3, controller works fine with mates caravan.

The passenger locks up even when trailer is fully loaded (around 1300kg's)
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FollowupID: 546152

Reply By: Member - Barnray (NSW) - Tuesday, Jan 15, 2008 at 19:23

Tuesday, Jan 15, 2008 at 19:23
Check the brake adjustment you may have the left side a bit loose and it is grabbing or there is a leaking seal and grease on the linings. the other thing that will give this sought of problem is a damaged brake drum. B
AnswerID: 281818

Follow Up By: Mogul - Tuesday, Jan 15, 2008 at 19:51

Tuesday, Jan 15, 2008 at 19:51
I have adjusted the left brake so it locks by hand at the same voltage as the right one.

Will check seals, etc. when back home next week.
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FollowupID: 546154

Reply By: Member - Barnray (NSW) - Tuesday, Jan 15, 2008 at 19:57

Tuesday, Jan 15, 2008 at 19:57
They both need to adjusted up until the wheel is locked and the backed of till the wheel turns freely without using the brake controller. B
AnswerID: 281824

Follow Up By: Mogul - Tuesday, Jan 15, 2008 at 20:01

Tuesday, Jan 15, 2008 at 20:01
We did this initially with the left one and it made no difference.

Maybe the leading edge needs a champher on it to stop it grabbing.
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FollowupID: 546163

Follow Up By: Member - Graham H (QLD) - Tuesday, Jan 15, 2008 at 20:05

Tuesday, Jan 15, 2008 at 20:05
Check bearings for looseness and brake drum for out of round.
Could have got hot previously and distorted
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FollowupID: 546166

Follow Up By: Member - Graham H (QLD) - Tuesday, Jan 15, 2008 at 20:06

Tuesday, Jan 15, 2008 at 20:06
On second thoughts check why the other wheel ISNT locking up could have a blown seal and have grease on it and its the one at fault.
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FollowupID: 546167

Follow Up By: Member - Barnray (NSW) - Tuesday, Jan 15, 2008 at 20:17

Tuesday, Jan 15, 2008 at 20:17
Good point Graham.
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FollowupID: 546174

Reply By: Member - Barnray (NSW) - Tuesday, Jan 15, 2008 at 20:04

Tuesday, Jan 15, 2008 at 20:04
Look for other reasons before changing the design. B
AnswerID: 281826

Reply By: MEMBER - Darian (SA) - Tuesday, Jan 15, 2008 at 21:08

Tuesday, Jan 15, 2008 at 21:08
I have an ALKO system on my Campomatic, via a Tek. Prodigy - done about 20,000km I guess. From my understanding of the way electric brakes work, the "jack up, can't turn the wheel" check is probably invalid.... that is, the magnet does drag on the drum as the brakes are applied, (drag is more or less, depending on vehicle braking force), but that magnet drag actually employs the turning force of the trailer's wheel while mobile to actually bring the trailer brakes on. My brakes are worn in a number of ways, and are a bit grabby when cold, but otherwise will last awhile yet. They were great when new....... so....... if your shoe clearance adjustments are within spec, and your electrics are ok, it must be the individual friction surfaces...... why not have the drums shaved and get some changeover shoes ? Even if you don't do it yourself, that work should not cost a lot. Magnets are pricey, but if the small depth indicator holes are still there, they will have many a km left in them yet.
AnswerID: 281840

Reply By: Member - Matthew ,United Fuel- Wednesday, Jan 16, 2008 at 19:22

Wednesday, Jan 16, 2008 at 19:22
I had a similar problem earlier this year and it turned out to be bad earths for the brake packs.

Matt
AnswerID: 281981

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