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  #1537  
Old 12-02-2015, 01:48 AM
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Re: The Towing thread

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Originally Posted by allypally View Post
If the drums are "quite warm" is there a chance that they are on too tight? i.e. always rubbing?
The brake "expert" adjusted both drum sets. The wheels turn easily by hand when jacked up, so I don't think they are rubbing normally, what happens when underway I'm not so sure. When the new controller was fitted, the sparky checked all the wiring and resoldered some joints.
I'll pursue the solenoid idea as step one, thanks.

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  #1538  
Old 12-02-2015, 02:16 AM
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Re: The Towing thread

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Originally Posted by Hutch801 View Post
On the Glass... Lol sorry couldn't help it. Look closely to the left of the snorkel.
Attachment 62715


Hutch- 2014 GC Blackhawk CRD...Feel the Power...

I like the idea of a snorkel, but with all of those electrical systems under the front seat, I wonder if travelling through water deeper than the height of the car is worth the trouble.


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  #1539  
Old 12-02-2015, 05:14 AM
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Re: The Towing thread

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Originally Posted by Fatboy View Post
The brake "expert" adjusted both drum sets. The wheels turn easily by hand when jacked up, so I don't think they are rubbing normally, what happens when underway I'm not so sure. When the new controller was fitted, the sparky checked all the wiring and resoldered some joints.
I'll pursue the solenoid idea as step one, thanks.
Electric trailer brakes are a bit different to car drum brakes in that when they are adjusted they are backed off a lot more to account for the lever operation related to the magnet. As I recall, some 10 clicks as against 3 or so clicks on car drums. Now a days the manuals usually say back off so the wheel will turn about a revolution, but I've found this usually results in hot brakes.
If they are adjusted up too tight this will give weird operation.
I'd check the experts adjustment as a first step. Easy to confirm.
Make sure the handbrake cable completely releases as well so it doesn't create drag.
And these brakes do get quite warm if you are working them hard - normal running without braking you should be able to touch the drums, but if you spit on them and they sizzle you have an issue.
John
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  #1540  
Old 12-02-2015, 06:41 PM
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Re: The Towing thread

Ive recently had an issue with drums overheating on a camper trailer, tried all kinds of things and in the end it was wheel bearings. No issues since replacing them, just something else you might want to check.
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  #1541  
Old 12-02-2015, 09:41 PM
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Re: The Towing thread

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Originally Posted by Fatboy View Post
I am having trouble with the brakes when towing my Camper. When I start from cold, everything seems to work well, brakes apply and release smoothly. After I have been driving for a while the brakes sometimes do not release for a second or 2, seems to happen more with moderate braking when released after almost stopping. I have had the brakes serviced my a supposed expert who could not find any problems. I have just replaced the brake controller with a Redarc Tow pro, with out any improvement. The brake drums are quite warm when this is happening.

Anyone have a suggestion on where I go from here, or is this something I just have to put up with?

cheers

FB
Leaving aside the purely trailer issues that Ally is covering, it sounds to me that you have "grabby" brakes. This could be for a number of reasons.
  • The drums may be out-of-round and require machining.
  • The shoes may be worn down to the metal.
  • The brake linings may be contaminated. Linings can easily get contaminated with oil or brake fluid through careless maintenance. The linings are porous so once contaminated they need to be chucked. It takes just a trace of oil to make the useless.
  • Unlikely these days but the repairer may have installed "hard" linings. These are intended for racing and are too grabby for light loads.
Note that few understand drum brakes these day. Frankly, I was glad to see the back of those cantankerous things and then most disappointed when I later bought a camper and found they had returned to haunt me.
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  #1542  
Old 12-03-2015, 12:24 AM
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Re: The Towing thread

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Originally Posted by BobT View Post
Frankly, I was glad to see the back of those cantankerous things and then most disappointed when I later bought a camper and found they had returned to haunt me.
And that begs the question - why don't they use disc brakes? Cost, too complex for trailer braking systems, what?
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  #1543  
Old 12-03-2015, 01:04 AM
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Re: The Towing thread

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Originally Posted by mjt57 View Post
And that begs the question - why don't they use disc brakes? Cost, too complex for trailer braking systems, what?
Good friends who have had disc brakes on two successive vans have had no end of issues with the electric over hydraulic controllers. We've travelled with them lots and my personal observation is that the brilliant braking the system promises is grossly overshadowed by the inconvenience of having to deal with problems over a long period of time.
It is highly likely that it relates to the components they run, and the conditions they are asked to run in, but as far as I am aware they are all top shelf. Just that they don't play nicely.
By contrast - our off road single axle van with 12" drums has travelled in excess of 300,000k, and over some of the roughest roads our country can provide, never mind corrugations, dust and water.
Yes, I've replaced the complete assemblies - drums and backing plates - once (because it was cheaper than doing individual bits), and they do get checked every 10,000k or so depending on where we've been - but I'm happy to stick with what we have for sure.
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  #1544  
Old 12-03-2015, 01:19 AM
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Re: The Towing thread

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Originally Posted by Fatboy View Post
I am having trouble with the brakes when towing my Camper.


Thanks everyone for your suggestions. I have discovered that my brakes are made by ALKO. I will find a local ALCO dealer and get them checked out. The Camper is only 18 months old, and the brakes have never worked well, so perhaps have been suspect from new.
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  #1545  
Old 12-03-2015, 03:22 PM
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Re: The Towing thread

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Originally Posted by Fatboy View Post
The brake "expert" adjusted both drum sets. The wheels turn easily by hand when jacked up, so I don't think they are rubbing normally, what happens when underway I'm not so sure. When the new controller was fitted, the sparky checked all the wiring and resoldered some joints.
I'll pursue the solenoid idea as step one, thanks.
Hi,

Not sure if this is relevant to your brakes but we have found in some cases with Alko brake shoes that they have been manufactured slightly longer in the actual shoe support and this can bind and hold the brakes on momentarily. It is particularly noticeable in reverse.

It can also be that Alko shoes have been fitted into Dexter backing plates.

The brake magnets draw approx. 2.5 Amps each and it is easy to test with a clamp meter if there is any residual current flowing in the system.

Pete
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  #1546  
Old 12-04-2015, 12:37 AM
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Re: The Towing thread

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Originally Posted by Fatboy View Post
Thanks everyone for your suggestions. I have discovered that my brakes are made by ALKO. I will find a local ALCO dealer and get them checked out. The Camper is only 18 months old, and the brakes have never worked well, so perhaps have been suspect from new.
By all means give them a try but ALCO make all sorts of things, they are not brake specialists. I'd give someone like Better Brakes a call to see if they are interested. Qickfit at Hornsby would certainly fix it but I don't know if you have some like that up your way.
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  #1547  
Old 12-04-2015, 01:02 AM
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Re: The Towing thread

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Originally Posted by mjt57 View Post
And that begs the question - why don't they use disc brakes? Cost, too complex for trailer braking systems, what?
The leading shoe of drum brakes tends to dig into the drum providing a level of mechanical advantage. Disc pads simply press up against the disc therefore they are relatively inefficient compared to drums and require hydraulics and maybe even power assistance to get the same braking force. That's why hydraulics are not required for drums on a trailers. So yes, discs are more complex overall and therefore expensive. The disadvantage of drums over discs is that they overheat much easier and fade but this is hardly an issue with trailers.
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  #1548  
Old 12-18-2015, 10:51 AM
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Re: The Towing thread

I can't seem to find any definitive info on the "tow package".

I have a new 2015 Grand Cherokee Limited. The dealer supplied and fitted the towbar. But I don't know what else goes with it, other than a standard 7 pin flat plug.

Exactly what is in this tow package?

Oh, I'm in Australia.

Thanks
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