Hot hub locks up when backing

[backyardhockey3]

Dual Axel and surge brakes. Drum brakes. Hubs on front axel are about 110 degrees. Passenger side rear is 130 degrees. Drivers side rear hub gets to 160-165 AND locked up when backing the other day. Only the drivers side locked up. Pulled forward and then could back up. This was on flat ground. This was the first time I have had brakes lock up.

I've search a lot of threads but haven't seen this set of circumstances. I have about this reverse lock out stuff but don't know anything about it. Any thoughts?

 

[Bob's Garage]

Re: Hot hub locks up when backing

What type brakes do you have disc or drum? When were they last serviced? What type axles do you have? Brakes on both axles?

Although others will disagree, I think 160 deg. is too hot. 130 is pretty hot, but if the ambient temperature is close to 100, the roadway will be hot, which will drive up the temperature of the tires/hubs.

Here in Florida, my temperatures run, generally, under a 100 deg.

If you have torsion axles, the trailer must be towed level or more weight will be carried on the lower axcle, causing a greatwer temperature and tire wear on that axle. Even a small amount of difference can create a 10/20 deg. difference.

 

[theBrownskull]

Re: Hot hub locks up when backing

The reserve back up solenoid allows the brakes to move freely when backing up causing the master cylinder on the brakes to move inward, thus activating the brakes. You might be having a problem with the solenoid, which I have had, or the brake caliper so I would check both. If it ever gets to the point where it will not work in reverse just use a "lockout" pin to prevent this. I have included pictures on my trailer where the lockout pin is placed.

It could also be your bearing, on that side is going bad. I would also pull off the rim and hub and just check it.

 

[backyardhockey3]

Re: Hot hub locks up when backing

Drum brakes. Not sure what kind of axels but the rig looks pretty level. Whole trailer was overhauled about 3 years ago. Since then maybe 5,000 miles on it. Fresh water only.

No lock out pin

 

[Thalasso]

Re: Hot hub locks up when backing

The reserve back up solenoid allows the brakes to move freely when backing up causing the master cylinder on the brakes to move inward, thus activating the brakes. You might be having a problem with the solenoid, which I have had, or the brake caliper so I would check both. If it ever gets to the point where it will not work in reverse just use a "lockout" pin to prevent this. I have included pictures on my trailer where the lockout pin is placed.View attachment 159828View attachment 159829

It could also be your bearing, on that side is going bad. I would also pull off the rim and hub and just check it.

He has drum brakes. They are free backing. If they lock up he has other problems.There is no solenoid on free backing and no lockout pin.

 

[Thalasso]

Re: Hot hub locks up when backing

Drum brakes. Not sure what kind of axels but the rig looks pretty level. Whole trailer was overhauled about 3 years ago. Since then maybe 5,000 miles on it. Fresh water only.

No lock out pin

Pull the wheels and check your bearings. 3 yrs freshwater or not they should be checked yearly. Do you even grease them? Bad bearings are going to create heat.5000 miles in three years. I think that is a lot of miles
My guess is your going to find bad bearings especially on the wheel that is locked up. Just hope it hasn't ruined the spindle

 

[backyardhockey3]

Re: Hot hub locks up when backing

So I jack it up and spinning the tire is very difficult. I pulled it apart and a brake shoe just fell out! I'm guessing that is at least part of the issue. I have never done brakes b4 but, with ytube here I go. I do grease the hubs with some frequency. And I will look at the other side when I have this job done.

 

[theBrownskull]

Re: Hot hub locks up when backing

Ooops sorry should have read closer on that one I guess. Jack it up and check them out I guess.

 

[backyardhockey3]

Re: Hot hub locks up when backing

So I get the brakes off and go to the auto parts store. Well that got me nothing. I'll have to contact the shop that did the overhall and see if they can identify/provide the shoes I need. Put it back together and it spins nice and quiet. Checked all other and they all spin quiet and freely.

 

[Thalasso]

Re: Hot hub locks up when backing

So I get the brakes off and go to the auto parts store. Well that got me nothing. I'll have to contact the shop that did the overhall and see if they can identify/provide the shoes I need. Put it back together and it spins nice and quiet. Checked all other and they all spin quiet and freely.

Did the springs come off. How was the bearings (inner) usually the inner goes before the outer. When the bearing goes bad it will cause the drum to wobble at slow speeds. Something caused that side to come off.

 

[theBrownskull]

Re: Hot hub locks up when backing

backyardhockey3,

If a shoe fell off I would say, without seeing it, that a spring broke like Thalasso said. Maybe whoever overhauled it forgot to secure the shoe hold down spring on or it or the shoe pin broke.

 

[backyardhockey3]

Re: Hot hub locks up when backing

All springs attached. Again, this is the first time Ive ever looked at brakes so I apologize for not being able to express what I,m seeing. The shoe was off and laying in the drum. The "shoe plate" or what ever you call it was still in place.

I appreciate all the replys.

 

[CatTwentyTwo]

Re: Hot hub locks up when backing

All springs attached. Again, this is the first time Ive ever looked at brakes so I apologize for not being able to express what I,m seeing. The shoe was off and laying in the drum. The "shoe plate" or what ever you call it was still in place.

I appreciate all the replys.

I know you said you are in fresh water but it almost sounds like the rivets holding the lining to the shoe rusted away. Either that or you have brake linings glued on and the bond failed. I can't believe that if you take the "shoe plates" to a good auto supply store that they will not be able to help you. You were very lucky to find this when you did and I don't think it will take much to get you back on the road and boating again.

 

[Lou C]

Re: Hot hub locks up when backing

If you have drum brakes the easiest thing to do is to get a pair of new backing plates with all the parts installed, it is actually cheaper that way and easier than dealing with the springs, etc. Make sure to get free backing galvanized brake clusters with aluminum wheel cylinders.