Replaced Brake Assembly

[danemayer]

Replaced the off-door-side rear brake assembly on our Landmark today. It broke last week while traveling and I had to cut the wire to the magnet and put the parts back together to continue the trip.

All better now. Btw, there is no problem with the wiring.

And it's pretty easy to change out the entire assembly rather than try to rebuild.

 

[Rollin_Free]

Glad to see you were able to replace the entire brake assembly. The one you pictured is a mess. Any idea what started the problem?

 

[danemayer]

Glad to see you were able to replace the entire brake assembly. The one you pictured is a mess. Any idea what started the problem?

It looks to me like the magnet and nearby parts suffered severe heat damage. The adjusting shaft has what looks like either wear or heat damage on one end, allowing it to fall apart. But frankly, I'm not sure what started it all. I suppose it probably started with the mechanism falling apart, jamming against the drum. I suspect the magnet internal wiring shorted late in the game, causing an abnormal reading that generated a message on the truck console.

But I'm not sure.

 

[Jesstruckn/Jesstalkn]

Dan that doesn't look good. It is definitely easier to change the whole thing and actually I think it's cheaper too.

 

[carl.swoyer]

I just had my brakes on my 2012 landmark inspected. They are at 50% . That was good news!

Sent from my XT1254 using Tapatalk

 

[Rollin_Free]

I've been replacing my brake assemblies, bearings and races this week. I was reading the owners manual and found a statement I wasn't aware was in the book until yesterday. I didn't realize the landing gear had the limitations stated.

 

[danemayer]

I've been replacing my brake assemblies, bearings and races this week. I was reading the owners manual and found a statement I wasn't aware was in the book until yesterday. I didn't realize the landing gear had the limitations stated.

From the description, this sounds like the electric landing gear. But as many have commented in a number of threads, when working under the trailer, whether electric or hydraulic landing gear, a good safety practice is to have the trailer hitched up.

 

[Rollin_Free]

From the description, this sounds like the electric landing gear. But as many have commented in a number of threads, when working under the trailer, whether electric or hydraulic landing gear, a good safety practice is to have the trailer hitched up.

Yes they are electric power but what it's stating is if you jack up the trailer it should (or must) be connected to a TV to support the extra weight. When I do work on the suspension I'm normally connected to the TV for stability and safety. However yesterday when going for parts I needed the TV to get parts so the rig was jacked up on one side and no TV connected while I went to the store. As soon as I read that in the manual I immediately connected the TV again. From now on if I need the truck I'll lower the rig from the jacks before disconnecting from the 5th wheel.

 

[JohnD]

I've been replacing my brake assemblies, bearings and races this week. I was reading the owners manual and found a statement I wasn't aware was in the book until yesterday. I didn't realize the landing gear had the limitations stated.

I've often wondered if the landing legs were HD enough to lift the whole trailer for tire changes or other maintanence work.

I read here all the time where many do just that when they are doing wheel bearing, axle, spring or brake work.

 

[Rollin_Free]

I've often wondered if the landing legs were HD enough to lift the whole trailer for tire changes or other maintanence work.

I read here all the time where many do just that when they are doing wheel bearing, axle, spring or brake work.

Agreed - I just can't believe I didn't see this statement before yesterday in the manual. In the short time I've had this rig I'll bet I've read, or probably skimmed, that book a dozen times. Proves once again that I'm not to old to learn something new.

This makes me question whether the level it systems have this same restriction. I've been thinking about this upgrade for a lot of reasons but one was to make it easier to jack up and work on the rig. So question is are the level up systems heavier duty and can they actually support the entire weight of the rig without any of the wheels touching ground with the TV disconnected. I've always assumed disconnecting the TV was required before you touched the level button so this may have already answered my question but now I'm not sure.

 

[Jesstruckn/Jesstalkn]

My 2¢ on this one....
The electric jacks are more then strong enough to handle the weight. The manufacturer has to put a comfortable weight rating on them to cover there butts for safety reasons and keep the sue happy people that do stupid things then try to sue them for stupidity.

A set of jack stands or some blocks of wood under the frame rails is more then safe. With electric jacks I would only do one side at a time.
With the level-up the hydraulic rams are rated something like 8000 to 10000 lbs each ram
(Don't quote me on those numbers) I can't seem to find that exact info right now. So 8000 X 6 legs = 48,000lbs you'll have no problem picking up a 12000 to 18000 lbs trailer.
Eaven if it's only 5000lbs per leg that's 30,000lbs ......

If you crawling around under there doing a brake job or anything like that it's always a good idea to use that jack stands or the blocks of wood just in case you for some freak reason blow a hydraulic line or the level-up dicided to short out and lower on its own.


Sent from my XT1254 using Tapatalk

 

[danemayer]

If each of the landing gear legs supports 5000 lbs., that's 10,000 lbs of support up front on a trailer weighing in at <16,000. Most of the weight is still in the back, whether supported by the wheels or by jacks, or by stands. If you jack the rear end up so the trailer is no longer level, I would expect the weight up front to increase a little because of the slant. But it's not like the entire weight of the trailer transfers to the landing gear because you put a jack under the back.

So if your pin weight is normally 3,000 lbs, sitting on 2 legs, maybe it goes to 4,000 lbs sitting on 2 legs. If I had been awake more in my physics class, I could probably estimate more precisely.

I don't think you'll be anywhere near the capacity of the landing gear.

Nevertheless, failures can occur for many reasons and the safe thing to do is hitch up.

 

[Rollin_Free]

While I don't disagree with your weight analogy I only provided a copy of a section of a page from the actual owners manual. I just thought others may have overlooked the same information in their manual and it's good to know info. Not really much different from scaling the rig IMHO.

 

[JWalker]

Lost two brake systems on the way back from the New York rally last year. It is just easier to replace the entire assembly. A lot less headaches. When I removed the brake drum, pieces just fell out. All better now.

 

[Rollin_Free]

Looks like your leveling system makes a perfect Jack to work on the suspension. Sure easier than carrying a 12ton floor jack around.

 

[Bones]

I would use the leveling system in a heart beat to lift the trailer and I would have absolutely no worries. I used a combo of hydraulic jacks jack stands and the my front landing legs when I was lifting my trailer.