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  1. #1
    Site Sponsor ReiMan1776's Avatar
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    Check Your Brakes & Bearings! My 2019 Imagine 2670MK had a Brake Shoe Lining Failure!

    Don't put off bearing maintenance and brake checks!

    Getting ready to leave in a few days for Kings Canyon National Park.

    My last two trips were ugly, three Westlake tires decomposed, two on one trip despite being properly inflated. Have replaced all with Goodyear Endurance tires, NO MORE tires made in China!

    So, with safety on my mind I decided to do wheel bearing maintenance myself, grease repack and check the brakes.

    All was going smoothly, three wheels done, one more to go yesterday. As soon as I pulled the hub off a large piece of brake lining fell out. The brake lining on the trailing shoe came apart from the metal, not worn, just completely came off. Dexter brake assembly.

    Glad I found out now before leaving on our trip however getting parts a problem. Long story short I am replacing all 4 brake assemblies with Lippert Components self adjusting, 10" x 2.25" should fit the Dexter drum / axle but will let you know. Lippert part number 296650 / 296649 Cost for set of 4 about $200 on Amazon.

    I confirmed with GD I have a 4400lb Dexter axle. Lippert lists these components for 3500# axle but web research indicates these should be correct. If anybody knows differently let us know.

    For right now, hopefully I motivate you folks to perform this critical service and inspection on your rig. Being safe is being happy.

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  2. #2
    Paid my dues 😁 FT4NOW's Avatar
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    Good find, I've never seen that. Here's a tip for you, when installing the new assemblies, be careful about pinching the brake magnet wire on the backside. Its very easy to do and not notice. I did this on my Momentum and it caused me a lot of time searching for the short on my brake line, I eventually found it, but it was completely avoidable.

    Sent from my SM-G950U using Tapatalk
    2023 Momentum 398M-R
    2023 Ford F-450

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    SOLD - 2017 Momentum 399TH

  3. #3
    Long Hauler geotex1's Avatar
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    Electric drum brake setups are fairly generic and the usual difference is the drum casting. You very likely could have gotten a loaded backing plate from your local trailer shop that would work fine. Nevertheless, the important point is that you found the problem before a bigger problem occurred!
    Rob & Nikki + Cloverfield
    2020 Grand Design Solitude S-Class 3350RL
    2015 RAM 3500 Longhorn Laramie Crew Cab, Long Bed, 4x4 Dually Cummins/AISIN

    Mountains of Pennsylvania

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    Site Team Ynot4me2's Avatar
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    Good catch. I'm planning on adjusting ours this weekend before our trip on June 6. If campgrounds and parks open that is.

    Sent from my SM-P610 using Tapatalk
    Steph & Lise
    2019 F150 Lariat 2.7 EB
    2020 Imagine XLS 22MLE

  5. #5
    Site Sponsor ReiMan1776's Avatar
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    Good tip,,,, thanks.

  6. #6
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    Quote Originally Posted by ReiMan1776 View Post
    Don't put off bearing maintenance and brake checks!
    Good find! Had this same thing happen to me, and it ruined both drums on my passenger side. Doesn't appear to be too uncommon.

    Given the cost of the whole system, I ended up going with Hydraulic disc brakes. Best move I could've made with the trailer.
    There's no substitute for rigorous maintenance and checking things out!
    2018 Solitude 344gk
    2021 Ram 3500 SRW

  7. #7
    Rolling Along jleonard's Avatar
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    I had that happen on a new Chevy truck that had very low miles on it. It rattled around inside the drum for a while. Replaced under warrantee.
    Jay Leonard
    New Port Richey, Fl
    2022 Imagine 2600 RB, 2021 Ram 2500 CC Bighorn 6.7L Cummins

  8. #8
    Site Sponsor ReiMan1776's Avatar
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    Update to the parts fiasco: Ordered Lippert self adjusting on amazon, would have fit and been perfect except the backing plate holes do not line up. The flange on the 4400lb axle has the upper holes that match but the lower holes are farther apart. Saturday panic before my trip, went to NAPA auto parts and lucked out as they found the brake shoes only. Changed out the shoes only and got on the road but it was a royal pain, bought a brake tool to assist with removal / install of the springs but it was useless.

  9. #9
    Site Sponsor ReiMan1776's Avatar
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    As a further update I just installed new brake shoes on the remaining wheels. I discovered several other brake shoes with large chunks of lining broken off and gone.

    So, now I am thinking this may have caused my tire blowout problem that with the cost if new tires cost me about 2 GRAND. Large chunks of lining breaking off could have caused excessive heat leading to tire failure. It just makes sense with the THREE blowouts in short order. I have towed trailers for many years and never suffered a blowout.

    Besides the expense this is a real safety issue and I am going to take this up with Grand Design, Dexter mfg, and the NHSTA

    The shoes are stamped April 2018

    And yes, I just ordered a tire pressure monitoring system. Tire Minder i10Click image for larger version. 

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    Last edited by ReiMan1776; 06-15-2021 at 08:50 AM.

  10. #10
    Site Sponsor ReiMan1776's Avatar
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    Quote Originally Posted by ReiMan1776 View Post
    As a further update I just installed new brake shoes on the remaining wheels. I discovered several other brake shoes with large chunks of lining broken off and gone.

    So, now I am thinking this may have caused my tire blowout problem that with the cost if new tires cost me about 2 GRAND. Large chunks of lining breaking off could have caused excessive heat leading to tire failure. It just makes sense with the THREE blowouts in short order. I have towed trailers for many years and never suffered a blowout.

    Besides the expense this is a real safety issue and I am going to take this up with Grand Design, Dexter mfg, and the NHSTA

    The shoes are stamped April 2018

    And yes, I just ordered a tire pressure monitoring system. Tire Minder i10Click image for larger version. 

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    Thanks to Dexter Axle Co who called me and taught me some new valuable lessons.

    The one shoe with missing lining is definitely not normal.
    The other shoes with shortened lining are normal, they face forward.

    Of real importance and something I did not know is lubrication is required when normal inspection and maintenance is performed.

    Here is the link to the Dexter Service Manual:
    https://www.dexteraxle.com/user_area...ice_manual.pdf

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