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Old 10-21-2018, 07:12 PM   #1
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Air brakes and storage question

I have a 2006 Holiday rambler and last 2 years after winter storage the air brakes locked up 1st year was able to get it to back up and free them but last spring it was a lot harder. My question, Do I have to engage the brakes? I'm on a flat level surface and can chock the wheels
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Old 10-21-2018, 07:58 PM   #2
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The park brake system is spring applied and air released .
Even if you don't apply the brake when you park , as your air system slowly bleeds down , the park brake comes on anyway.
Is your storage outside in a high humidity area ?
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Old 10-21-2018, 10:07 PM   #3
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Air brakes have slack adjusters, it doesn't matter if they are manual or automatic, the mechanism must be lubricated . If they are not lubricated they may not perform as designed. Our MH had been in storage for 8 years when we bought it, the parking/emergency brake worked fine, still does, the slack adjusters are lubricated per schedule.
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Old 10-21-2018, 11:20 PM   #4
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Quote:
Originally Posted by ksmth6 View Post
...Do I have to engage the brakes? I'm on a flat level surface and can chock the wheels
You need to learn and understand how your air brakes work. When you have no air, the rear brakes WILL BE APPLIED and you cannot do anything about this. This is the “fail safe” mode of the air brakes. If you lose air, the rear brakes come on.

This happens to a lot of coaches that are parked for a while, especially if they have been parked right after driving in the rain. The key is to have a little room to back up. Just a little movement in reverse will release the stuck brakes.
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Old 10-22-2018, 09:53 PM   #5
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There is a way to store your MH without the spring brakes engaging, cage them. It locks the spring in a compressed condition, rendering them useless until the cage bolt is removed. I sure wouldn't go that trouble though, trying to crawl underneath with no air in the suspension-twice.
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Old 10-22-2018, 10:46 PM   #6
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As an owner of many dump trucks.
You can crawl under and "cage" the brakes after you block-chock tires on flat surface.
The special bolt looking part is available at heavy-duty truck-auto part houses.
Kinda hard.
Or
Leave them alone altogether.
And if they too become frozen-stuck,
Block tires.
Build air, release brakes.
Take a 2 lb single jack..mini sledgehammer and beat on the
Outside of the drums.
Usually, only one drum will be frozen to brake lining.
You will know when it will release with a big pop.
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Old 10-22-2018, 11:35 PM   #7
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not only should the slacks be lubricated I would also lubricate the S-Cams... but as mentioned above... the friction touching the drum all winter will allow the drum to rust and the friction will want to stick to the rusted drum... as suggested above don't be afraid to take 3 or 5 lb hammer and smack the drum... you can't hurt the brakes...
I would also consider tapping the show from the back side.. most air brake systems don't have dust covers and the shoes are exposed from the underside of the coach....

Best of luck...
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