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F-150 with brake line problem
Topic Started: Jun 10 2015, 05:11 AM (392 Views)
dayle1960
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Fastest Hampster EVER

Yesterday I went to a friend's house to help him remove a large tree branch which the wind had snapped out of the top of the tree.

As I parked my F-150 in his yard I noticed smoke billowing out of the the wheel well on the drivers side. Place my hand on the rim and it was HOT. Ouch. Figured it was the wheel bearings giving up the ghost because in the few times I've driven it lately I felt something was holding the truck back. It seemed that it slowed down quickly whenever I let off the gas and let it coast. Just a head scratcher until the billowing smoke, yesterday.

So I pull the wheel off and pop the axle nut off and look at the outside wheel bearing. It seemed in good condition with no wear or metal grit in the grease. I glance over at the brake line and notice a bit of brake fluid on the line. Hmmmmm.

On the outside of the brake line is a sleeve which keeps the line from rubbing on the truck frame. Somewhere underneath the sleeve was where the leak is coming from. My friend took me down to Oreillys and I pick up a new brake line. Put new fluid in the reservoir and bled the brake.

Buttoned up everything and drove it home. The truck doesn't feel like something is holding it back anymore. I like it.

Now a question. After I got the sleeve off the old line I could not find the pin hole lead. Could the hole have been so small that the human eye couldn't see it? I looked and my friend looked, yet we could not see the hole.

Also, could a hole in the brake line cause the brake caliper to not release?
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don_dowdy
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Salt can get under the sleeve and eat the brake line, and the pressure from a big power brake booster will push fluid through a tiny hole, but that won't make the caliper stick. The flexible line going to the caliper is bad, or the caliper itself is sticking.
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marxtoys
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stuck in a dent

A leak so small you can't see where it's coming from? Sure. Happens all the time.

Cut an end off the hose. What do you see? Layers of different material like rings in a tree. The inside layer came loose in a spot and acts like a check valve. Your foot can push fluid through just fine but the caliper seal can't push it back.

If the brake isn't dragging now then it's fixed. That part anyway. Brake pads might be like electrical parts - they just aren't quite the same after you let the smoke out.
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Johnny Mullet
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Fear the Mullet

Brake hoses can collapse internally allowing fluid to go only one way.
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68custom


Johnny Mullet
Jun 10 2015, 11:18 AM
Brake hoses can collapse internally allowing fluid to go only one way.
this!!
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