Brake Problems!!
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Senior User
Joined: Aug 2014
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Brake Problems!!
Hey guys, got some rear brake issues with my 1990 f150. After driving it today and parking it I noticed a puddle of brake fluid under the drivers side rear tire. I looked and the whole inside of my sidewall was wet with fluid and it was dripping from in between the drum and axle. My friend told me there was some kind of seal in there that is probably the culprit. Any info on this? Also sometimes when I stop and then take off again the brakes hang up for a second and then let go.
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I haven't looked at it yet but will be in the morning. How hard are wheel cylinders to replace? My research has has shown that its either my wheel cylinder or axle seal but I'm positive its brake fluid
Post Fiend
Joined: Apr 2002
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From: Waterloo, Iowa
Not too bad. Of course, the system will need to be bled, too.
Best practice to replace them in axle set pairs, if one let go... the other side isn't far behind. You may well need new shoes if they are soaked w/ brake fluid. In a pinch you might be able to clean them off.. but...
Brake shoes are sold in axle sets only, of 4 (four) brake shoes and usually around $25 or so. Cylinders are maybe $10 a piece or so, depending. Might as well replace the rubber hoses while you're at it.. lol
I'll shut up now.
Best practice to replace them in axle set pairs, if one let go... the other side isn't far behind. You may well need new shoes if they are soaked w/ brake fluid. In a pinch you might be able to clean them off.. but...
Brake shoes are sold in axle sets only, of 4 (four) brake shoes and usually around $25 or so. Cylinders are maybe $10 a piece or so, depending. Might as well replace the rubber hoses while you're at it.. lol
I'll shut up now.
Elder User
Joined: Feb 2014
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From: Lincoln, NE
If it is brake fluid, it is a wheel cylinder. They can be rebuilt but I'm going to say that yours might be pitted too much to rebuild. The hardest part of the replacement is getting the brake line to break loose without twisting and breaking the line. When I worked on brakes all day long, I'd take a torch to heat up the bleeder screw and brake line fitting to get them loose without damage. Wheel cylinders are inexpensive and if you do need a new brake line, JBG has prebent lines ready to bolt on.
Post Fiend
Joined: Apr 2002
Posts: 19,311
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From: Waterloo, Iowa
Hints - Use good flare wrenches and let the penetrating oil do its thing for a day or two, and for the shoes spend the 5 bucks on a set of brake spring pliers. Do one side at a time, take a few pictures, you'll be a pro in no time.
http://www.classictruckshop.com/brake_rebuild.php
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Thanks a ton tedster9! I pulled the wheel and drum off and its definitely the wheel cylinder leaking. Everything is soaked in brake fluid. Looks like I'm doing a brake job today
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Post Fiend
Joined: Apr 2002
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From: Waterloo, Iowa
Well glad to have been some help.
One thing I would have done differently on the 64 is source American wheel cylinders. In the case of the front cylinders the imports were just as expensive, no bargain there. And none of the foreign castings however were quite beveled along the top and would not fit without grinding down a bit. Stuff like that is not worth "saving" money.
The NOS Wagner fit perfectly. The imports seem to work fine ... but the composition of the rubber may be that they do not last long. Some imports have been found with the inlets drilled improperly so they will not bleed, things like that.
One thing I would have done differently on the 64 is source American wheel cylinders. In the case of the front cylinders the imports were just as expensive, no bargain there. And none of the foreign castings however were quite beveled along the top and would not fit without grinding down a bit. Stuff like that is not worth "saving" money.
The NOS Wagner fit perfectly. The imports seem to work fine ... but the composition of the rubber may be that they do not last long. Some imports have been found with the inlets drilled improperly so they will not bleed, things like that.
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