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Unread 06-18-2003, 05:56 PM   #1
rustyCJ
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Join Date: Sep 2002
Location: IL
Posts: 938
wheel cylinders

how do you test wheel cylinders to find out if they are good or not? i installed new hardware and shoes on a rear 20 with 11" brakes today and the drums fit so tight they will barely spin with the adjuster in all the way. i am assuming its the wheel cylinders are just bad but would like to test them before buying new. so how you test them?

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Unread 06-18-2003, 09:01 PM   #2
fuzz401
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1978 CJ7 
 
Join Date: Jan 2003
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the only thing i know is if they leak or not could try to push them in and see if they slide back and fourth
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Unread 06-18-2003, 09:18 PM   #3
tgc79cj5
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Location: Dyersburg, TN
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I just recently finished rebuilding my rear brakes.........shoes, hardware, wheel cylinders...........but when I put my drums back on they were too tight, even with the adjustment loosened.

Drove me crazy until I figured out that my e-brake cables were frozen and the shoes would not set properly and were forced against the drum.

Just something to check. Good luck!
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Unread 06-18-2003, 09:24 PM   #4
rustyCJ
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i dont have ebrake cables and dont have the ebrake bar(cant think of what it is called) installed.

i dont know if the cylinders are pushed all the way in or if they are stuck out. i dont want to press on the pedal and blast the cylinders apart if they are good either.
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Unread 06-18-2003, 09:54 PM   #5
only in a jeep cj
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1986 CJ7 
 
Join Date: Jun 2001
Location: Mobile, Alabama
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peel back rubber boots and look inside. if all rusted or damaged, replace it. also use pressure on both sides and see if the 2 pistons inside slide back and forth EASILY, if not replace it.....IMO, replace it if you are unsure, they're 10 bucks each at autozone and you already have it all apart...why not. as for as it being tight, are the shoe frames resting properly on the piviot pin at the top, if not, your pistons are not fully compressed and the drum will be tight
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