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Wheel Cylinder blow out
11-26-2013, 02:32 PM
Post: #1
Wheel Cylinder blow out
2004 Saturn Vue 4 Cylinder FWD Standard, Central NY.

On the rear brakes (Drum in Rear) I have installed new shoes, harware and wheel cylinder. The front piston of the wheel cylinder keeps over extending and blowing out. This keeps happening after brakes are adjusted. The rear shoes do not seem to be moving. I have never had this problem before! I am also used to doing disc brakes so my memory on drums is very dated. I have followed direction and done all that I believe I should but this continues to occur. Initial adjustment while on the stands seems to be OK but after testing this problem occurs (sometimes days later). What can I do!
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11-26-2013, 08:25 PM
Post: #2
RE: Wheel Cylinder blow out
Obviously something is not right. Perhaps the cyl or shoes are not the correct application? Perhaps the one shoe is upside down and not sitting right? Hard to say from here but something is allowing the cyl to over extend. Is it possible the adjuster is screwing itself in so the cyl needs to travel more? Have the drums been machined over spec? Did you compare the new parts to the old parts carefully? Again, hard to say from here without being able to see things.
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11-27-2013, 01:14 AM (This post was last modified: 11-27-2013 11:39 AM by Rupe.)
Post: #3
RE: Wheel Cylinder blow out
My question is when you changed the wheel cylinder did you change the one on the other side.... I have always been told that when it comes to changing the wheel cylinders you always change them in pairs..... if you dont change them in pairs then when you apply the brakes you will not have equal pressure on each sides
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