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<DIV>In a message dated 6/3/2013 7:46:45 P.M. Eastern Daylight Time,
asterrett2010@att.net writes:</DIV>
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<DIV><FONT style="BACKGROUND-COLOR: transparent" color=#000000 size=2
face=Arial>I have purchased 2 new rear brake cylinders and I am hoping at this
time they will correct the problem. When I attempt to bleed the brakes
the rear shoes brake, but will not release. If they are not the total
problem then the Master Cylinder comes in question. It was rebuilt by
Jim back when I was restoring the car and the brakes have worked fine until
last week. The Master Cylinders are not available any more so I guess I
will have to pull this one and send it back to Jim for a rebuild unless
someone has a new one or a good working one to sale for a 1971
Fastback?<BR><BR>If you put a new or rebuilt master cylinder in your car is
their any special things you should do, such as bleeding the master
cylinder? What is the procedure for bleeding a master cylinder?
Will wait to hear from you guys before attempting to purchase a new master
cylinder from someone.</FONT></DIV><FONT style="BACKGROUND-COLOR: transparent"
color=#000000 size=2 face=Arial></FONT></BLOCKQUOTE>
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<DIV><FONT style="BACKGROUND-COLOR: transparent" color=#000000 size=2
face=Arial></FONT> </DIV>
<DIV><FONT style="BACKGROUND-COLOR: transparent" color=#000000 size=2
face=Arial>I'd look into replacing the rear hoses before I pulled the master
cylinder for rebuilding. Rear hoses don't god bad as often as fronts do, but
the hoses do have a tendency to collapse internally. When this happens, the
brakes don't release. Like I said, more common with the fronts. </FONT></DIV>
<DIV>Rear wheel cylinders are common, and available at most places.</DIV>
<DIV><FONT style="BACKGROUND-COLOR: transparent" color=#000000 size=2
face=Arial></FONT> </DIV>
<DIV><FONT style="BACKGROUND-COLOR: transparent" color=#000000 size=2
face=Arial>I've had Jim rebuild several master cylinders over the years (along
with calipers), and about the only thing "special" I do, is make sure the
reservoir is full before I start bleeding the system. The other thing I do, is
make sure I have 1mm of clearance between the push rod and the master cylinder
cup. Without that gap, you cover the compensating ports, which doesn't allow
the brakes to release, or re-fill the chambers in the master cylinder.</DIV>
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<DIV><FONT lang=0 size=2 face=Arial FAMILY="SANSSERIF" PTSIZE="10">Bob 65
Notch S w/Sunroof and IRS aka Krusty<BR>64 T-34 Ghia aka Wolfie<BR>71
Square-vert under
construction</FONT></DIV></DIV></FONT></BLOCKQUOTE></DIV></FONT></BODY></HTML>