Re: Cortes121
Posted by HH56 On 2021/5/16 21:53:55
As long as the retaining ring is out there should only be a steel washer, fiber washer, the seal and the funny shaped piston cup retainer at the end that is sort of a guide for the rod and seat for the seal. If water got into the unit possibly some corrosion has set in and the other parts are in effect glued to the bore.
I cannot remember if the seal retainer piece is steel or aluminum but if aluminum, corrosion could have swelled both items until they are firmly attached together. If the retainer ring is out and still no cooperation after a penetrating or brake fluid soak you might protect the end of the rod and then clamp it in a vise. Pull back on the master with a few sharp tugs and see if it separates. If corrosion is the issue there is every chance the rod or the cylinder or washer will need to be replaced.
There is a thread herehttps://packardinfo.com/xoops/html/modules/newbb/viewtopic.php?start=0&topic_id=21821&order=ASC&status=&mode=0 where another BTV was stubborn. Ross had some ideas and PackardDon detailed the replacement parts and where to buy the repro rod and master casting. On the repro casting, the relief port is not drilled. This was a huge discussion a few years ago when it was found one of the rebuilders was filling the port with silicone. It is felt by other rebuilders that this port is definitely needed and should be drilled before installing the repro casting.
Attach file:
BTV .jpg (100.32 KB)
I cannot remember if the seal retainer piece is steel or aluminum but if aluminum, corrosion could have swelled both items until they are firmly attached together. If the retainer ring is out and still no cooperation after a penetrating or brake fluid soak you might protect the end of the rod and then clamp it in a vise. Pull back on the master with a few sharp tugs and see if it separates. If corrosion is the issue there is every chance the rod or the cylinder or washer will need to be replaced.
There is a thread herehttps://packardinfo.com/xoops/html/modules/newbb/viewtopic.php?start=0&topic_id=21821&order=ASC&status=&mode=0 where another BTV was stubborn. Ross had some ideas and PackardDon detailed the replacement parts and where to buy the repro rod and master casting. On the repro casting, the relief port is not drilled. This was a huge discussion a few years ago when it was found one of the rebuilders was filling the port with silicone. It is felt by other rebuilders that this port is definitely needed and should be drilled before installing the repro casting.
Attach file:
BTV .jpg (100.32 KB)
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