[Rovernet] GIRLING Front brake rebuild

[Jim Pile]

 Thanks, Vern, for-reposting.
I've gotten the old pistons out and replaced them with new, but getting the seals to stay in the housing groove while re-inserting the piston has been a repetitive chore, since each time the seal pops out I have to blow out the piston all over again. I've scraped the grooves so that they look clean, but each time I insert the piston, the seal comes loose from the groove. Grrr... maddening. Life has since intervened, but I'll be addressing those darned seals next week.       -   Jim
    On Friday, September 5, 2025 at 01:21:03 PM EDT, Vern Inkspot via Rovernet <rovernet at rovernet.org> wrote:   

 Note to all, this was an old message from early July that I missed, it got hung up becasue the pictures made it big enough I had to give admin approval.
YoursVern


On Jul 3, 2025, at 4:19 PM, Jim Pile via Rovernet <rovernet at rovernet.org> wrote:
In response, the old pistons were pitted, so these are new pistons I am attempting to install. As you might be able to tell from the second photo, the end of the new piston that goes into the housing is, in fact, rounded, but it is not exactly the same as the old one. All the dimensions look identical.   Also, while the old piston was flat, the new piston is indented. I'm not sure why the change. Was that a technical improvement, or was it simple to save money for the manufacturer? Obviously, it would require more fluid to stay in the housing.   All of that being said, do I simply find a way to evenly force the piston into the housing, despite the advice from the manual?

<69TC PISTON 1.jpeg><69TC PISTON 2.jpeg>
<69TC PISTON 1.jpeg><69TC PISTON 2.jpeg>_______________________________________________
Rovernet mailing list
Rovernet at rovernet.org
http://rovernet.org/mailman/listinfo/rovernet_rovernet.org



inkspotco.com · 250 864 5619 · in at inkspotco.com
_______________________________________________
Rovernet mailing list
Rovernet at rovernet.org
http://rovernet.org/mailman/listinfo/rovernet_rovernet.org
  
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://rovernet.org/pipermail/rovernet_rovernet.org/attachments/20250905/31d63f22/attachment.htm>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: E-mail Signature logo.png
Type: image/png
Size: 22660 bytes
Desc: not available
URL: <http://rovernet.org/pipermail/rovernet_rovernet.org/attachments/20250905/31d63f22/attachment.png>