Hope Piston Seals - How To Guide For Lever Piston Seal Replacement - This Video Could Be Shorter!
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- เผยแพร่เมื่อ 26 ก.ค. 2024
- A video about replacing seals for Hope master cylinder pistons.
This is I feel works for all master cylinder pistons in the Hope range. This one in the video is the TECH piston but the process is the same on the other Hope master cylinders.
Tech 3 piston seals are probably the most difficult to fit. .
00:00 Intro
00:35 Problem with seal
00:53 Dust seal (Specific issue with TECH lever)
01:25 Try not to get your new seals dirty
01:42 Removing seals
03:10 The seals are different sizes internally
03:40 Comparing new and old seals
04:13 Throw away your old seals to avoid using them again by mistake
04:33 Installing the seal with the larger internal diameter
06:20 Installing the seal with the smaller diameter (tends to be more difficult)
07:05 Slow lever return? Random extra information - กีฬา
Thank you, ordered some new seals, let’s see if that will fix my problems!
It's worth checking inside the master cylinder where the piston goes to see if there is any metal that has rubbed away. Sometimes the master cylinder body gets scratched inside and that can lead to problems also.
@@Chambers36TheEnter thanks for the hint. BTW, do you know of any changes to the master cylinder shortly after tech 4s were released? I did read in Mtb forums that there were some issues with tech 4s from the first batches. Changing the master cylinder solved the problem. But not sure if there was a change to the cylinder or if it was a production issue.
@@BiecherBender I'm not too sure if they made any changes to the tech 4.
Hello and thank you for the video. I replaced the seals according to the instructions, which was pretty quick. My problem, however, is getting the rod with the seals back into the housing, as the seals spread apart when inserted. Do you also have a video of this part of the maintenance so I can see how you do it? That would be really good. Best regards.
Hi
That's just a case of doing small circles rather than pushing the it straight down.
Something like this - th-cam.com/video/fSwi0duinXQ/w-d-xo.html
love your tutorials, btw should i grease the seals before putting piston back in, or can hopes silicon lube be used just to make it little lubed since i dont think it needs much grease inside?
Thanks. You can use hopes silicone lube on the piston seals before putting them back in or even some DOT fluid. Best way I found is to not push them in straight but to push them in very softly whilst wiggling the pistons around in small circles.
Like this - th-cam.com/video/fSwi0duinXQ/w-d-xo.html
@@Chambers36TheEnter thank you very much sir.