other Clutch Master Cylinder - Piston Rod

[rapandi]

I pulled apart the pedal box and disconnected the clutch master cylinder. On inspecting the clutch master cylinder the piston rod appears to be bent. This doesn't look normal does it? Why would it be bent? Any idea? This is a RHD by the way. So the clutch master looks different to the LHD. I am taking it in to get serviced and resleeved if necessary. 

 

 

 

Thanks

 

Raj

Edited May 24, 2016 by rapandi

[TobyB]

I agree, that looks bent.

If the bushings failed on one side, that MIGHT bend it.  Or maybe if they then bound up, the motion of the clutch pedal

would have twisted it...

 

I'd straighten it carefully and make sure the pedal geometry was right before I went much farther...

...I'm assuming the RHD one is no longer available new?

 

t

 

[rapandi]

Thanks for that info Toby. They are available new but check the price diff between the left and the right. Insane! And that is USD. Wait till I convert to AUD and then I need to call the bank to remortgage the house!

 

Hopefully the clutch shop can fix it for me. Might have to keep an eye out for a wreck. 

 

[wegweiser]

In a pinch… you could make a new push rod. Even get "high tech" and make it a spherical bearing type, then fabricate an end suitable for the master cylinder. (US versions are adjustable, though yours doesn't look threaded.)

 

http://www.mcmaster.com/#rod-ends/=12jz2mx

[rapandi]

1 minute ago, wegweiser said:

In a pinch… you could make a new push rod. Even get "high tech" and make it a spherical bearing type, then fabricate an end suitable for the master cylinder. (US versions are adjustable, though yours doesn't look threaded.)

 

http://www.mcmaster.com/#rod-ends/=12jz2mx

 

Now that is a real good idea!!! Never knew that could be done...

 

Thanks for sharing that with me.

[rapandi]

I had a chat to the clutch resleeving guy and he said that it tends to happen if the master cylinder has not been used in a while due to which it gets jammed. Force of the clutch pedal and the jamming effect tend to bend the input piston. He will straighten it out for me. Good news.

 

In other news - My two RHD brake servos are now complete and fully rebuilt. Took me a while!

 

Raj

 

 

[OriginalOwner]

Raj,

 

Great News !!!

 

Cheers,

 

Carl

 

[GoldLion]

Hi Raj,

 

Those servos look great! Whereabouts in Bris did you get them rebuilt?  

 

Daniel

[rapandi]

3 hours ago, GoldLion said:

Hi Raj,

 

Those servos look great! Whereabouts in Bris did you get them rebuilt?  

 

Daniel

Daniel

 

thanks. I got them done on the Gold Coast. Company called south coast brake Sleeving. The owner has rebuilt several 2002 servos and he know them inside out. He does the hard basket old school stuff that no one else wants to do. These guys are very old school and did a great job. 

Edited August 2, 2016 by rapandi

[Simeon]

I might have a spare push rod that you can have. Let me have a look in the shed tomorrow and I will get back to you. 

 

The RHD and LHD clutch masters are effectively the same but the output port is on the bottom on the RHD.  I thought that it might be worth reworking the hard line to come in from the top. 

[rapandi]

7 minutes ago, Simeon said:

I might have a spare push rod that you can have. Let me have a look in the shed tomorrow and I will get back to you. 

 

The RHD and LHD clutch masters are effectively the same but the output port is on the bottom on the RHD.  I thought that it might be worth reworking the hard line to come in from the top. 

Hi Simeon

 

Yeah I too had a feeling that the LHD and RHD clutch masters are the same. It wouldn't be hard to replumb the line to the top for the LHD. 

 

If if you do find the spare push rod then that would be great. If not, no problem. Thanks. 

['76mintgrün'02]

Since I just had one apart, I will post a photo of the guts here, just for fun.

I sure had fun cleaning the sludge out of it and giving the cylinder a slight honing.

After having done this, I see them as a serviceable item... which benefits from a good cleaning once in awhile.

It seems like we just use them until they fail, then replace them; while a little service along the way might extend their lifespan.

I know this was a bit of a tangent, but at least it shows another type of push rod.  I like the look of the forged one above.  This one just looks weak, where it joins the ring.

This was before cleaning

You have probably already removed the circlip, to clean yours, but if not, hopefully this will provide some inspiration.

Tom

 

[2002haus]

Good stuff.  Thank you for sharing your experiences Tom.

['76mintgrün'02]

You're welcome.  As mentioned in another thread recently, my new replacement is leaking, so I will be putting this one back in, to replace it.  I will then pull the other one apart for inspection.

 

One thing I would like to mention is that I believe it is possible to breathe new life into the rubber bits.  I rubbed them with a microfiber cloth and some No.7 polishing compound, which is mildly abrasive.  The rag turned black from the rubber.  I believe I removed a layer of oxidized rubber in the process and the result was shiny smooth rubber.  There were no dings or scratches in those bits, so I am hopeful that I can just reuse them.  They are still nice and soft.  I just think that the outer layer needed to be scrubbed off, so it can seal again.  That is my theory anyway.  I have yet to reinstall it and see if it leaks.