Front brake cylinder.

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rob needs
Posts: 134
Joined: Thu Feb 09, 2006 9:41 pm
Location: Bristol, Gateway to the west.

Front brake cylinder.

Post by rob needs »

Things were going well,for a bit :D But the thread on the front brake cylinder has now had it.Is it worth trying to put a heli coil in? thinking it might not work even if it was done (air tight and all that stuff)

Does the club have any,its the one with the bleed valve on.The threads on the pipe union look ok.
Drummond Black
Posts: 448
Joined: Sun Apr 16, 2006 10:38 am
Your interest in the forum: Jowett Jupiter, Jowett Javelin, Rover 75 (s)
Given Name: Drummond
Location: Kirkliston, SCOTLAND

FRONT BRAKE CYLINDER

Post by Drummond Black »

Rob, Dont risk a helicoil for pure safety reasons. Give us a bit more info. Is it a full hydraulic system, which I tend to think it is. Which side is it. You should be able to get spares from the club but failing that I should have a good S/H one which with new seals should suffice.

Drummond
rob needs
Posts: 134
Joined: Thu Feb 09, 2006 9:41 pm
Location: Bristol, Gateway to the west.

Post by rob needs »

Drummond it is the full hydraulic,and its the near side front that has the bleed screw on.The threads nackered on the union bridge pipe also.

I should be able to sort the pipe out locally,do you know the size of the union,i may have one off another car.I'll give the spares boys a call first and see what they have.
Cheers,
rob.
Drummond Black
Posts: 448
Joined: Sun Apr 16, 2006 10:38 am
Your interest in the forum: Jowett Jupiter, Jowett Javelin, Rover 75 (s)
Given Name: Drummond
Location: Kirkliston, SCOTLAND

BRAKE CYL

Post by Drummond Black »

Rob, Bridge pipe is no problem. We make them up here using kunifer pipe. I have about a dozen made up. Let me know about bthe cylinder. I can check the thread size. I think 1/4 UNF is correct but will check.
Drummond Black
Posts: 448
Joined: Sun Apr 16, 2006 10:38 am
Your interest in the forum: Jowett Jupiter, Jowett Javelin, Rover 75 (s)
Given Name: Drummond
Location: Kirkliston, SCOTLAND

BRAKE CYL

Post by Drummond Black »

Rob, Bridge pipe is no problem. We make them up here using kunifer pipe. I have about a dozen made up. Let me know about bthe cylinder. I can check the thread size. I think 1/4 UNF is correct but will check.
Drummond Black
Posts: 448
Joined: Sun Apr 16, 2006 10:38 am
Your interest in the forum: Jowett Jupiter, Jowett Javelin, Rover 75 (s)
Given Name: Drummond
Location: Kirkliston, SCOTLAND

FRONT BRAKE CYL

Post by Drummond Black »

Rob, Ignore 1/4 UNF. 3/8 UNF is correct. DB
rob needs
Posts: 134
Joined: Thu Feb 09, 2006 9:41 pm
Location: Bristol, Gateway to the west.

Post by rob needs »

Drumond that sounds good i'll PM you
rob.
Peter Holden
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Joined: Tue Sep 02, 2008 7:45 pm

Post by Peter Holden »

With regards to the supply of the brake cylinders. The club does indeed hold these in stock. They are re manufacturered, not by the club but by a brake specialist. They are not cheap. But whats money where safety is the prime.
Using second is fine but beware there is good second hand and poor second hand. Look in the bores for scoring, there shouldn't be any, and look at the bleed valve and bypass pipe conection for damage. Quite often on second hand the bleed nipple or the by pass pipe are hard to remove and with to much force can introduce a hair line fracture in the casting. When you install the new bleed or bypass it is dificult to get a propper seal. it might seam ok when bleeding brakes and testing but it can start seaping over time and use. one spots it seaping one a quick tighten and bang its broken.
With regards to helicoiling or sleeving. Personally I would be less concerned with helicoiling, providing the casting was ok, than sleeving the the barrel, afterall a lot of modern castings are helicoiled from new. I have heard stories of sleeves moving but have had no personal experience on this
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