Brake Nipple Seized. (1 Viewer)

sammypvt

Free Member
Apr 25, 2015
18
7
leeds
Funster No
36,045
MH
fiat ducato
Exp
2000
My old girl went in for a service today (1986) fiat ducato) the mechanic said the brake nipples are seized and virtually non existent. What can we do as he hasn't got a scrap yard on speed dial.
 
Sep 10, 2012
2,118
3,564
worcester
Funster No
22,842
MH
Sunliving van
Exp
2012
Time for a brake overhaul?
replacement wheel cylinders - just need a part number
drill out the old nipples and retap the threads - easy to get new nipples

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rupert

Funster
Nov 23, 2014
198
199
Funster No
34,332
MH
c class
Exp
caravaning on and off 10 years
if were talking bleed nipples they are as hard as the devils nutting bag (not easy to drill)
 

Tootles

Funster
Deceased RIP
Sep 14, 2013
9,511
34,799
Lancaster
Funster No
28,093
MH
Coachbuilt
Exp
Was a newbie, now a Middie.
if were talking bleed nipples they are as hard as the devils nutting bag (not easy to drill)
And the solution I have used before today.........Undo the brake hose half a turn, and bleed through that, locking back up after every pump. (y)
 
Jan 22, 2013
1,247
58,436
London SE
Funster No
24,385
MH
A class Adria vision I707
Exp
since 1971
The nipples have a taper seat and drilling out will destroy them,
Nipples are not standard! There are many types / diameter/taper/thread,
The easiest way is a small needle flame to keep the heat localised to the nipple and gently ease it loose, warning! Brake fluid is flammable so any leakage as the nipple undoes May ignite but a wet rag will sort it out,
Now after saying that! I wouldn't bother, if the corrosion is extensive I would replace the cylinders/ calliper, in the great scheme of things fitting new brake components is the safest thing to do, also bare in mind the brake fluid is probably well past it sell by date so should be completely replaced with DOT4 or DOT5.1 at the same time,

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Portland

Free Member
Oct 31, 2013
923
1,424
Conwy
Funster No
28,820
MH
C class
Exp
20 years
The nipples have a taper seat and drilling out will destroy them,
Nipples are not standard! There are many types / diameter/taper/thread,
The easiest way is a small needle flame to keep the heat localised to the nipple and gently ease it loose, warning! Brake fluid is flammable so any leakage as the nipple undoes May ignite but a wet rag will sort it out,
Now after saying that! I wouldn't bother, if the corrosion is extensive I would replace the cylinders/ calliper, in the great scheme of things fitting new brake components is the safest thing to do, also bare in mind the brake fluid is probably well past it sell by date so should be completely replaced with DOT4 or DOT5.1 at the same time,
This was my first thought. But at this age the pistons will be corroded so to be safe replace the Calipers. A good motor factors will soon get them I would also look at the flexible pipes.
 
Dec 27, 2014
967
3,361
Funster No
34,567
Remove them frequently with a spark eroder.
Specialist kit so may not be easily found.
As someone has already stated..... new calipers may be the way to go.
 
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sammypvt

Free Member
Apr 25, 2015
18
7
leeds
Funster No
36,045
MH
fiat ducato
Exp
2000
Ive just been up to have a look and there is nothing left of the nipple. 2 x new calipers on order at ÂŁ65 each. Worth it though when its my life.

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MikeD

Free Member
Dec 21, 2011
3,936
3,697
London
Funster No
19,230
MH
IH PVC
Exp
Since 2012
And the solution I have used before today.........Undo the brake hose half a turn, and bleed through that, locking back up after every pump. (y)

That would work for me as well. I have a few cars in the family that have seized brake nipples. (y)
 

iceni

Free Member
Dec 3, 2007
300
117
Birmingham
Funster No
961
MH
Lowline Coachbuilt
Exp
27yrs
heat usually does it for me and one of those lock on spanners that get tighter the harder you turn.
 
Aug 6, 2013
11,941
16,534
Kendal, Cumbria
Funster No
27,352
MH
Le-Voyageur RX958 Pl
Exp
since 1999
If there's enough nipple to do it: put a flat ring spanner on, hit the nipple with a heavy hammer until it deforms & grips the spanner, then undo. It rarely fails. Another option is a LH drill. Most nipples aren't hardened (and the thread isn't tapered on any I've seen - there's a tapered seat at the end though).

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