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Brake Pipe Bolt Seized
Posted: 12 Jul 2025, 13:54
by maxstu
Can't separate these two. And the higher solid pipe nut is getting damaged.
Any tips please. No leaking fluid. Just sprayed with penetrating oil.
Regards
Stuart

Re: Brake Pipe Bolt Seized
Posted: 12 Jul 2025, 14:00
by davidoft1
2 sets of good quality small vice grips , works every time
Re: Brake Pipe Bolt Seized
Posted: 12 Jul 2025, 15:44
by syncroandy
Actual brake nut spanners also aren't bad

Re: Brake Pipe Bolt Seized
Posted: 12 Jul 2025, 15:57
by maxstu
davidoft1 wrote: ↑12 Jul 2025, 14:00
2 sets of good quality small vice grips , works every time
A good pair of vice grips, 11mm spanner and heat did the trick. But, l have a problem!
The new pipe is much shorter! Back to the drawing board.

Re: Brake Pipe Bolt Seized
Posted: 12 Jul 2025, 15:58
by maxstu
What a go on!

Re: Brake Pipe Bolt Seized
Posted: 12 Jul 2025, 16:30
by maxstu
syncroandy wrote: ↑12 Jul 2025, 15:44
Actual brake nut spanners also aren't bad
Just for you....

Re: Brake Pipe Bolt Seized
Posted: 12 Jul 2025, 16:46
by maxstu
The pipe should approx 430mm in length. I should have measured before removing old and fitting new.
The braking was very mediocre. So decided to refresh front brakes with new disc and pads, reconditioned calipers and new flex pipes.
The old pads are badly cracked. And discs look poor

Re: Brake Pipe Bolt Seized
Posted: 13 Jul 2025, 17:20
by maxstu
Removing the flexi pipe from near side was even more challenging. I managed to crush a finger when scaffolding pole slipped off socket while releasing caliper carrier. Then bit the inside of my mouth (chewing gum) three times in the same spot. And finally, as the hard pipe nut released l fell forward and hit head!!

lt took heat, swearing, a dremel, more swearing and one vice grip and a 14mm brake pipe spanner.
Anyway the metal pipe union nut is totally wasted. I think l should replace it? It only goes about 15" along the chassis and looks fairly accessible... is it?
Dodgy nut caused by my impatient
Dremel time. Cut down the side of the flexi pipe to release clamping pressure.

Re: Brake Pipe Bolt Seized
Posted: 14 Jul 2025, 07:16
by davidoft1
Both front brake pipes are fairly short and not to terrible to change, i rarely use pipe spanner’s they seem to round most stuff off , mini vice grips every time
Re: Brake Pipe Bolt Seized
Posted: 14 Jul 2025, 07:18
by shepster
Wrap them in denso tape once they're changed and you'll never have a problem undoing them again.
Re: Brake Pipe Bolt Seized
Posted: 14 Jul 2025, 07:33
by maxstu
davidoft1 wrote: ↑Yesterday, 07:16
Both front brake pipes are fairly short and not to terrible to change, i rarely use pipe spanner’s they seem to round most stuff off , mini vice grips every time
I agree. The small 11mm pipe spanner is useless.
A combination of grips, open spanners, larger sized pipe spanners, penetrating oil, heat and a dremel is all it takes.

Re: Brake Pipe Bolt Seized
Posted: 14 Jul 2025, 07:33
by maxstu
shepster wrote: ↑Yesterday, 07:18
Wrap them in denso tape once they're changed and you'll never have a problem undoing them again.
New one on me. Thanks for the tip.

Re: Brake Pipe Bolt Seized
Posted: 14 Jul 2025, 08:19
by Oldiebut goodie
Sylglas tape is very effective. I used to use it years ago. Messy stuff to use though.
E D I T - just looked up denso tape, seems to be the same type of tape.
Re: Brake Pipe Bolt Seized
Posted: 14 Jul 2025, 08:23
by bat
shepster wrote: ↑Yesterday, 07:18
Wrap them in denso tape once they're changed and you'll never have a problem undoing them again.
Take you a month of Sundays to get the goop off your fingers, though

Re: Brake Pipe Bolt Seized
Posted: 15 Jul 2025, 07:00
by shepster
bat wrote: ↑Yesterday, 08:23
shepster wrote: ↑Yesterday, 07:18
Wrap them in denso tape once they're changed and you'll never have a problem undoing them again.
Take you a month of Sundays to get the goop off your fingers, though
Disposable rubber gloves.