Advice regarding a problem

[Bren]

Having done the n/s rear brakes on my SD1 (shoes and cylinders), I have a problem with the o/s in that the screw which holds the copper pipe in the rear of the cylinder is mullered - despite using shock and unlock and plus gas it wont budge - it just rounds off more.

 

The only thing I have heat wise is my trusty MIG - I was thinking of trying to get a bit of weld on to the rear of the cylinder to make it expand, the pipes themselves look like they are made from Kunifer, so care will be needed.

 

Assuming I get it free I will need to borrow a flaring tool as it will certainly need a new screw.

 

Does any body have any other ideas?

[dollywobbler]

The usual trick of 'hammer a smaller socket on it' won't work, but you might be able to hammer a smaller spanner onto it. I used this technique to successfully remove a rusted bleed nipple from a brake caliper last year. The shock of the spanner being forced on may help loosen things up too.

[meggersdog]

Small stilsons or molegrips.Once you have the end moving you could undo the wheel cylinder from the backplate then unscrew it from the pipe

[M'coli]

The only thing I have heat wise is my trusty MIG

Any meths/aftershave? Wrap a small bit of rag around a screwdriver of something and soak it in something flammible, then light it!

[Des]

Cut the pipe out of the way and you will be able to perform the hammer and socket procedure.

[Richard]

Chop the pipe off and MIG weld a nut on, this heats things up nicely and gives you something to put a spanner on.

[Bren]

I tried laying some tacks down on the back of the cylinder with my MIG - even the heat would not help matters.

 

In the end I had to saw through the port on the rear of the cylinder where the pipe fits - once cut through I wound the remainder of the cylinder away.

 

The screw was solid on the pipe - two hacksaw cuts down the length of the screw were required to get it off.

 

Now I need a flaring tool to put a flare on the pipe so I can refit it to the cylinder.

 

Deffo a stubborn bugger.