Yes, agree with Steve, there should be a thin layer of grease between the disk and hub face to stop it rusting. I actually use moly grease rather than copper grease as copper grease seems to still allow corrosion, at least for me.

Check your brake pads before you put grease on the back of them, a lot nowadays have glue on the back designed to stick the pads to the caliper to stop squealing. Some are self adhesive, some are less obvious and have a glue area that is hard but i guess melts the first time the pads get hot.

Jim


-----Original Message----- From: 'Steve Kodź' via Quantum Owners Group
Sent: Friday, May 18, 2018 8:29 AM
To: quantumowners@googlegroups.com
Subject: Re: [Quantum Owners] Removing brake discs 2+2

Derek,

I tend to put copper grease on the inside face of the discs, as like you
said they rust.  Just be careful to spread thin and even, otherwise
there is potential to have the disc slightly wonky, which will make the
disc feel like it's warped.  I also use copper grease on the back of the
pads too.

Regards,
Steve


On 17/05/18 16:38, Derek Clews wrote:
Dear All,

For info. & questions.

My front brake discs had been on the car since I built it and were getting rusty, so time for a change. Problem was I could not get the discs of the hub. Soaking in WD40 and a mallet was getting nowhere. In the end I bought a very large hydraulic puller that needed all its strength to get them loose. (and also broke both of them in the process!) The problem seemed to be just a rust area around the inside of the discs alongside the hub edge. Hubs seem to be in very good shape so the rust was all from the disc. Already bought stainless steel hex counter sunk screws for the new discs.

Q. 1. Does this mean that disc replacement should be time related as well as mileage? (and obviously on condition)

Q 2. Do any of you assemble the disc to the hub using e.g. copper grease to help release later? Does it work on brake discs?

Derek


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h4-turbo.co.uk
quantumowners.club

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