Oil on the rear disc brake

[Adam barber]

I was spraying chain lube on the chain and some rear break components and managed to get some directly on the disc. When I rode the bike straight after the rear brake was very slow to react, and I had to take it very slow as I had to stand on the break hard to get anything out of it. Will this fix itself or do I need to get something to clean it? I did give it a good wipe down but haven't been out on it again yet

[Stu]

Hi and welcome 

 

Replace the pads and clean the disc with brake cleaner 

[Bender]

2 minutes ago, Stu said:

Hi and welcome 

 

Replace the pads and clean the disc with brake cleaner 

As it's the rear I would be cleaning the disc and the pads and roughing them up slightly and trying it again before buying new but I'm halfway between Scotland and Yorkshire  

[bonio]

I'd get a load of brake cleaner the disc and pads first, and only replace the pads if that doesn't fix it. 

But I'm lazy. 

[onesea]

Wash the disc and area with soapy water.  Go for ride, ride for a few minutes with brake on slightly till it feels better.

 

Change what ever you feel needs changing, however IMHO it's physiological not mechanical. Unless you can feel fractions of a % in breaking.

 

Edit to add I have had Oil/ grease on my discs countless times and ACF50.  Oil I generally wash off before riding, ACF50 burns off fairly quickly.

Edited March 3, 2023 by onesea

[Fender1515]

I would and do spray the disk with break cleaner and rub with emery cloth,  spray again wipe of with absorbent towel.

Use a piece of cardboard behind the disk to keep the break cleaner of the black stuff & wheels, good idea to do this when oiling chain.