Go Back  Bike Forums > Bike Forums > Bicycle Mechanics
Reload this Page >

Clean and lube disc-brakes

Notices
Bicycle Mechanics Broken bottom bracket? Tacoed wheel? If you're having problems with your bicycle, or just need help fixing a flat, drop in here for the latest on bicycle mechanics & bicycle maintenance.

Clean and lube disc-brakes

Old 08-25-18, 06:42 AM
  #1  
smurof
Senior Member
Thread Starter
 
Join Date: Jun 2018
Posts: 64
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 13 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Clean and lube disc-brakes

was a nice video.

But i wonder if i can use discbrake cleaner insted of degreaser?.. or will that damage the pistons.
I have never cleand the caliper this way. only with bikewash and water and draged a cloth through it. And some times discbrake cleaner.
(i use d.b.-cleaner regulary on pads and rotors)

And is any kind of degreaser ok? Like muc off?

And.. is teflon-oilspray ok?

And my normal web-shop is sold out on Park Tool SAC-2 and it seems to me like TF2 Lubricants Unisex Carbon Fibre Gripper Paste for Bikes, is much of the same.

Thanks for any tips and help.

sorry for poor english
smurof is offline  
Old 08-25-18, 09:48 AM
  #2  
fietsbob
Banned
 
Join Date: Jun 2010
Location: NW,Oregon Coast
Posts: 43,599

Bikes: 8

Mentioned: 197 Post(s)
Tagged: 0 Thread(s)
Quoted: 7607 Post(s)
Liked 1,336 Times in 844 Posts
You talking about lubricating the internal parts of a mechanical disc brake caliper? which one?

nothing that leaves any residue should be used on the disc,
and nothing at all should be on the disc pads.

remove them first..

there may be a glazing from use on the friction material,
I use a sand paper for metal, to remove that glazing

with the flat surface of a table behind the abrasive paper..




...

Last edited by fietsbob; 08-25-18 at 09:52 AM.
fietsbob is offline  
Old 08-25-18, 09:55 AM
  #3  
Wheever
Senior Member
 
Join Date: Jun 2014
Location: Stamford, CT; Pownal, VT
Posts: 1,141

Bikes: 2015 Trek Domane 6 disk, 2016 Scott Big Jon Fat Bike

Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
Quoted: 147 Post(s)
Liked 8 Times in 6 Posts
I would only use disc brake cleaner on the rotors themselves. Even hough it's supposed to be fine for *automotive* caliper seals and whatnot, I wouldn't chance it on a bike.

I spray some on a rag and wipe the rotors. Oh, and only in a well-ventilated place!
Wheever is offline  
Old 08-25-18, 04:37 PM
  #4  
smurof
Senior Member
Thread Starter
 
Join Date: Jun 2018
Posts: 64
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 13 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Originally Posted by fietsbob View Post
You talking about lubricating the internal parts of a mechanical disc brake caliper? which one?

nothing that leaves any residue should be used on the disc,
and nothing at all should be on the disc pads.

remove them first..

there may be a glazing from use on the friction material,
I use a sand paper for metal, to remove that glazing

with the flat surface of a table behind the abrasive paper..




...
I know how to clean the pads and rotor.... my question is about the pistons. The video show hydraulic brakes... like I have.
smurof is offline  
Old 08-25-18, 10:11 PM
  #5  
smurof
Senior Member
Thread Starter
 
Join Date: Jun 2018
Posts: 64
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 13 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Originally Posted by Wheever View Post
I would only use disc brake cleaner on the rotors themselves. Even hough it's supposed to be fine for *automotive* caliper seals and whatnot, I wouldn't chance it on a bike.

I spray some on a rag and wipe the rotors. Oh, and only in a well-ventilated place!
I do all my bike-fix on my balcony, so thats safe.

So d.b.cleaner inside the caliper is " no-good" ?
smurof is offline  
Old 08-25-18, 10:21 PM
  #6  
Cyclist0108
Occam's Rotor
 
Join Date: Jul 2013
Posts: 7,248
Mentioned: 61 Post(s)
Tagged: 0 Thread(s)
Quoted: 2366 Post(s)
Liked 2,328 Times in 1,161 Posts
Originally Posted by smurof View Post
I know how to clean the pads and rotor.... my question is about the pistons. The video show hydraulic brakes... like I have.
He only reads the titles of threads and replies based on the first thing that pops into his head. He ignores the contents of the post. Best to put him on ignore.

Normally I clean the pistons with a dry paper towel. On a few occasions I will spray a little bit of WD-40 onto the paper towel (far away from the bike) and then do the same thing, mainly to remove residue that accumulates and causes the piston to stick or retract slowly.

The only thing I have cleaned pads with is sandpaper.

The only thing I have cleaned rotors with is isopropanol.
Cyclist0108 is offline  
Old 08-25-18, 11:33 PM
  #7  
cpach
Senior Member
 
Join Date: Oct 2009
Location: Mt Shasta, CA, USA
Posts: 2,059

Bikes: Too many. Cannondale SuperSix, Trek Remedy 8, Trek Crossrip+ get the most ride time.

Mentioned: 26 Post(s)
Tagged: 0 Thread(s)
Quoted: 493 Post(s)
Liked 271 Times in 208 Posts
Most manufacturers service documents recommend isopropanol sometimes with the hydraulic fluid as lube. If you use hydraulic fluid do so very sparingly and clean afterwards with the pistobs retracted.
cpach is offline  
Old 08-26-18, 01:33 AM
  #8  
smurof
Senior Member
Thread Starter
 
Join Date: Jun 2018
Posts: 64
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 13 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Originally Posted by cpach View Post
Most manufacturers service documents recommend isopropanol sometimes with the hydraulic fluid as lube. If you use hydraulic fluid do so very sparingly and clean afterwards with the pistobs retracted.
But if i want to do it like the video.... is it ok to switch from park tool paste tf2 paste. Maybe i'm naive but I trust that video does not harm my brakes.
And is isopropanol and disc brake cleaner (like muc off) the same?
smurof is offline  
Old 08-26-18, 05:35 AM
  #9  
HerrKaLeun
Senior Member
 
Join Date: Mar 2017
Location: Madison, WI
Posts: 1,923

Bikes: Giant Toughroad SLR1 and Motobecane Sturgis NX

Mentioned: 10 Post(s)
Tagged: 0 Thread(s)
Quoted: 900 Post(s)
Liked 228 Times in 166 Posts
I only clean rotors after i re-install wheel or did some other activity that made me touch the rotor or got it possibly contaminated. For example when i service my hubs I fiddle with grease hands and may contaminate the rotors. After such work i always clean them.
I use up an old can of brake cleaner, but will switch to mineral spirits once that is used up. No need to clean pads, also no use. Pads need to be replaced after contamination.
I don't think alcohol is suitable since it is polar (like water) and doesn't dissolve non-polar things like oil and grease.

Don't sweat it, cars have been driving on disc brakes exposed to saltwater etc. and no one is cleaning them. Bike rotors are more exposed, though. But motor bikes also work fine and I doubt Hell's angels spend a lot of time cleaning rotors.
HerrKaLeun is offline  
Old 08-26-18, 12:45 PM
  #10  
smurof
Senior Member
Thread Starter
 
Join Date: Jun 2018
Posts: 64
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 13 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Originally Posted by HerrKaLeun View Post
I only clean rotors after i re-install wheel or did some other activity that made me touch the rotor or got it possibly contaminated. For example when i service my hubs I fiddle with grease hands and may contaminate the rotors. After such work i always clean them.
I use up an old can of brake cleaner, but will switch to mineral spirits once that is used up. No need to clean pads, also no use. Pads need to be replaced after contamination.
I don't think alcohol is suitable since it is polar (like water) and doesn't dissolve non-polar things like oil and grease.

Don't sweat it, cars have been driving on disc brakes exposed to saltwater etc. and no one is cleaning them. Bike rotors are more exposed, though. But motor bikes also work fine and I doubt Hell's angels spend a lot of time cleaning rotors.
No need to clean pads?... so all the hint and tips I have seen/heard.. it's just a watse of time?.... I usualy take out the pads and clean them d.b. cleaner 2-4 times a month.... and the rag gets black.... so i feel there is a point

And discbrake cleaner is not sutibale for pads? hmmm.... again videos and tips say so....

Last edited by smurof; 08-26-18 at 12:58 PM. Reason: Ad more info
smurof is offline  
Old 08-26-18, 06:34 PM
  #11  
HerrKaLeun
Senior Member
 
Join Date: Mar 2017
Location: Madison, WI
Posts: 1,923

Bikes: Giant Toughroad SLR1 and Motobecane Sturgis NX

Mentioned: 10 Post(s)
Tagged: 0 Thread(s)
Quoted: 900 Post(s)
Liked 228 Times in 166 Posts
Originally Posted by smurof View Post
No need to clean pads?... so all the hint and tips I have seen/heard.. it's just a watse of time?.... I usualy take out the pads and clean them d.b. cleaner 2-4 times a month.... and the rag gets black.... so i feel there is a point

And discbrake cleaner is not sutibale for pads? hmmm.... again videos and tips say so....
Do you have a car? Do you do the same for those rotors and pads?

The cleaner won't hurt the pads, but if they are contaminated, you won't be able to wash the grease out. Some people sanded off the pads in the hope only the very upper layer is contaminated. Ultimately contaminated pads needs to be replaced.

I'm not sure if you are jesting, but do you frequently contaminate your pads and rotors? Maybe that needs to be resolved. you know squealing brakes are not cured by lubricating. but I'm sure there is a video of recommending exactly that.
HerrKaLeun is offline  
Old 08-26-18, 11:01 PM
  #12  
smurof
Senior Member
Thread Starter
 
Join Date: Jun 2018
Posts: 64
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 13 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Originally Posted by HerrKaLeun View Post
Do you have a car? Do you do the same for those rotors and pads?

The cleaner won't hurt the pads, but if they are contaminated, you won't be able to wash the grease out. Some people sanded off the pads in the hope only the very upper layer is contaminated. Ultimately contaminated pads needs to be replaced.

I'm not sure if you are jesting, but do you frequently contaminate your pads and rotors? Maybe that needs to be resolved. you know squealing brakes are not cured by lubricating. but I'm sure there is a video of recommending exactly that.
I dont have a car, and i dont touch the pads with dirty/fatty fingers.
And never use oil around the brake parts

I just like to maintain my bike with tips and hints that i see around

Last edited by smurof; 08-26-18 at 11:18 PM. Reason: Ad more info
smurof is offline  
Old 08-27-18, 07:46 AM
  #13  
smurof
Senior Member
Thread Starter
 
Join Date: Jun 2018
Posts: 64
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 13 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Case closed.
smurof is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
bittermilkman
Bicycle Mechanics
11
10-16-17 11:17 AM
epnnf
Bicycle Mechanics
17
08-02-17 10:07 PM
alathIN
Bicycle Mechanics
1
02-23-17 06:59 AM
avidone1
General Cycling Discussion
11
08-26-15 12:16 PM
Raiden
Bicycle Mechanics
22
07-25-10 09:35 PM

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off


Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service - Do Not Sell My Personal Information -

Copyright 2021 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.