Ducati Monster Forum

Moto Board => Tech => Topic started by: r_ciao on September 10, 2008, 11:31:15 AM

Title: squeaky rear brake post-600 mile service
Post by: r_ciao on September 10, 2008, 11:31:15 AM
Just had the 600 miles service done on my 696, but the rear brake now emits an embarrassing squeaky metallic noise when coming to a stop. The noise is most notable and noticeable just before coming to a complete stop.

Questions? Will it work itself out? Did the dealer possibly adjust something during the 600 mile service that would cause this?

Advice please.
???
Title: Re: squeaky rear brake post-600 mile service
Post by: RBX QB on September 10, 2008, 12:52:34 PM
Good info here...

http://ducatimonsterforum.org/index.php?topic=1159.0 (http://ducatimonsterforum.org/index.php?topic=1159.0)
Title: Re: squeaky rear brake post-600 mile service
Post by: LA on September 10, 2008, 01:14:31 PM
Mine rear brake started squealing lately as I come to a stop, but I don't think it's in the least embarrassing. [roll]

Considering what brakes do, I'm amazed they don't squeal all the time.
LA
Title: Re: squeaky rear brake post-600 mile service
Post by: r_ciao on September 10, 2008, 01:58:59 PM
Quote from: RBX QB on September 10, 2008, 12:52:34 PM
Good info here...

http://ducatimonsterforum.org/index.php?topic=1159.0 (http://ducatimonsterforum.org/index.php?topic=1159.0)

Thanks RBX QB for the link.  Is it hard/complicated to remove then re-install the pads?
Title: Re: squeaky rear brake post-600 mile service
Post by: golgofett on September 14, 2008, 04:22:07 PM
I have had the same problem for a while now.  I asked the dealer to check it at the 600 mile service, and the service tech noted that there was no abnormal noise from the rear brake.  After about 5 minutes of riding home from the dealer, the squeak was back.  I wonder if they even road tested it. ( Next time, I will set the tripometer with a certain amount of miles)  I have hit it with an air compressor before, and the noise went away for one short trip.  It comes back so I have no clue what the problem is either. 
Title: Re: squeaky rear brake post-600 mile service
Post by: gearhead on September 14, 2008, 05:46:28 PM
   I removed the rear wheel so I could get a good shot of brake cleaner on it and blasted it. Problem solved now for 2000 km.
Title: Re: squeaky rear brake post-600 mile service
Post by: Spidey on September 14, 2008, 05:52:45 PM
Please note that gearhead said that he removed the rear wheel before hitting it with brake cleaner.  The last thing you want to do is hit the pads with brake cleaner while they're still on the bike and accidentally get some of that cleaner in the wheel bearings or axle. 

You guys use your rear brakes that much?
Title: Re: squeaky rear brake post-600 mile service
Post by: CairnsDuc on September 15, 2008, 02:08:56 AM
I use my rear brake quite a bit, I replaced the rear pads with some Ferodo Platinums and they made quite a bit of difference to the stopping power and feel, now if they start to squeak it means I need to do a run into the mountains and get rid of the glaze on the pads.

Mine used to squeal really badly with the OEM pads, ditch those crappy pads ASAP

And your rear brake is very handy for filtering through tight traffic or keeping the bike stable while cornering.
And very handy when it's raining.

Title: Re: squeaky rear brake post-600 mile service
Post by: gearhead on September 15, 2008, 03:18:02 AM
 I always use both brakes, front and rear when I slow or stop.
Title: Re: squeaky rear brake post-600 mile service
Post by: clubhousemotorsports on September 15, 2008, 06:04:48 AM
Most squealing from brakes is due o build up between the pads and rotor so a good cleaning should help. You will want to surface the pads to remove any glaze as well.
The rear brake will build up material between the pads and rotor with hard use. On a Ducati stopping the bike from 10 mph with the rear brake is "hard use", my bike had no squeal until I was screwing around locking my rear brake for fun. It sounded like a bus until I cleaned it up.

Different pads will build up at different rates, weak pads seem to squeal more than aggressive pads probably due to the fact you do not need to stand on them quite as much. ;)
Title: Re: squeaky rear brake post-600 mile service
Post by: Armor on September 15, 2008, 09:17:22 AM
When you lube your chain, some spins off on to the rim and some could end up on the rear brake rotor.  The pads come out real easy.  Remove the pads and clean/sand them.
Title: Re: squeaky rear brake post-600 mile service
Post by: r_ciao on September 15, 2008, 02:41:34 PM
Quote from: ducvet on September 15, 2008, 06:04:48 AM
On a Ducati stopping the bike from 10 mph with the rear brake is "hard use", my bike had no squeal until I was screwing around locking my rear brake for fun.

Does that mean you normally don't use the rear brake that much?  Don't most people use both brakes?
Title: Re: squeaky rear brake post-600 mile service
Post by: Spidey on September 15, 2008, 02:53:59 PM
Quote from: r_ciao on September 15, 2008, 02:41:34 PM
Does that mean you normally don't use the rear brake that much?  Don't most people use both brakes?

I use my rear brake if I'm stopped on a hill, if I go off into dirt or if I'm doing a wet/gravelly ride.  I pretty much don't touch it otherwise.
Title: Re: squeaky rear brake post-600 mile service
Post by: ducpainter on September 15, 2008, 05:54:22 PM
Quote from: Spidey on September 15, 2008, 02:53:59 PM
I use my rear brake if I'm stopped on a hill, if I go off into dirt or if I'm doing a wet/gravelly ride.  I pretty much don't touch it otherwise.
+1

Wet alone isn't even a reason to use the rear for me.

It has to be dirt.
Title: Re: squeaky rear brake post-600 mile service
Post by: NekkedChic on June 17, 2009, 07:43:25 AM
Mine did this a LOT until about 1K miles for some reason. Haven;t heard a peep in miles now, at over 7800K. But, it COULD be also I use less n less rear brake, the more I have been riding now.  I use rear occasionally to "trail" or in slow traffic, DEF whenever on dirt/sand and ONLY rear then in fact.  Guess my track days are teaching me more front, NO rear brake LOL 
Title: Re: squeaky rear brake post-600 mile service
Post by: ducatiz on June 17, 2009, 07:50:54 AM
squeaky brakes can be due to a lot of things.

removing the pads regularly, cleaning them off and (some of you will not agree) sanding them is a great way to keep your brakes in top notch shape.

why?  the brake surface starts to wear uneven.  the trick is to keep it flat and mated to the friction surface.

it doesn't take long.  you don't need to remove the caliper to pull the pads out. 

i use an orbital sander with 3/0 grit emery paper (i.e. very fine).  pull the pads off, clean them with brake parts cleaner and a plastic wire brush, then lay them out on newspaper on the driveway so they are flat.  use the sander for like 2 seconds and check..  you should get a nice flat surface, evenly sanded.

re install them with brake anti-squeal on the back, just a little, where the pucks make contact and the sides.

your rotors will last 10x as long as well, they'll wear evenly.

tools i use:

orbital sander (small)
punch (to take pad pins out)
small hammer (to hit punch)
plastic wire brush
needle nose pliers

i think that's it.  usually takes about 20 minutes start to finish for the front

one nice thing is that you do NOT need to put the pads back into the same location since they are renewed.

ride the brakes gently for 50-100 miles and you are good.