Accidently got WD40 on Brake Disc

[TheArchitect]

As part of my post wash ritual I was WD40ing various bits of the bike and I accidently got some on my rear brake disc.

Wiped it off straight away but this morning I'm sure the rear brake felt weaker. Could be paranoia mind.

Is this a problem I should address asap? Will my rear pads get damaged?
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GSXR 600 K6 - Stolen
GSXR 600 K6 - Stolen
MT09 - Almost stolen

[Snodvan]

Done this. In my experience it is dodgy for a day but then wears off with a bit of heavy braking on a quiet road somewhere.

Snod
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04 (UK Reg) BMW F650cs, but really 02 first Reg in Holland

[Aff]

Just use the brake a bit and you will burn it off in no time.
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Current Bikes:Honda 929RR Fireblade, Honda CD200 Benly (Project), Stomp Z2 140
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[TheArchitect]

Phew! Thanks for confirming.
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GSXR 600 K6 - Stolen
GSXR 600 K6 - Stolen
MT09 - Almost stolen

[_Iain_]

I'd be inclined to spray the disc with brake cleaner & replace the pads.

Once pads are contaminated with oil they're never quite the same, given the cost is minimal and the risk is high if they should fail I'd swap em out.

But then that's just me
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Please be aware that the above post may be full of complete nonsense.
Riding: '07 KTM Duke II, Baotian BT49QT-20 Driving: '88 Volvo 340

[TheArchitect]

[Ste]

If it's soaked into the pads then that's not so great and the 'by the book' way of sorting it would be to replace the pads like Iain says.

But it's the back brake so I'd say fuck it and just carry on.

[Llama-Farmer]

I'd take the pads out, give them a good clean on the friction surface with brake cleaner, and then wipe the disc down too, then just a bit of decent moderate to heavy rear braking.

As long as the pads didn't get drenched they should be ok... although technically you ought to replace them. Maybe if they've only got a few mm left you might wanna replace them anyway.


But as Ste said, it's the rear brake... nowhere near as crucial for slowing down as front brake so should be ok... may just need to put more pressure on with your right leg to get the same bite.
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[Wull]

I wouldn't worry about it mainly because the majority of bikers don't even use their rear brake.

I use mine all the time and I've never had any prolonged effects from wd40 contamination......rear brake still works a treat.
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"Scooters are for men who want to ride motorcycles but prefer to feel the wind on their vaginas"

[Llama-Farmer]

[Pete.]

Ever hit a patch of diesel in the wet? Did you change your pads?
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a.k.a 'Geri'

132.9mph off and walked away. Gear is good, gear is good, gear is very very good

[TUG]

Brake cleaner and a thorough clean will be fine, although if it was me, I'd replace the pads, they cost nothing.
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Haz ER-5, innit!

[Llama-Farmer]

[Pete.]

[pdg]

[orac]

get the brake properly hot and it will just burn off and all will be fine.

I use WD40 for cleaning my chain, it not uncommon to get some of the disc the (over spray). noramlly after cleaning the chain i will give the bike a least rinse offre-lube chain, wait 20 mins and go for a ride to making sure i get the rear brake hot and the correct feeling comes back
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Current rides - 2016 Triumph Street Triple Rx, 1994 Suzuki Bandit 400 VM, TGB 204 Classic 125cc
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[EazyDuz]

Easiest way is to accelerate while lightly on the brake to heat it up
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To shreds you say? Tss tss tss

[Llama-Farmer]

[evoboy]

Ride it and apply the brake.

I wouldnt be worried about changing the pads. Only if you have drowned them in wd40 for a long period of time would I consider it.

I've had people come in with pads SOAKED in fork oil from leaking fork seals. They are most definitely for the bin.
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Suzuki GT250 x7------- Fazer 600------CB250RS------Aprilia Rally 70----- Bandit 600

APT Motorcycles

[orac]

[shereen]

The best way to sort this is to MTFU

HTH
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"The Internet is the first thing that humanity has built that humanity doesn't understand, the largest experiment in anarchy that we have ever had"

[chris-red]

Changing the pads is overkill IMO, its probably all in your head.

You got a bit of it on your disc right? I really wouldn't worry.
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[TheArchitect]

[jeddy11]

As stated many times in the workshop areas WD40 is a solvent and not a lubricant and should not be used as a lubricant or rust inhibitor just as a water disperser.

So if that is true your pads should be fine..
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[Aff]