Just broke my bike, oil everywhere

[Mississippi Bullfrog]

If you're sure all the bolts are out sometimes a hot air gun on the sump will crack them loose. Aluminium conducts heat very well but the gap between the sump and the crankcase won't so a bit of thermal expansion might do the trick.

[Bianco2564]

Checked on Google, there should be 11 main bolts holding it on, on that image of a sump one of them is underneath the plate at the bottom of the pic.

[fastbob]

So how badly have you f****d it up so far ?

[James in Brum]

I got the sump off. It’s my day to be parent all day because Mrs In Brum has some uni homework. Given the weather anything else will have to wait for tomorrow. 
I know that it is the sump that broke now it is off. 
 

my question is how do I prepare the ‘new’ sump? There is a gasket still on it. How do I remove the remnants of gasket from the mating surfaces without damaging them? Is a metal scraper okay or not okay? Need to prep both sides I assume. 

[Mr Fro]

I tell you what mate, you've done a superb job of knacking the old one!

 

I use a dulled Stanley blade to remove old gaskets - just run a new blade through some cardboard a few times to take the really sharp edge off. I hold the blade in my fingers rather than putting it in a holder - that way I'm less likely to damage things...

 

Go slow and steady with the blade to avoid gouging the sump & block too much and you'll be fine.

 

Ideally you'd do both mating surfaces.

[James in Brum]

Thanks @Mr Fro, will do. 
totally fubar’d the old one. Lesson learned, my bike doesn’t get up that ramp/my stairs. If I get this all sorted I will look into better ramp situation. 

[fastbob]

As above ,  remove all gasket from both mating surfaces . I also use an old Stanley Blade but you must take enormous care not to inadvertently dig into the metal . When there is only a thin layer left I use a little bit of Scotchpad or the Toolstation equivalent combined with some Cellulose Thinners . This job can take hours to get right so be prepared . It's the engine half that I don't envy you . 

[smallfrowne]

Yeah I usually start off steady with something softer than the aluminium, like the sharpened end of a toothbrush shiv. But I always end up reverting back to using the gouging power of a nice scrapey screwdriver or a Stanley blade. Just don't go mad and get the radio on, or anything to keep you going, it's quite a boring fiddly job but you've just got to do it. I often wander off to do anything else when the cramp and rsi creeps in. Scrapey scrapey la la la scrapey scrapey la la la laaaa. It sends me mad. Upside down on a wet floor with the wind blowing the oil and flapping everything about, it'll be something to savour. 

[fredc]

practice scraping on the old sump you’re going to throw away 

you don’t need to scrape the new one 

[Bender]

As above Stanley blade at shallow angle, just take it steady there is no rush.

[TimR]

Score the gasket with a blunt blade or even rough it up with a wire brush and apply parrafin/brake and clutch cleaner / wd40 and leave it to penetrate and then as above scrape gently .

 

something like https://www.toolstation.com/stanley-window-scraper or 

https://www.screwfix.com/p/unger-mini-safety-scraper

 

 

 

 

 

[Mississippi Bullfrog]

If you're using a Stanley blade dragging it rather than pushing it will remove gasket material with less chance of gouging the aluminium.

[TimR]

8 minutes ago, Mississippi Bullfrog said:

If you're using a Stanley blade dragging it rather than pushing it will remove gasket material with less chance of gouging the aluminium.

Top idea ..

Buy a pack of disposal razors ( non guarded 

[Bender]

I prefer to use the drag method once the thick of it is off and your down to wafer thin bits that are almost bonded.

[oldgrump]

Hi @James in Brum, Well mate as @Mr Fro said, you well and truly screwed that Sump!!!!! Must admit never in this world did I expect to see a hole like that!! 

I've worked on bikes for 50 years, and I've slid 2 that I can remember, bottom first into lamp posts!! Not a hobby I like doing. But never smashed a sump like that!

Hope you get it back together ok

[James in Brum]

I’ll show photos later of what I did .

will get on with it soon. Hoping it stays dry. Need to wait for Halfords to open. I need oil, some of those thinners mentioned and scotch pads. Are they like sandpaper or scouring pads? Or neither?

[Tiggie]

 

 

[James in Brum]

Looks like a scourer? 

[Mickly]

41 minutes ago, James in Brum said:

I’ll show photos later of what I did .

will get on with it soon. Hoping it stays dry. Need to wait for Halfords to open. I need oil, some of those thinners mentioned and scotch pads. Are they like sandpaper or scouring pads? Or neither?

@James in Brum ensure you buy motorcycle specific oil, not car oil of the same grade otherwise you may well end up with clutch slippage issues.

[Stu]

15 minutes ago, Mickly said:

@James in Brum ensure you buy motorcycle specific oil, not car oil of the same grade otherwise you may well end up with clutch slippage issues.

 

Not this again  

[James in Brum]

Anything wrong with using a flap wheel? Spiny Sandy thingy?

[Bianco2564]

We have used this stuff with success on stubborn gaskets.

 

https://www.cromwell.co.uk/shop/lubricants-and-chemicals/cleaners-and-degreasers/7200-gasket-remover-aerosol-cleaner-400ml/p/LOC7255702X

[Bianco2564]

6 minutes ago, James in Brum said:

Anything wrong with using a flap wheel? Spiny Sandy thingy?

Too coarse and will damage the ally and spit bits of gasket everywhere including inside the engine

[smallfrowne]

Don't forget to only use bike specific scotchbrite sheets as well. I get mine from home bargains. 

[Mr Fro]

Just now, James in Brum said:

Anything wrong with using a flap wheel? Spiny Sandy thingy?

Yeah, you might take a load of the sump off!

 

I use these on @fastbob's recommendation: https://www.toolstation.com/contour-sanding-pads/p10736. I'm really impressed although I still use a blade to remove gaskets.