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 CARC oil leak

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voulga77
Don Abbondio
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PostSubject: CARC oil leak   Wed Oct 18, 2017 2:14 am

Hello everybody,
carc leak for the second time in 2000km!

First time occured after a rear wheel removal.
I only changed the big oil seal and put 350ml of oil.


Now it happened again. As you can see the leak is major, there's oil all around the rim.

Look like oil has come out of the breather too (too much oil?)

Turning the rear wheel by small increments couldn't fell any "play" meaning explicit bearing fail.


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Any ideas?
I freak out in the idea of pulling the carc apart...
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avgpetro
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PostSubject: Re: CARC oil leak   Wed Oct 18, 2017 5:04 am

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I believe its a 2006 breva 1100? How many km on the clock?

Same thing happened to me, about 10 years ago, mine issue was fixed under guarantee becouse of this:
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Check your VIN number, to clarify if this might be your case too
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sidrat
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PostSubject: Re: CARC oil leak   Wed Oct 18, 2017 7:48 am

Looks like you have reverted to chain drive Razz
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voulga77
Don Abbondio
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PostSubject: Re: CARC oil leak   Fri Oct 20, 2017 1:53 am

Well, actually I am into the concerned frames (not sure about the part number) but it's been 10 years since the recall. I am pretty sure the dealer won't give a shit...

How can I be sure is the bearing? Is there a way to find out?
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Pete Roper
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PostSubject: Re: CARC oil leak   Fri Oct 20, 2017 2:18 am

Looking at the pics I'm suspicious of the front seal and pinion nut but it's virtually impossible to be sure.

You're going to have to take it apart for a confirmation diagnosis.

As a first check get a small screwdriver and see if you can turn the peg nut visible down the throat of the pinion seal holder in relation to the actual pinion shaft.

Pete
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voulga77
Don Abbondio
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PostSubject: Re: CARC oil leak   Fri Oct 20, 2017 2:30 am

Hi Pete,
the peg nut turns together with the pinion shaft.
The "throat" is actually pretty clean, no traces of leak in there.


What do you think, should I give it a try with the dealer about the recall thing?
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Pete Roper
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PostSubject: Re: CARC oil leak   Fri Oct 20, 2017 2:55 am

Well, it's the original crappy 17 ball bearing but it hasn't broken up its cage which means you won't see the brinneling of the races until you cut them apart probably. There is also the age factor. As a very early one it's well beyond the ten year timeframe that Guzzi consider reasonable for a recall fix, (And I have to say the logic is hard to fault. It would be like offering warranty on a 1970's Tonti!).

At the end of the day replacing the bearing isn't difficult. The bearing isn't cheap, (I can dig up the number easily enough, make sure it's a good one from Timken or SKF or whoever not one from a country where people use pigs as currency!) and the seal is best replaced by the BMW equivalent as it's cheaper.

Also whoever put the last seal in drove it in too deep. The outer face of the seal should be flush with the casing it pushes in to. It should NOT be pushed in until it uses the outer race of the bearing as a register and that looks like what has been done the last time it was replaced.

Pete
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voulga77
Don Abbondio
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PostSubject: Re: CARC oil leak   Fri Oct 20, 2017 3:10 am

Thank Pete, got the point.

Should I replace any other bearings and seals inside the carc?
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Pete Roper
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PostSubject: Re: CARC oil leak   Fri Oct 20, 2017 4:10 am

Nope, probably not. You don't have to remove the front seal holder and disturb that seal to do the big bearing. I think I did a CARC strip for bearing replacement photoessay in the tech bit. Steve copied it from elsewhere I believe.

Pete
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voulga77
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PostSubject: Re: CARC oil leak   Mon Nov 06, 2017 10:50 pm

CARC stripped, main bearing and oil seal changed.
A lot easier job than I thought! Thanks to Pete's guide everything went smoothly.
Now, fingers crossed!
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