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Needs Training Wheels
Needs Training Wheels

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 Post subject: Crank seal leak: DIY fix or shop?
PostPosted: Mon Aug 12, 2013 8:57 pm 
I have a leak on the right side of the engine, and it drips down the kickstand. I searched around and it seems like it is a fail crankcase seal that is causing the leak. I was wondering if you guys thought it was an easy DIY fix - considering I don't have all the necessary special tools such as the Universal Holder and Flywheel puller. Or should I just send it to the shop?

Is this an easy fix?


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One of Us
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 Post subject: Re: Crank seal leak: DIY fix or shop?
PostPosted: Tue Aug 13, 2013 9:34 am 
sometimes its easier and cheaper to replace the whole motor, and no special tools, how many miles on your motor

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2003 red ruckus-- bought in 03-gone
now have 2 mets- 2003 bought 2/14/13 478 miles & 2009 907 miles
build thread... viewtopic.php?f=92&t=64895


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Needs Training Wheels
Needs Training Wheels

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 Post subject: Re: Crank seal leak: DIY fix or shop?
PostPosted: Tue Aug 13, 2013 12:24 pm 
16,800km, which is about 10,000 miles.

I've actually considered a few options... either replace the engine (sounds daunting), send it to the shop (and pay $$), sell the Met or just top up the oil regularly.

So tempted to do the last one. It's just that I fear the seal degrade even more and leak at an alarming rate.


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Junior Mint
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 Post subject: Re: Crank seal leak: DIY fix or shop?
PostPosted: Wed Aug 14, 2013 5:05 am 
I picked up an engine for my Met recently since the old one was making a crazy sound (bent crank or bad bearing, parts alone to repair it myself came out to around $180+). New engine came from a 09 Ruckus with under 500 miles, $225 on eBay. You will easily be spending that at a shop, if not more. Of course, I lucked out and didn't get a bullshit motor someone was selling.

Total swap time was about three hours since I'm meticulous about things, and had to swap over a few items like the stator, flywheel, radiator, centerstand, and install a Ruckus swingarm. Swaps are cake, just remember where everything goes. Labels help if you're not familiar with the bike.

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Import Cycle Center
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Garage: '09 CBR600rr, '09 WRX, '09 Ruckus, '06 Metro, '06 85SX, '05 Legacy GT, '03 Warrior XV1700, '88 Subaru GL
Bikes of garage past: '95 GSX-R750, '81 XS400, Huffy 10-speed


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Rusty Trombonner
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 Post subject: Re: Crank seal leak: DIY fix or shop?
PostPosted: Wed Aug 14, 2013 9:59 pm 
swapping a low mileage engine is the best thing to do
but if you want to keep your old engine here is how to do it


that seal is on a plate
once you take off the radiator, flywheel (special tool needed around $20) and stator there are 4 bolts holding on the plate
take off the plate, and the seal is on that plate
so you can remove the seal super easily
when you order new seal, make sure to get the large o ring type seal for that plate
even though most likely you wont need that seal, if you do screw it up removing it you have a new one ready to go

ive removed that plate on a couple engines and reused the o ring with no problems





My friends bike is leaking in same place, oil drips out the fan area
first thing I thought was the crank seal
but its not that seal, or the large o ring seal or the plate
ive taken it apart like 4 times, even replaced the whole plate and seals from another engine
still drips oil
must be a crack in the engine I cant see

hard to trouble shoot because you can clean up everything but you cant start the bike with no stator or radiator on to look to see where the leak comes from
has to be fully assembled so its impossible to see the leak

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1981 C70
1979 CT90
1970 CT70
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Needs Training Wheels
Needs Training Wheels

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 Post subject: Re: Crank seal leak: DIY fix or shop?
PostPosted: Fri Aug 16, 2013 5:59 pm 
I don't particularly want to keep my old engine, but I have problems sourcing for a new one in Canada. That said... the thought that it might be something else other than the engine scares me.

Do you guys see a problem if I just topped up the oil frequently?


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Rusty Trombonner
Rusty Trombonner
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 Post subject: Re: Crank seal leak: DIY fix or shop?
PostPosted: Fri Aug 16, 2013 6:37 pm 
why not check first to see if its the seal
its super easy to replace, just alot of time to take off all the crap over it


you dont know anyone doing a gy6 swap
thats the way to get a stock engine, maybe post a WTB ad for where you live

_________________
2012 Kawasaki KLX 250S
2010 Zuma 125
2007 Met FOR SALE
2005 Ruckus sold
1981 C70
1979 CT90
1970 CT70
:chow: :LR:

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