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 2011 Swing Trans weeping

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Stainless601
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PostSubject: 2011 Swing Trans weeping   Sun 04 Dec 2016, 13:53

Hey all, I've been reading FAQ,s and little info on this item.
Bought this 2011 Swing with 6500 mi last April. It's my daily driver and I've got over 11k now. It's had this annoying oil seep onto the rear wheel and lower case. I replaces the rear tire and decided to find and fix the leak. Found the oil leak coming from the weep hole below the output shaft of the Trans.
Tried a short cut, used some "seal conditioner" to stop the leak, but that backfired! The inner and outer seals leaked badly! So now No choice, but to replace all seals. The red screw driver is to show the weep hole, I believe this hole is designed to allow an exit for oil seal failure that prevents oil from contaminating the rear brake system.
I found the variator faces have an unusual amount of wear?
Is this grooving typical? Will it limit the final drive speed?
What the heck, new belt and drive faces ordered along with seals.

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Cosmic_Jumper
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PostSubject: Re: 2011 Swing Trans weeping   Sun 04 Dec 2016, 16:03

Those grooves in the variator faces are definitely not normal. I'm not sure what would cause that problem on a scoot with so few miles as to not even reach the belt change interval.

Any chance the scoot was in a flood? Flood water & grit might explain that suspicious damage to the drive train. If that's any possibility I'd replace those final drive bearings and crankshaft seal as well.

Is that the screwdriver tip protruding into the bearing cavity in the second photo?

Tim
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Stainless601
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PostSubject: Re: 2011 Swing Trans weeping   Sun 04 Dec 2016, 16:13

Yes that's the head of the screw driver, showing the placement of the weep hole. No real evidence of water damage, or grit. I know many have posted 16,000mi, + belt change innervals so I really don't understand the grooves. They are mainly at the top and bottom of the belt travel. Also the bike tops out at 95mph, so I'm hoping for a little more with full belt travel.
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NWSSC
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PostSubject: Swing Trans weeping    Sun 04 Dec 2016, 19:00

Hello Stainless 601.First I have to give you credit for going that far into the final drive,most have not gone this deep. I believe the seal
that you are showing (page 11-3 of the service manual) in your picture is the culprit.
The weep hole prevents the build up of oil and causing more damage to the brake clutch shoes. Hope this is of help to you. Howard
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http://www.northwestsuburbanscooterclub.com/
NWSSC
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PostSubject: Swing Trans weeping   Sun 04 Dec 2016, 20:47

Just another thought as long as you have gone this far,be sure to lube the small needle bearing inside(I use wheel bearing grease) the
driven face (page 10-14). Howard
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http://www.northwestsuburbanscooterclub.com/
Cosmic_Jumper
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PostSubject: Re: 2011 Swing Trans weeping   Sun 04 Dec 2016, 21:34

Just curious, but did you remove the Clutch Bell (aka Clutch Outer)? If so, how?

Also, did you first notice the oil drip coming from the belt case or from the final drive shaft area? If from the belt case then, as Howard mentioned, the culprit would probably be the seal behind the Clutch Bell. But if a crankshaft seal leak that oil would be running down the inside of the belt case to exit at the hole at the belt case split immediately below the clutch assembly (aka Driven Pulley) --the same location where oil from a Clutch Bell seal leak would appear.

Please keep us informed. We have all benefitted from shared information.
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Stainless601
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PostSubject: Re: 2011 Swing Trans weeping   Sun 04 Dec 2016, 22:13

First noticed the leak onto the rear wheel. Cleaned everything and isolated it at the weep hole. Only after experimenting with an oil leak additive, the inner seal started leaking onto the clutch shoes. Then I resigned to disassemble the Trans to replace all seals.
Used a 3 jaw type external puller to remove the clutch drum.
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NWSSC
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PostSubject: Swing Trans weeping   Sun 04 Dec 2016, 23:13

I have been looking for this u tube video to send you. It is in Italian
but I think you will get the Gist of it. Howard




https://www.youtube.com/watch?v=0S176tZ41h8
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http://www.northwestsuburbanscooterclub.com/
Stainless601
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PostSubject: Re: 2011 Swing Trans weeping   Tue 06 Dec 2016, 19:00

Thanks for the link, I'm sure some info was lost due to foreign language. All in all very good demonstration of final drive tear down.
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Stainless601
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PostSubject: Re: 2011 Swing Trans weeping   Sat 17 Dec 2016, 13:02


Got the parts in, ordered online through Babbitts online parts. All OEM stuff. Completed the job and put 100+ miles on it going to work and back last week. NO Leaks!  Was pleasantly surprised that cruising speeds I have dropped 3-400 RPMs due to the new varriator clutch faces and belt. Hope that this continues.
Thought I'd show the "special tools" required to complete this job. The puller for the clutch drum is from Harbor Freight @ $20.00 and the others are made from scraps in the garage.
Glad to be back on the scoot, the weather is awesome this time of year here.
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Reg
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PostSubject: Re: 2011 Swing Trans weeping   Sat 17 Dec 2016, 14:57

Is the 4 1/2 to put the clutch drum back on?
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Stainless601
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PostSubject: Re: 2011 Swing Trans weeping   Sat 17 Dec 2016, 16:17

Yes, you can use most any pipe that's 1&1/2 inch inside diameter, I used PVC pipe but it was hard to hold while pressing with the washers and nut method. Id use metal pipe next time.
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Cosmic_Jumper
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PostSubject: Re: 2011 Swing Trans weeping   Sat 17 Dec 2016, 20:53

For future reference, what is the size of that puller (how long are the arms)? Do you have a HF item # for the puller?

I'm afraid that if you switch to 1.5" id metal pipe for that Clutch Bell installer that you'll really booger up the threads on the Clutch Bell. Maybe use a metal pipe with some kind of a PVC adapter at the end.

Tim
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Stainless601
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PostSubject: Re: 2011 Swing Trans weeping   Sun 18 Dec 2016, 08:58

Jumper, your probably right about about the threads course the plastic pipe fit very tight but those threads are for the factory puller. At $200.00 I'm sure to never use them. I'm fairly sure this is the item I purchased.
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Stainless601
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PostSubject: Re: 2011 Swing Trans weeping   Sun 18 Dec 2016, 09:02

Sorry that picture got too grainy to see the #. The item # is 69224 @ $ 17.99.
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