Rubber plug in swingarm

XRAnimal

New Member
Joined
Nov 25, 2011
Messages
56
Location
Perry County, PA, USA
What's the purpose of the rubber plug in the swing arm? Mine is a loose one.

By the way, I love this bike. 1,000+ miles in 3 weeks without going anywhere, just riding...
 

Combo

DSN
Founding Member
2011 Site Supporter
2012 Site Supporter
2013 Site Supporter
2014 Site Supporter
Joined
Oct 18, 2010
Messages
1,541
Location
Santa Fe, Texas
XRAnimal said:
What's the purpose of the rubber plug in the swing arm? Mine is a loose one.

By the way, I love this bike. 1,000+ miles in 3 weeks without going anywhere, just riding...
I am not sure what it is for but I am sure someone on this forum knows. I checked mine after seeing your post and mine is also loose. I plan on cleaning it up and using some liquid rubber to re fit. I don't think I want dirt and water going in that location.

This bike does many things very well. I love it too. I can see me keeping this bike for a very long time. ::008::
 

stevepsd

New Member
Founding Member
2011 Site Supporter
2012 Site Supporter
Joined
Oct 3, 2010
Messages
1,500
Location
Idaho & OR
The swingarm is a hollow cast unit and the hole is left over from the casting process.The plug is there to prevent water from getting into the there.

My KTM has the same thing...but the plugs have a tendancy to leak, so we pull them out and put a bit of RTV sealant around them to stop them from leaking. I should do this on the St just for good measure. I have not checked to see if there is a drain hole on each arm of the swingarm (the KTM does not) nor would I put one in.
 

YamaPA

New Member
Joined
Sep 16, 2011
Messages
154
Location
Macungie, PA
stevepsd said:
My KTM has the same thing...but the plugs have a tendancy to leak, so we pull them out and put a bit of RTV sealant around them to stop them from leaking. I should do this on the St just for good measure. I have not checked to see if there is a drain hole on each arm of the swingarm (the KTM does not) nor would I put one in.

Lots of people drill small holes in their KTM 950/990 swingarms to relieve water which collects.....mine included. When I drilled my first hole (keep you mind on motorcycles people), about 3 ounces came out on one side...the other, about 2 drops.
 

stevepsd

New Member
Founding Member
2011 Site Supporter
2012 Site Supporter
Joined
Oct 3, 2010
Messages
1,500
Location
Idaho & OR
YamaPA said:
Lots of people drill small holes in their KTM 950/990 swingarms to relieve water which collects.....mine included. When I drilled my first hole (keep you mind on motorcycles people), about 3 ounces came out on one side...the other, about 2 drops.
Had you sealed the plugs beforehand? On my 530EXC the plugs were clear plastic and not very supple so they did not seal very well. Did you install a removable plug or anything in the drain hole to prevent water intrusion thru the drain hole?
 

roy

Member
Founding Member
Joined
Oct 19, 2010
Messages
751
Location
Mississippi
Where is this plug located? I don't see one. My swingarm does have what looks like drain holes on the bottom at rear of each side.
 

YamaPA

New Member
Joined
Sep 16, 2011
Messages
154
Location
Macungie, PA
stevepsd said:
Had you sealed the plugs beforehand? On my 530EXC the plugs were clear plastic and not very supple so they did not seal very well. Did you install a removable plug or anything in the drain hole to prevent water intrusion thru the drain hole?
This is getting off topic as it now relates to KTMs. But to answer your question...the 950s have decently supple black rubber plugs on either side of the swingarm. And no, I did not install any other plugs...if water comes in, it drains right out. No need to complicate things.
 

roy

Member
Founding Member
Joined
Oct 19, 2010
Messages
751
Location
Mississippi
XRAnimal said:
This is a Tenere forum, right ::024:: kidding ;D

The plug is on the inside of the swing arm, in line with the leading edge of the rear tire.
Hahaha, I touched mine and it fell off. Good to know now it's barely held in place.
 

RMac

Member
Founding Member
Joined
Nov 24, 2010
Messages
392
Location
Phoenix AZ area
I was washing my bike on a warm day in the summer and I pressed that swingarm rubber pluggy cause it felt loose. The little sucker shot into my swingarm and I couldn't get it out ???

So, now I have a new one with old one floating around in the swing arm ::007::
 

spasm

New Member
2012 Site Supporter
Joined
Aug 18, 2011
Messages
801
Location
uk, poole, dorset
wow i cant believe this thread, i found this rubber plug on the floor after washing my bike weeks ago, i thought it was off someones car because i couldnt think or see where it might have come from on the bike.
luckily i kept it, brilliant thanks guys, im off to the garage to refit it with some silicon sealant ::008:: ::008::
 

Scottie Boy

Master Home Brewer
Joined
Aug 3, 2011
Messages
61
Location
Acworth, GA
I barely touched mine and it fell out in my hand. As luck would have it, I had a tube of black RTV handy. I cleaned everything up and re-installed with a bead of sealant on the plug. Thanks to the OP for the heads up.
 

limey

Well-Known Member
Founding Member
2011 Site Supporter
2012 Site Supporter
2013 Site Supporter
2014 Site Supporter
Joined
Dec 13, 2010
Messages
1,913
Location
Bowmanville Canada
I just took a look and the plug is missing and the swing arm is full of road grime. Thanks for the heads up guys.
 

XRAnimal

New Member
Joined
Nov 25, 2011
Messages
56
Location
Perry County, PA, USA
Glad my question raised some awareness ::008::

You all should keep an eye open for loose rubber parts... Me being a quality manager, I'm seeing a trend :mad: I've washed my ST twice (hose, no power washer) and each time there was a mystery rubber part on the ground when I was done. One is clearly a grommet, the other a press-in spacer or small dampener.

Yamaha has a little ways to go to match the Honda quality I'm accustom to. For now I'll ::021::
 

EricV

Riding, farkling, riding...
2011 Site Supporter
2012 Site Supporter
2013 Site Supporter
2014 Site Supporter
Joined
May 22, 2011
Messages
8,365
Location
Tupelo, MS
Thanks for the heads up. Mine was there still after 9500 mi, but typically loose. Pulled it, cleaned it up, did a little alcohol wipe at the mating edges and gave it some RTV love. It won't fall out now and I can still remove it if there is some reason to. ::003::
 

pqsqac

Bike Name: Blue Spirit
Founding Member
2011 Site Supporter
2012 Site Supporter
2013 Site Supporter
Joined
Jan 19, 2011
Messages
893
Location
Midlothian, VA
I'm guessing there is only one plug since the left side is the shaft drive?
 

colorider

Moderator
Global Moderator
Founding Member
2011 Site Supporter
2012 Site Supporter
2013 Site Supporter
Joined
Sep 25, 2010
Messages
5,442
Location
Sidney, NE
WOW!!!!! Scared me. Time to go check that silly plug and seal that puppy!!!
 
Top