07 fxstc primary oil leak

garyp · May 8th, 2009, 02:25 AM

Hi, anyone had experience of what appears to be oil leaking off the drain plug on the primary. I have recently changed the oil and replaced the o ring on the plug. Tranny oil level is ok with no visible leaks as is engine oil. The oil seems a bit misty up the inner primary. I have no oil on belt or trans pulley.Any help appreciated.

glider · May 8th, 2009, 06:43 AM

If the "O" ring is OK, I would clean the inner primary area thoroughly and run the engine. Some times the leak is elsewhere but the plug being the lowest point on the primary will show as a leak when it is actually coming from somewhere else and running down.

rancid · May 8th, 2009, 07:50 AM

Quote:

Originally Posted by glider

If the "O" ring is OK, I would clean the inner primary area thoroughly and run the engine. Some times the leak is elsewhere but the plug being the lowest point on the primary will show as a leak when it is actually coming from somewhere else and running down.

too right, inner primary seal will just run down on to drain plug. take a good look up on the inside of the primary housing to make sure its not the seal above, or a starter o ring. main shaft seal will get all over the trans case and pully. but if the o ring gets caught up when installing the drain plug it will tear it out.

TQuentin1 · May 8th, 2009, 09:17 AM

Gary,

Check this too:

Primary Oil Leak - Harley Davidson Community

TQ

garyp · May 10th, 2009, 12:45 PM

Thanks for the previous info. Unfortunately after a good cleaning and replacing the primary o ring it seems that I have oil leaking from an inner oil seal. I ran the bike up for 100 miles or so and have clean oil running from the primary side of the pulley. Any info on a seal replacement- is it fairly straight forward? I have removed the wheel and belt cover and oil is no further up than the pulley. Thanks.

adanuloff · Sep 9th, 2009, 09:39 PM

I have a 2007 FXSTC with the same issue. I can't really see where the leak is comming from but it's on the inside potion of the inner primary cover. Kinda right in front of the final drive pulley on the trans. There seems to be a plug of sorts there that is seems to be seeping oil. My bike only leaks when moving. It wont leak if it sits for a couple of days. has anyone figured this out yet? Thanks.

2000classic · Sep 14th, 2009, 10:43 AM

Had the same issue on my 2000 Ultra. Drops of oil at the primary drain plug. Was actually coming from the seal on the back side of the inner primary. New seal, bearing, and inner race installed. Leak is gone.

adanuloff · Sep 16th, 2009, 10:47 AM

That seems to be the issue Thanks.

A bit early for seals to start leaking isn't it?

May 8th, 2009, 02:25 AM	#1
garyp Start The Engine Ride: 2007 softail custom Join Date: Jun 3rd, 2008 Posts: 22 My Mood:	07 fxstc primary oil leak Hi, anyone had experience of what appears to be oil leaking off the drain plug on the primary. I have recently changed the oil and replaced the o ring on the plug. Tranny oil level is ok with no visible leaks as is engine oil. The oil seems a bit misty up the inner primary. I have no oil on belt or trans pulley.Any help appreciated.

May 8th, 2009, 06:43 AM	#2
glider Community Liaison Ride: 07 Road King Classic Join Date: Jun 21st, 2007 Posts: 21,063 My Mood:	Re: 07 fxstc primary oil leak If the "O" ring is OK, I would clean the inner primary area thoroughly and run the engine. Some times the leak is elsewhere but the plug being the lowest point on the primary will show as a leak when it is actually coming from somewhere else and running down. __________________ Psssst! Please stop by the "self help section" for maintenance tips, diagnostic codes and much more. click me!>>Self Help Information and Tips<< click me!

May 8th, 2009, 09:17 AM	#4
TQuentin1 Moderators Ride: '03 FLHTCUI (Ultra Classic) Join Date: Apr 4th, 2008 Location: Sugar Land, TX Posts: 2,332	Re: 07 fxstc primary oil leak Gary, Check this too: Primary Oil Leak - Harley Davidson Community TQ __________________ Please stop by the "self help section" for maintenance tips, diagnostic codes and much more. >>Self Help Information and Tips<< click me!

May 10th, 2009, 12:45 PM	#5
garyp Start The Engine Ride: 2007 softail custom Join Date: Jun 3rd, 2008 Posts: 22 My Mood:	07 fxstc inner primary oil leak Thanks for the previous info. Unfortunately after a good cleaning and replacing the primary o ring it seems that I have oil leaking from an inner oil seal. I ran the bike up for 100 miles or so and have clean oil running from the primary side of the pulley. Any info on a seal replacement- is it fairly straight forward? I have removed the wheel and belt cover and oil is no further up than the pulley. Thanks.

Sep 9th, 2009, 09:39 PM	#6
adanuloff New Family Ride: 07 FXSTC Join Date: Jul 28th, 2009 Posts: 2	Re: 07 fxstc inner primary oil leak I have a 2007 FXSTC with the same issue. I can't really see where the leak is comming from but it's on the inside potion of the inner primary cover. Kinda right in front of the final drive pulley on the trans. There seems to be a plug of sorts there that is seems to be seeping oil. My bike only leaks when moving. It wont leak if it sits for a couple of days. has anyone figured this out yet? Thanks.

Sep 14th, 2009, 10:43 AM	#7
2000classic Contributor$ Ride: 2000 Ultra Join Date: Nov 23rd, 2008 Location: Watertown, WI. Posts: 190 My Mood:	Re: 07 fxstc primary oil leak Had the same issue on my 2000 Ultra. Drops of oil at the primary drain plug. Was actually coming from the seal on the back side of the inner primary. New seal, bearing, and inner race installed. Leak is gone.

Sep 16th, 2009, 10:47 AM	#8
adanuloff New Family Ride: 07 FXSTC Join Date: Jul 28th, 2009 Posts: 2	Re: 07 fxstc primary oil leak That seems to be the issue Thanks. A bit early for seals to start leaking isn't it?

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07 fxstc primary oil leak

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