Primary Leak!

G

Gas Man

Cool isn't cheap
Calendar Participant
Superfly... that is crazy!!!!

Fiber... you're right. I use o-rings at work all the time and they are the only thing seperating me from 1000+ psi of "name your petro" Further, alot of the issues with sealing are related more with the o-ring material.
 
G

Gas Man

Cool isn't cheap
Calendar Participant
Checked my old one...

Its small... the actuall hole in the primary is very small... 1/8" maybe... but it DOES just thread into the inner primary from outside the primary
 
Cynbahd

Cynbahd

Member
Gas, I noticed that the button on the outside of the inner primary for my K9 is missing. Is there are part number for the vent plug?
 
Cynbahd

Cynbahd

Member
Primary Vent

Spoke with Dan at Big Dog here is the part number to replace the Primary vent 240-000122-00.
 
Claymation

Claymation

Member
Im was looking for this vent earlier on my 2005 BDM chopper.

The dime size above the adjuster looks to me to be an allen wrench fitting to the chamfered bolt? am i missing something

I have a major leak in the primary someplace, this weekend after riding hell i had oil up on the back fender, what a mess

picking up a used lift tonight, really tired of working on this bike on the ground

History was dealer had done a clutch 2 times on this side so im not sure what they had off. I ordered the o-ring seals



BBD that is the update to their dumb venting idea on the inspection cover.

The original idea was that the insp cover would be the vent. That there was no way the fluid would travel upwards thru the square void from the lower left corner, thru the sponge that was suppose to be there, to the channel above (mine is already sealed with silicone in pic below), across the top channel, and out of that cover area. WRONG! So they started to have techs seal that venting setup with silicone, sense you had the button on the backside of the inner primary. Then they went to the one piece large square gasket instead of this o-ring setup.



The vent like I said is on the backside of the inner primary between the motor and the tranny. Smaller than a dime and has a mesh center to it. You can see it on the inside in the pic below... at the top above the adjustor
 
stlmikie

stlmikie

I wish I had more money.
What pic below?


Claymation said:
Im was looking for this vent earlier on my 2005 BDM chopper.

The dime size above the adjuster looks to me to be an allen wrench fitting to the chamfered bolt? am i missing something

I have a major leak in the primary someplace, this weekend after riding hell i had oil up on the back fender, what a mess

picking up a used lift tonight, really tired of working on this bike on the ground

History was dealer had done a clutch 2 times on this side so im not sure what they had off. I ordered the o-ring seals



BBD that is the update to their dumb venting idea on the inspection cover.

The original idea was that the insp cover would be the vent. That there was no way the fluid would travel upwards thru the square void from the lower left corner, thru the sponge that was suppose to be there, to the channel above (mine is already sealed with silicone in pic below), across the top channel, and out of that cover area. WRONG! So they started to have techs seal that venting setup with silicone, sense you had the button on the backside of the inner primary. Then they went to the one piece large square gasket instead of this o-ring setup.



The vent like I said is on the backside of the inner primary between the motor and the tranny. Smaller than a dime and has a mesh center to it. You can see it on the inside in the pic below... at the top above the adjustor
Click to expand...
 
rocksrt

rocksrt

Member
DAMN Broke off that damn primary vent button

superfly said:
this little valve must really keep the fluid from coming out. Slowrower and I just finished up my clutch yesterday. I was putting the vent screen back on and while screwing it back in it broke off. I thought no biggie will get a new one and tap the old thread back out next week. Drove home and about half way home I was leaking primary fluid like a siv. Every traffic light I was leaving little puddles. Got it home put some paper down on floor and as it cooled it continued to leak out of the hole until my garage floor looks like a crime scene. How could that little vent make that much difference? i'm baffled
Click to expand...
DAMN, I just broke mine off. Was that little hole the cause of your leaking like a seal? Who has these? I have not got it tapped out yet, but I don't want it falling into the primary. :angry::angry::rant::bang:

I guess that is what I get for trying to get stuff too tight.

Any suggestions would be very appreciated.
 
J

Jorian_Jones

Member
slowrower said:
If you find yourself with a leaking primary cover first thing to check is the Primary Case Vent which is easy to get at with a 7/16" wrench (be carefull as some are nylon). A friend had a small leak in his primary and after installing a new clutch and cable I also removed the primary vent which was plugged solid .. I suspect this was causing the leak as pressure built up it had no where to go but out of the primary cover .. THIS CAN ALSO force oil into your starter. Be sure to check it!! The vent hole is tiny and it won't take much clutch material bonded to oil to block it! :cheers:
Click to expand...
How did you clean the primary vent? I see that from the front opening (in the picture showing the clutch chain tensionor its the black disk looking area) did you have to take off the entire unit and take the nut off from the back? I currently have a primary leak after working on my clutch as well. Trying to knock out all the ideas before I have to drain all the new fluid I just put in.
 
W

woodbutcher

Mr. Old Fart member #145
Staff member
WHOA!!!!! Now this is a gem from the past that contains knowledge from so many of the OG members. If I remember right, you have, or are picking up an '04,, of which I have no experience. But if it is a newer version with the DSSC, it is located just over the top shoulder in the middle of the inner cover. It is hex head with very few threads. Be careful when replacing it so you don't crossthread it after washing it with brake cleaner.
 
J

Jorian_Jones

Member
woodbutcher said:
WHOA!!!!! Now this is a gem from the past that contains knowledge from so many of the OG members. If I remember right, you have, or are picking up an '04,, of which I have no experience. But if it is a newer version with the DSSC, it is located just over the top shoulder in the middle of the inner cover. It is hex head with very few threads. Be careful when replacing it so you don't crossthread it after washing it with brake cleaner.
Click to expand...
Found it thank you!!
 
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