Question about Harley Davidson XL Sportster 883 Motorcycles

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The breather bolts on my 2002 sporty won't come off ,dont want to snao them any suggestions?

The bolts are hollow

Posted by Anonymous on

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  • Harley Davidson Master
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Hi Anonymous, try hitting the head of the bolts a couple of times with a hammer, then just give the wrench a good smack with the hammer if it breaks the bolt you gave it your best shot. I have never broken one and i have run across some tuffy's in my past. Good luck

Posted on May 21, 2015

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Posted on Jan 02, 2017

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SOURCE: Oil on breather tubes.

Not sure how many miles you have but oil on breather tubes (depending on how much) is normal the problem is when you have excessive blowby and high oil consumption. When was the top end done last... If never, it's due....

Posted on Sep 08, 2009

Testimonial: "Thank you for the help. It was a 883 with a 1200 conversion 2 years ago. I had just gotten the bike a few weeks ago has not used any oil yet. "

wd4ity
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SOURCE: 73 sporty won't shift

The old Ironhead Sportster were notorious for breaking the shifter shaft. It's got a ball on the end of a lever like piece and it's bad about breaking. But, there are other things that could be wrong. You could have a broken shifter pawl spring as well. In this case, it usually shifts all the way one way then won't go the other way. You'll just have to pull the transmission out to find out for sure. To get the transmission out, you must take the engine sprocket, primary chain, and clutch assembly off. Then remove the front final drive chain sprocket. Take the four bolts out of the transmission "trapdoor" and pry it off. The transmission comes out with the door. This a not a real difficult job but I would suggest the purchase of a service manual for the bike. There is a lot of information that you'll need, much too much for me to type in here. Also, the old saying "A picture is worth a thousand words" applies in this case.

Good Luck
Steve

Posted on Aug 10, 2011

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1 Answer

I have 1998 fatboy leaking oil out of air breather i have replaced breather valve umbrella valves drilled out the holes on top but still leaking


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Do you possibly have worn out compression rings???

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Dec 28, 2011 | 2002 Hyundai Santa Fe

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My 1994 FLSTC keeps blowing out the front top rocker arm box seal every few thousand miles. Mechanic said it is due to poor design that year on how seal sits? Any suggestions?


Go tell your mechanic that he doesn't know what he's talking about. I own a 1994 FXDWG and the only thing it does is seep a bit of oil on the rear cylinder base gasket. Your '94 model Evo engine is what we call a "head breather" in that the crankcase pressure is vented into the air filter through hollow "union bolts" that go into each head. If you or someone else has changed these bolts to eliminate the "breathing" effect, crankcase pressure can build in the engine causing it to blow the gaskets. Another thing that could be wrong is that your breather gear in the crankcase may have a broken tooth on it. This is the rotating "valve" that allows your crankcase to evacuate the oil into the cam chest so that the oil pump can pump it back to the oil tank. The gear is made of plastic and the teeth on the gear will break off. When this happens, the "valve" will either stop turning or become out of time with the crankshaft causing excessive pressure in the engine. Also, when installing the new seals, the middle and upper rocker box covers must be aligned properly to ensure the seal is not squeezed out or pinched.

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Sep 05, 2011 | Harley Davidson FLSTC Heritage Softail...

1 Answer

73 sporty won't shift


The old Ironhead Sportster were notorious for breaking the shifter shaft. It's got a ball on the end of a lever like piece and it's bad about breaking. But, there are other things that could be wrong. You could have a broken shifter pawl spring as well. In this case, it usually shifts all the way one way then won't go the other way. You'll just have to pull the transmission out to find out for sure. To get the transmission out, you must take the engine sprocket, primary chain, and clutch assembly off. Then remove the front final drive chain sprocket. Take the four bolts out of the transmission "trapdoor" and pry it off. The transmission comes out with the door. This a not a real difficult job but I would suggest the purchase of a service manual for the bike. There is a lot of information that you'll need, much too much for me to type in here. Also, the old saying "A picture is worth a thousand words" applies in this case.

Good Luck
Steve

Aug 09, 2011 | Harley Davidson XLS 1000 Motorcycles

1 Answer

1989 harley davidson heritage softtail carborator shooting oil


Shooting oil? Your engine is what we refer to as a "head breather". This is because the crankcase pressure is vented into the carburetor, by EPA requirements, through the two large hollow bolts on either side of the breather backing plate. They may be covered by rubber plugs but you can see them when you take the air filter off. Oil accumulation is normal but "shooting" is not. This would indicate a excessive buildup of oil in the rocker boxes and failure of the "umbrella valves" in the center section of the rocker box covers. I'd take the air filter cover off and clean it out thoroughly and see if it still did it. If so, you've got a problem with the crankcase venting system on the engine. Since I'm not that familiar with the Twin Cam engine, I'm reluctant to guess exactly what the problem is. In the older Evolution engines that I'm familiar with, I'd suspect the "breather gear" in the cam chest but I'm not sure the TC-88B engine uses this system. Sorry I can't be more specific.

good luck
Steve

Jul 24, 2011 | 2000 Harley Davidson FLSTC Heritage...

1 Answer

I have a 2008 fat bob, i put a screaming eagle air cleaner cone style on it last summer. ive noiced that i have oil coming from around one of the caps beside the intake. let me know if this is a commmon...


Your engine's crankcase vents through a hollow bolt that screws into each head and vents the crankcase pressure into the air breather. This is a requirement of the EPA that the crankcase vent air be routed through the engine via the air filter. A little oil around it is common.

good Luck
Steve

Jun 12, 2011 | 2011 Harley Davidson FXDF Fat Bob

1 Answer

On my way home my bike strated leaking oil for the air cleaner. Wha en I took off the air cleaner it had oil in it but I don't see where it is coming from. What could be the cause of this ?


Since 1994, Harley engines have been called "head breathers". This means that the crankcase overpressure is vented through the head where in years past, it was vent out of the crankcase down lower on the engine. The EPA made Harley change the crankcase ventilation system so that any overpressure was rerouted through the engine via the carburetor instead of simply being blown out on the ground.

If you'll look behing your breather, you'll two large bolts that screw in the heads, one into each head. These bolts are hollow and the crankcase pressure is relieved through these bolts directly into the breather.

If you're getting some oil in the air filter, this is normal. But, if you're a LOT of oil in the breather, you have either overfilled the oil tank or the "umbrella valves" in the center rocker box section may be bad. Since these "umbrella valves" are made of a rubber type substance, heat and age make them become hard and brittle. When this happens, they don't function as they should.

They're not difficult to replace. Simply take the tanks off your bike and take the six screws out of the rocker box cover. Lift the top and center section off. You'll see the umbrella valve at the inner right corner of the center section. Pull the old one out and pull the new in just like the old one was in there. Put the rocker box cover back on and do the rear one. Put the tanks back on the bike. No problem.

Good Luck
steve

Aug 11, 2010 | 2002 Harley Davidson FXD Dyna Super Glide

1 Answer

Oil on breather tubes.


Not sure how many miles you have but oil on breather tubes (depending on how much) is normal the problem is when you have excessive blowby and high oil consumption. When was the top end done last... If never, it's due....

Sep 08, 2009 | 2008 Harley Davidson FLHX Street Glide

1 Answer

Tension pulley


It's a normal bolt, righty tighty lefty loosey. Try some DB Blaster and let it soak. Another thick is to tap the head of the bolt from side to side so as to loosen the rust. Good luck.

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