| Author |
Message |
    
Buellistic
| | Posted on Wednesday, August 01, 2007 - 10:40 pm: | 
|
Spiderman:
You are 100% correct on that ...
Mechanic's can and have done it, "BUT" HARLEY-DAVIDSON technicians should never try this !!!
In BUELLing
LaFayette |
Spiderman
| | Posted on Thursday, August 02, 2007 - 12:17 am: |
|
No one should try it!
For some one who thinks a tight primary chain causes oil pump drive gear failure and that taking off a cam cover while the rockers are on is OK worries me... |
Djkaplan
| | Posted on Thursday, August 02, 2007 - 09:14 am: |
|
I'm not getting why a tight primary chain cocks the pinion shaft forward.
"You should know a slight miss match will cause a failure."
That's good stuff to know... but what causes the mis-match? |
Buellistic
| | Posted on Thursday, August 02, 2007 - 09:59 am: |
|
Spiderman:
"i" concur 100% !!!
In BUELLing
LaFayette
(Message edited by buellistic on August 02, 2007) |
Natexlh1000
| | Posted on Thursday, August 02, 2007 - 10:06 am: |
|
Tight primary is related to the pinion failures?
Is that REALLY what caused all of those pinion failures??
Has anyone from the factory ever actually came out and said what was the main cause of the failures? |
Buellistic
| | Posted on Thursday, August 02, 2007 - 10:13 am: |
|
Djkaplan:
The gears being pulled away from each other in referance to primary chain !!!
Visulize this: Looking down from the top of the engine ... In your mind, pulling the engine sprocket and clutch basket sprocket together ... Would you not think that the crankshaft pinion shaft will move towards the front of the motor and the mainshaft sprocket side of the transmission mainshaft moves towards the rear wheel ???
In BUELLing
LaFayette |
Spiderman
| | Posted on Thursday, August 02, 2007 - 10:15 am: |
|
If a tight primary chain was enough to mis-allign the crank enough to cause a oil pump drive gear or pinion gear failure you have a lot more to worry about my friend.
If your crank is out of line you are going to have some kind of crank failure way before you have to worry about the cam side.
(Message edited by spiderman on August 02, 2007) |
Djkaplan
| | Posted on Thursday, August 02, 2007 - 10:26 am: |
|
This hasn't been a problem with XB's has it?
I'm wondering if the front shock mount could be distorting the cases enough to mis-align the gears. The load path seems like it passes right through where the oil pump mounts.
The one thing that's really different between a tuber and an XB is a tuber uses the engine as a stressed member. An XB engine essentially hangs there, where a tuber engine has to carry loads introduced by the front shock mount. I've seen one case where the front shock mount ripped itself from the engine, breaking the front of the crankcase - the loading must be pretty significant in this area (this stress also makes it to the front engine mount, btw... hmmm). |
Nevrenuf
| | Posted on Thursday, August 02, 2007 - 11:42 am: |
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torque, i'll send you the whole list of parts that was in the bike when i got it. |
Natexlh1000
| | Posted on Thursday, August 02, 2007 - 12:48 pm: |
|
If the cases were being mashed to that extent,
I would think that other stuff would be failing in addition like the cam bearings. |
Buellistic
| | Posted on Thursday, August 02, 2007 - 03:14 pm: |
|
Djkaplan:
The XB's pior to 2006 did !!!
From 2006 on they have the much harder DRIVE GEAR PN 26391-06 and it can take a slight missalignment better ...
What distorts the cases is heat and it expands from front to rear which affects the primary chain adjustment which becomes a problem when the primary chain is adjusted too tight ...
As long as the ISOLATORS are in good shape on either model there is no problem although the XB rear shock is a better design placement ...
There are two problems that occurs with the engine as a STRESSED FRAME member:
1) Motor mounts not being installed correctly ...
2) The rider if very agressive can rip apart anything they ride ...
The SHOCK under the engine was a production run from 1984 to 2002(18 years) ...
There is a better SHOCK placement, BUT the enginers have not found it yet ???
In BUELLing
LaFayette |
Djkaplan
| | Posted on Thursday, August 02, 2007 - 04:31 pm: |
|
"The XB's pior to 2006 did !!!"
Interesting points, Buellistic.
I like throwing stuff around like this. |
Natexlh1000
| | Posted on Thursday, August 02, 2007 - 05:59 pm: |
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I had no idea that XB engines did that.
Did sportster engines do it too? |
Buellistic
| | Posted on Thursday, August 02, 2007 - 09:04 pm: |
|
Natexlh1000:
There did not seem to be a problem with the Sportster street engines unless they were PERFORMANCE ENHANSED and race engines ...
Earley on you could get a OIL PUMP DRIVE GEAR same as the -06 H-D one from ZIPPERS PERFORMANCE ...
"SO" if you have a Pre 2006 XB(even a BLAST)and are a bit agressive, "IMHO" you should install the -06 GEAR ...
Have one for my BLAST, but have not put it in yet ... Checked my 97S3T at 60K in 1999 and it looked like new, BUT the DRIVE GEAR was not available(any way "i" could not find one) so back together it went ...
When it gets to the 100K mark the gear will be looked at again and replaced due to the mileage ...
In BUELLing
LaFayette |
