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Old 10-08-2012, 02:42 PM   #31
JimVonBaden
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Correct, not top left, top right side access to the vent tube.



Air cleaner, air box, same thing effectively.


bottom right.

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Old 10-08-2012, 07:12 PM   #32
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Didn't have a lot of time to mess with it today. But I did pull the plug out of the airbox and got a couple drops of oil. Unusual?
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Old 10-08-2012, 07:31 PM   #33
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Didn't have a lot of time to mess with it today. But I did pull the plug out of the airbox and got a couple drops of oil. Unusual?
Nope, a couple drops is normal.

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Old 10-09-2012, 01:53 PM   #34
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One other trick is to use electrical tape and tape the old one to the new one to help keep them lined up. Once it is going in, the tape will come off on its own.

Jim
Nice tip-. Thanks.
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Old 10-13-2012, 09:23 AM   #35
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Ok, I believe that PVC hose comes out of the crankcase just aboput the tele-lever pivot point? If so, I found it. The PVC hose was supple and still rubber-like. Not hard and cracking.

Took the seat off and nosed around a bit. Checked the air cleaner and found no traces of oil on it, but there is a thin film of oil underneath it on the bottom of the airbox. This leads me to believe that I am not fighting a worn-out engine. I kinda think that if it was compression getting past the rings that there would be oil all over the airbox. Correct?

I am seriously not wanting to start tearing into this thing to get the airbox off to check that PVC hose, so I am thinking that maybe I can rig up an adaptor to run about 15psi of compressed air into the oil filler hole to see if it holds pressure, or if it flows as it should.

How bad is that last idea? Will I screw something else up if I try this? And if it vents this pressure, what else do I need to check?
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Old 10-13-2012, 06:20 PM   #36
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Really?
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Old 10-13-2012, 06:38 PM   #37
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I wouldn't use 15psi. Better might be to blow gently into the breather hose from the airbox end. I'd do a leakdown test on the cylinders too.
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Old 10-13-2012, 06:48 PM   #38
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There is an article in the Hall of Wisdom.

The link to that article is here -> http://advwisdom.hogranch.com/Wisdom...eplacement.pdf

That article references this thread -> http://advwisdom.hogranch.com/Wisdom...eplacement.pdf

Hope that helps.
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Old 10-14-2012, 06:03 AM   #39
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I have got the replacement thing down pat.

I am trying to figure out why I have popped two oil sight glasses out in a matter of about 5 miles.
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Old 10-14-2012, 07:24 PM   #40
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I highly doubt you have excessive crankcase pressure. If you did you would have leaking seals all over the place. I suspect wither you have gotten a bad sight glass, or your sight glass hole is somehow out of spec.

What I would suggest is that you install a new one, drille some safety wire holes around it, and safety wire it in. This has been done successfully before.

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Old 10-14-2012, 07:48 PM   #41
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As in just strap it down so it doesn't blow out?
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Old 10-14-2012, 08:55 PM   #42
JimVonBaden
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As in just strap it down so it doesn't blow out?
Basically cross the glass with safety wire.

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Old 10-15-2012, 03:55 AM   #43
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Ok, that's what I thought you meant. Thanks.
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Old 10-15-2012, 09:23 AM   #44
def
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Is the BMW boxer oil site glass actually made of glass?

The clear window on mine appears to be plastic.
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Old 10-15-2012, 11:43 AM   #45
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My 2002 oil sight glass was plastic. The new one is glass.
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