Oil leaking from sump front weep hole. - BMW Luxury Touring Community
 
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post #1 of 12 Old Sep 7th, 2013, 12:53 pm Thread Starter
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Oil leaking from sump front weep hole.

I notice oil on the garage floor under my 2000 K1200LT (54000 miles) this morning after returning from a 50 mile round trip last night.
I'm not sure what the weep hole is for as the Clymer manual shows the water/oil pump seal weep hole on the left side of the pump so is it the the front crank seal. I don't want to pull the wrong things apart. Thanks for any suggestions.

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post #2 of 12 Old Sep 7th, 2013, 3:02 pm
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Re: Oil leaking from sump front weep hole.

That is actually the vent for the oil pump seal. The oil/water pump assembly has the oil pump in the rear and that is a vent for it. It vents the "no mans" land between the oil side and the water side of the pump assy. If oil is coming out the oil side has failed. If water is coming out the water side has failed. I would just get a used combo from e-bay.

John
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Last edited by jzeiler; Sep 7th, 2013 at 3:11 pm.
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post #3 of 12 Old Sep 7th, 2013, 3:09 pm Thread Starter
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Re: Oil leaking from sump front weep hole.

Thank you John.

So if its the vent does that mean that the oil seal needs replacing and if that's the case should I do anything else while I'm in there?
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post #4 of 12 Old Sep 7th, 2013, 3:13 pm
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Re: Oil leaking from sump front weep hole.

I recommend a used unit as it takes special tools to take it apart and you have to remove the water side seal to fix it.
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John
2009 K1300GT Red Rocket
2009 R1200GS (Gone)
2005 K1200LT Ocean Blue Blue Wizard 110 K and counting...
2006 Bushtec Turbo+2 Spell
2004 330 Ci Convertable
K4AN

Have ridden a Motorcycle in all 48
But lack DE, MA, RI and CT with the 2005 LT

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post #5 of 12 Old Sep 7th, 2013, 3:30 pm Thread Starter
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Re: Oil leaking from sump front weep hole.

Thanks again John.

I have found one from a 2006 LT with 7000 miles on it for 99 GB pounds, are they all the same or have they changed over the years?
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post #6 of 12 Old Sep 7th, 2013, 3:44 pm
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Re: Oil leaking from sump front weep hole.

All the same.

John
2009 K1300GT Red Rocket
2009 R1200GS (Gone)
2005 K1200LT Ocean Blue Blue Wizard 110 K and counting...
2006 Bushtec Turbo+2 Spell
2004 330 Ci Convertable
K4AN

Have ridden a Motorcycle in all 48
But lack DE, MA, RI and CT with the 2005 LT

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post #7 of 12 Old Sep 7th, 2013, 5:11 pm
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Re: Oil leaking from sump front weep hole.

John,
Just curious but is this meaning the oil pump has failed or something else? A few weeks back I too had just a few drops after an oil change, cleaned the area around the front sump cover bolt (and tightened it) and haven't had more since. But this thread has me curious.
Chris

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post #8 of 12 Old Sep 7th, 2013, 5:14 pm Thread Starter
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Re: Oil leaking from sump front weep hole.

I have just bought this , hope it will sort the problem. Looks like I will also need an O ring and some sealant to seal it to the crankcase and a full oil and coolant drain plus refill and filter.
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post #9 of 12 Old Sep 7th, 2013, 9:02 pm
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Re: Oil leaking from sump front weep hole.

Quote:
Originally Posted by blueknightga6
John,
Just curious but is this meaning the oil pump has failed or something else? A few weeks back I too had just a few drops after an oil change, cleaned the area around the front sump cover bolt (and tightened it) and haven't had more since. But this thread has me curious.
Chris
There are two seals on the shaft. One seals oil from the oil pump and the other seals water from the water pump. There is a small dead area between the two. It just means one of the seals is leaking, not necessarily a failed pump. Only needs attention if the drip is constant.

John
2009 K1300GT Red Rocket
2009 R1200GS (Gone)
2005 K1200LT Ocean Blue Blue Wizard 110 K and counting...
2006 Bushtec Turbo+2 Spell
2004 330 Ci Convertable
K4AN

Have ridden a Motorcycle in all 48
But lack DE, MA, RI and CT with the 2005 LT

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post #10 of 12 Old Sep 7th, 2013, 9:08 pm
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Re: Oil leaking from sump front weep hole.

Quote:
Originally Posted by gdb32
I have just bought this , hope it will sort the problem. Looks like I will also need an O ring and some sealant to seal it to the crankcase and a full oil and coolant drain plus refill and filter.
Engage the gear in the output shaft (top oil pump gear) and install the bolts loosely, rotate the crank (engine in 5th and bump the rear wheel) to center the gears as you tighten the housing bolts. Use a sealant on the surfaces and the o-ring on the water passage. Bolts are 10 Nm.

John
2009 K1300GT Red Rocket
2009 R1200GS (Gone)
2005 K1200LT Ocean Blue Blue Wizard 110 K and counting...
2006 Bushtec Turbo+2 Spell
2004 330 Ci Convertable
K4AN

Have ridden a Motorcycle in all 48
But lack DE, MA, RI and CT with the 2005 LT

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post #11 of 12 Old Sep 8th, 2013, 4:27 am
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Re: Oil leaking from sump front weep hole.

Just a little info on installing and getting an oil-tight seal between the oil pump housing and engine case (front face) - this is a metal to metal joint which is under full oil pump pressure, unlike most other joints on the engine, which are sealing at atmospheric pressure only. That said, BMW used to specify a 3Bond product for this joint, I think it was 3Bond 1209 or some such. I used Loctite 515 Master Gasket and primed the surfaces with Loctite Primer T. You must not scratch the aluminium surfaces and be scrupulously clean, otherwise you may be repeating the exercise. HTH

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post #12 of 12 Old Sep 8th, 2013, 7:48 am Thread Starter
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Re: Oil leaking from sump front weep hole.

Quote:
Originally Posted by K100Dennis
Just a little info on installing and getting an oil-tight seal between the oil pump housing and engine case (front face) - this is a metal to metal joint which is under full oil pump pressure, unlike most other joints on the engine, which are sealing at atmospheric pressure only. That said, BMW used to specify a 3Bond product for this joint, I think it was 3Bond 1209 or some such. I used Loctite 515 Master Gasket and primed the surfaces with Loctite Primer T. You must not scratch the aluminium surfaces and be scrupulously clean, otherwise you may be repeating the exercise. HTH
Thanks Dennis, that's all useful info. Clymer calls the sealant ThreeBond 1207B, its on my shopping list, but its good to know there is something else I could use it I can't find a supplier.
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