water/oil pump - BMW Luxury Touring Community
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post #1 of 3 Old Aug 1st, 2012, 10:41 am Thread Starter
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Join Date: Aug 2002
Location: Loxahatchee, Fl, USA
Posts: 986
Question water/oil pump

Hey All;

Anyone replaced the water/oil pump?
Anything I should watch for?


45 years riding and still more places to see.
2002 K1200LT
2016 R1200RT
IBA # 41935
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post #2 of 3 Old Aug 1st, 2012, 12:04 pm
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Location: Hazel Green, AL, USA
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Re: water/oil pump

I have pulled one off a dead engine (no intention of putting it back on). Pretty straight forward. You will dump a little water and oil when you pull it off even if you have drained the cooling system. No gasket (make your own with sealant) and an o-ring for the water port.

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

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

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post #3 of 3 Old Aug 1st, 2012, 5:03 pm
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Location: Railton, Tasmania, Australia
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Re: water/oil pump

I have rebuilt a pump (new seals on water and oil sides) on my K100, you need to be very careful to get the joint betewwn the oil pump and engine block front face "perfect". The reason is that this joint is under full system oil pressure and it will leak if not made correctly. BMW specify a ThreeBond sealant, I think it was grade 1207, you may need to check that. Basically you need to use a sealant that has high shear strength in order to effectively seal. Do not attempt to use a silicone sealant, it will leak and severe frustration will quickly follow. I used Loctite 515 Master Gasket and Loctite Primer T (spray application). Thoroughly clean the faces without scratching anything, then prime using the primer T. Do not touch the surcaces after this step as contamination will affect the cure. Apply the 515 master gasket and spread using a paddle pop stick or similar, do not use your finger (contamination). Bolt up and wait 12 hours before filling with oil and starting the engine. The wait time is important, sorry, but that's how it is. Ask me how I know,..... I had 3 attempts on the K100 before the joint was successful. Hope this helps.

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1988 K100RT (the pack horse)
2005 K1200LTE Light yellow metallic
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