Play in the water pump pulley

[Mflara420]

As the title says I have play in the pulley and like a bearing out of grease kind of sound coming from the water pump pulley. Do I have to replace the water pump? Or can I just replace the pulley? Also I have a squeaking sound coming from one of the other pulleys, which one would it be?
Thanks

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[bawareca]

I'd replace the pump immediately.

[jfoj]

Originally Posted by Mflara420

As the title says I have play in the pulley and like a bearing out of grease kind of sound coming from the water pump pulley. Do I have to replace the water pump? Or can I just replace the pulley? Also I have a squeaking sound coming from one of the other pulleys, which one would it be?
Thanks

What engine are you talking about?

Assume a V8, if so, these pumps appear to last about 75k miles before the bearing seal starts to leak slightly into the bearing, then shortly there after the bearing starts getting very noisy.

I just had to replace the pump on my 2008 4.8l. Not a hard job, not an easy job. Pump is only like 5-6 bolts, but one bolt is behind the crank pulley and most people have to remove the lower crank pulley. I have smaller fingers/hands so I was able to do the job with removing the lower crank pulley, but I can get some pretty tight things done.

Also you might consider doing this proactively if you have a N62 V8 and have the water pump off the engine.

Bimmer Fix | Coolant Pipe Repair System

Hardest part of the coolant pipe was sanding down one area so the pipe would slip in the engine without much resistance.

I am glad I addressed this now, may not have ever had a problem, but this hopefully keeps me from having the coolant pipe leak in the future.

BTW, my pump started with a slight knock the day before I had to take a 2500 round trip. I took the trip and crossed my fingers. Pump got louder as the miles accumulated, however, I mad the 2500 mile trip before the pump failed totally. So I was able to change the pump before the seal or bearing fully failed.

[Mflara420]

Originally Posted by jfoj

What engine are you talking about?

Assume a V8, if so, these pumps appear to last about 75k miles before the bearing seal starts to leak slightly into the bearing, then shortly there after the bearing starts getting very noisy.

I just had to replace the pump on my 2008 4.8l. Not a hard job, not an easy job. Pump is only like 5-6 bolts, but one bolt is behind the crank pulley and most people have to remove the lower crank pulley. I have smaller fingers/hands so I was able to do the job with removing the lower crank pulley, but I can get some pretty tight things done.

Also you might consider doing this proactively if you have a N62 V8 and have the water pump off the engine.

Bimmer Fix | Coolant Pipe Repair System

Hardest part of the coolant pipe was sanding down one area so the pipe would slip in the engine without much resistance.

I am glad I addressed this now, may not have ever had a problem, but this hopefully keeps me from having the coolant pipe leak in the future.

BTW, my pump started with a slight knock the day before I had to take a 2500 round trip. I took the trip and crossed my fingers. Pump got louder as the miles accumulated, however, I mad the 2500 mile trip before the pump failed totally. So I was able to change the pump before the seal or bearing fully failed.

Thanks for all the info!

I totally forgot about doing the bimmer coolant transfer pipe fix. I planned on doing it next time the water pump bites the dust.

Indeed the lower bolt near the crank pulley is a pain to put back on, took me 2 hours to finally get in place!

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[gregg3gs]

shameless self promotion. use it as you like it:
http://www.xoutpost.com/bmw-sav-foru...-n62-4-8l.html