Could you please specify what engine you have? There are 5 different engines installed in E70 (in the US) with at least 4 different type of water pumps and you say water pump is a common failure :dunno:

:iagree:

:stickpoke

:nanana:

I'd also make sure you check valve clearance: I do it on my Ducati every 7K miles. But I guess that depends because in my generators is rarely needed.

I was also reading over on a Chevy board that people check the points when they do the water pump and the timing belt. I'd add that to the list to tell you SA.

3.0si N52N

That's an electric pump......this thread is specifically about mechanical pumps....those that are belt driven.

How many folks have replaced their 35D mech water pump? I'm at 85k miles on my 2011 35D and about to change out the thermostat when it shows up in a week or so.

Looking to see if there were anymore thoughts on this

I'd replace it just because you'll already be there draining coolant and all that, and the pump itself isn't that expensive. And you'll be good for another 5 years at least.

I'm thinking mine has failed now. I have 83,000 miles on the diesel and I've been noticing a persistent wet spot under the car for a couple of weeks now, and yesterday I received the low coolant warning.

I replaced my thermostat around 60k miles, as soon as I bought the car (which also resulted in needing to buy a new EGR cooler) and that's been fine, but no more. I haven't been able to actually get in there to look yet, but now I'm debating whether I want to deal with this project again or just bring it to the shop.

Does anyone have directions on taking the water pump belt off for the 35D?

I read threads not specific to the 35D on removing the alt belt using the tensioner to reduce pressure on belt - same process?

https://dl.dropboxusercontent.com/u/...Alternator.PNG

Just to add a data point to this thread.

I replaced the original water pump on my xdrive35d at 121k miles. The water pump was not leaking, but the bearing was starting to develop a small amount of play.

I was replacing the thermostat due to need, and replaced the water pump for peace of mind. I'm glad I did.

I know that the water pump was original to the car because the gasket was still attached to the other gaskets on the front of the block. And I confirmed through the service history that no part of the cooling system had ever been touched on this vehicle.

Yes. They are the same belt. I used a 19mm spanner on the hex on the end of the idler. Rotate CCW and slip the belt off the tensioner pulley.