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  #1  
Old 01-17-2015, 10:25 PM
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Leaking washer reservoir replaced pump

Just got done with this job on the e70 and (after I exhausted all other options!!) I found the below useful instruction on a UK site. This job is not too bad but I was really missing an instruction with a clear picture of the fender bottom and the running board. I went the wrong way at first and dismantled a lot more than necessary. :-( It took me about 8 hours whereas with right instructions (and parts on hand) it can be done in an about an hour.....two at most.

Mine has OE running boards and I would add to the instruction below that I needed to first remove the RB to get to the bottom screws in the fender. The running board is held in place by a half dozen clips in the bottom and by a set of really tight clips in the door sill. Most of the clips in the bottom were missing and I broke the remaining three as well as four of the door sill clips, so get some spares before you start. It also has two tabs that are held in slots in the bottom of the fender.

I only cleared the front of the RB but it would probably be easier to release the back as well by taking 2 or 3 rivets out of the rear arch. Once the RB is free from the bottom of the fender it is time to release the torx bolts in the door hinge area. Once the RB is clear and the bottom of the fender can be moved away from the car you have space to get to the pumps. I took out a whole bunch more stuff but it is not necessary if you only need to exchange the pump. Mine had clear traces of washer fluid coming from the weep holes of the main pump. Also, no need to remove the front fender liner is you are not removing the reservoir, however then it is harder to see where the leak is.....

Here is the text from the UK site:
My 09 started leaking washer fluid little pools under the washer reservoir area on the Tarmac, also had a weak windscreen washer jet others were fine. What you need to do is replace the front and/or rear windscreen pumps, there is a mechanical seal which separates the pump from the electrics of the motor, when the seal goes fluid leaks out of a little tell tale, I thought it might just be the rubber filter grommets leaking, but the amount of chew to get to the job it's easier to replace it all while your in there. The reservoir and pumps are behind the drivers side (RH) front wing which needs partially removing to gain access to the pumps whilst leaving the reservoir in place. Get the drivers wheel off, remove 5 of the plastic rivets holding the wheel arch trim on these will need replacing with new, remove the inner wheel arch mudguard enough to see the washer reservoir and tie it forward. Use a torx bit to remove the screws securing the wing. There are 4 in the door hinge area, the others are on the bonnet shut, there is one Phillips screw under the windscreen trim where the windscreen meets the top of the wing. There are two 8mm screws securing the wing to the body from underneath down near the running board, the running board just pops off with a good heave with a long screw driver, again just pop it off enough to get access, then you can get at these 8mm screws. With those loose there will be just enough clearance to get your hand in to remove the pumps without fully removing the wing.

Below are a few pics. I had the reservoir more or less out because I wasn't sure what was leaking. The middle pump was the culprit. In the pic with the fender you can see where the 2 screws in bottom are and the tags on the RB that snap in to the bottom of the fender.

Next is the thermostat. It is on order and I am sure it will be just as much "fun" as this job.....
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2003 4.4i black ext./black int./black headliner
2006 4.8iS Le Mans blue/cream int./black headliner, SOLD sadly...
2009 E70 35d, black ext./black int./black headliner (shipped to Europe)

Hmmmm, love those black headliners!

Other hardware:
2005 Tundra crew cab, son's DD and weekend hauler
2015 Cayenne S (wife's new DD and definitely wroooommmmm)
2016 Tundra 1794 edition crew cab, luxo hauler

Last edited by TriX5; 01-18-2015 at 11:23 AM.
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Old 01-18-2015, 11:26 AM
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updated with pictures

A few pics of the carnage under the fender :-) But finally put it back together and cleaned the wheels. Now it just has to be washed completely but the water on the driveway was beginning to freeze and today it is raining. I guess that would be caused by having washed the e53.... ;-)
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2003 4.4i black ext./black int./black headliner
2006 4.8iS Le Mans blue/cream int./black headliner, SOLD sadly...
2009 E70 35d, black ext./black int./black headliner (shipped to Europe)

Hmmmm, love those black headliners!

Other hardware:
2005 Tundra crew cab, son's DD and weekend hauler
2015 Cayenne S (wife's new DD and definitely wroooommmmm)
2016 Tundra 1794 edition crew cab, luxo hauler
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  #3  
Old 01-19-2015, 11:10 PM
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I had to replace mine too. Only one was leaking (I think it was the middle one as well), but I actually ended up replacing both since like you probably noticed get there is a royal pain in the ass...

Just like you, in a futile attempt to figure out if I could fix it, I ended up releasing the bolts holding the fender. With small enough hands you can actually unplug the pumps without... But maybe I'm just saying that since I've done it already.

Just in case, and for future reference, Harbor Freight has a rivet gun that works for with the plastic rivets holding the fender trim piece: Hand Riveter with 40 Industrial Strength Poly Rivets
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Old 01-20-2015, 08:02 PM
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Since I released the top of the fender (there is a screw under the windscreen trim) I had plenty of space moving the fender away. I got the rivet tool of ebay long ago when I swapped the arches.

ZT
I am not sure if the T-stat will be a worse effort or easier than this? I think you tackled both?
__________________
2003 4.4i black ext./black int./black headliner
2006 4.8iS Le Mans blue/cream int./black headliner, SOLD sadly...
2009 E70 35d, black ext./black int./black headliner (shipped to Europe)

Hmmmm, love those black headliners!

Other hardware:
2005 Tundra crew cab, son's DD and weekend hauler
2015 Cayenne S (wife's new DD and definitely wroooommmmm)
2016 Tundra 1794 edition crew cab, luxo hauler
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  #5  
Old 01-20-2015, 08:35 PM
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Quote:
Originally Posted by TriX5 View Post
Since I released the top of the fender (there is a screw under the windscreen trim) I had plenty of space moving the fender away. I got the rivet tool of ebay long ago when I swapped the arches.

ZT
I am not sure if the T-stat will be a worse effort or easier than this? I think you tackled both?
I did. I was more frustrated with the washer pump just because it was such a silly thing.

The T-stat is fairly straightforward, and another user documented it well here: http://www.xoutpost.com/bmw-sav-foru...-diy-pics.html

Other than the couple of suggestions I made there I don't have much to add...
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Old 01-21-2015, 09:16 PM
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Thanks, I saw that thread and it will be my guide. The T-stat arrived at Tischer, just have to find time.
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2003 4.4i black ext./black int./black headliner
2006 4.8iS Le Mans blue/cream int./black headliner, SOLD sadly...
2009 E70 35d, black ext./black int./black headliner (shipped to Europe)

Hmmmm, love those black headliners!

Other hardware:
2005 Tundra crew cab, son's DD and weekend hauler
2015 Cayenne S (wife's new DD and definitely wroooommmmm)
2016 Tundra 1794 edition crew cab, luxo hauler
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Old 03-03-2015, 03:59 PM
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What's the likely hood of both front n rear window pumps failing? Both of mine went out at the same exact time...checked the fuses n took off my fender liner yesterday to gain minimal access but enough for my small ass hands to check the connections n get a good visual etc. Just pissed b/c I riveted my arch back on with new rivets...Oh well.

I don't have any leaks, mine has been filled to the brim for two months. Also, do the grommets/strainer prevent the fluid from leaking out when a pump is pulled? Just wondering since I don't want a waterfall of fluid draining out when I try to replace them otherwise I'm going to siphon out what I can. Going to order some new pumps today hopefully.

Last edited by MAK3N3; 03-03-2015 at 04:41 PM.
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