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Old 09-28-2009, 11:15 AM
cn90 cn90 is offline
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Location: Omaha NE
Join Date: Mar 2006
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Mein Auto: 1998 528i 5-sp 140K+
Originally Posted by jimcash from bimmerboard

- About those expansion rivets. It is easy to push the small centre pin through the rivet and then the outer part easily lifts out and and can be reused. The only "trick" is to find the centre pins after you remove the liner - they should be sitting along the inside of the fender.
But yes - not a bad idea to have some spares just in case.

- There is another source of leaking that only occurs when you fill the reservoir to the top of the fill tube. On the top left of the reservoir tank there is a breather valve. It allows air to escape when filing and also allows air back in as the fluid is used. There is a tiny float inside it that closed to prevent fluid escaping when you fully fill the tank.
If you get some fluid on the floor just after filling the tank then this is probably the source of the leak - the float is not sealing. Best to replace that breather float unit....

I am quoting Jim Cash's reply from bimmerboard as above.

1. Yes, the Expanding Rivets can be re-used, just gently tap the center inward and it will fall down. Just retrieve them when the plastic liner is lifted up.

2. The "Breather Valve" sits on TOP of the Reservoir, if this "Breather Valve" fails, you basically have 2 options:
a. Replace "Breather Valve".

b. Or if you are too busy and have no time to replace the Breather Valve, then LEARN a new habit and do not pour Windshield Washer Fluid above the Blue Arrow and you should be fine. From the Engine Compartment, this is down the filler neck where it is just about to enter the Engine Bay:

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Last edited by cn90; 10-04-2009 at 07:40 PM.
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