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Old Mar 22, 2020 | 11:16 AM
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Default What is it?

On the driver’s side behind the fender at the back, there is a tank that has a “sending unit?” And another unit plunged into it. There is a “filler?” tube coming up by the brake master cylinder from this tank. My filler tube was broken off in a wreck. Can someone tell me what this large tank is.
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Walt




Last edited by wallysolvette; Mar 22, 2020 at 02:37 PM.
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Old Mar 22, 2020 | 11:35 AM
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Kinda hard to tell without a pic. In my M7 i have the brake fluid and clutch fluid fillers around there.
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Old Mar 22, 2020 | 12:16 PM
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Originally Posted by wallysolvette
On the driver’s side behind the fender at the back, there is a tank that has a “sending unit?” And another unit plunged into it. There is a “filler?” tube coming up by the brake master cylinder from this tank. My filler tube was broken off in a wreck. Can someone tell me what this large tank is.
Thanks
Walt
The windshield washer fluid reservoir??
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Old Mar 22, 2020 | 12:24 PM
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Are you talking about the "shiny tank thing" in front of the brake reservoir? It is an auxiliary vacuum pump that will run if there is not enough manifold vacuum to operate the power brakes or HVAC controls.

Ron
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Old Mar 22, 2020 | 02:28 PM
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I think the guy that said wiper fluid reservoir was s correct. Traced the tube from the windshield washers back and it goes to the tank.
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