Clean are restore windshield washer bottle tank - Mercedes-Benz Forum
 
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post #1 of 5 (permalink) Old 05-13-2019, 08:18 AM Thread Starter
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Clean and restore windshield washer bottle tank

I was looking for one for a while, my old heating element was leaking inside the washer tank, the heating element itself is no longer available from MB, i found one on ebay so i decided to give it a shot, i decided to share my pictures with you if you want to clean and restore and get rid of that green junk calcium inside the tank and the heating element. If you are married don't do it on the sink like i did , almost wife kick me outside the house . All you need is white vinegar, water, a container, tooth brush for cleaning, sand paper (400 and 2000 grid) to sand the scratches on the tank and powder citric acid from you local grocery store. i know some will say you are in Texas you don't that heating element, my answer is: my OCD will not allow me to see something unplugged or not working in my car . below are some pictures in case you want to clean yours.

Parts needed:

1- If your Rubber Grommet is worn out where the heating element is attached to the Washer Reservoir Cap. this part for you
Manufacturer Part Number: 010-997-13-81, MBZ part #: Mercedes Benz A 1249975081

2- If your washer pump seals grommet are leaking, this part for you
Manufacturer Part Number: 123 997 36 81

3- If your valve is stuck, not working, leaking from the seals where the coil is attached to the valve, buy new valve that comes with washer from Parts.com for $15.60 and for $14 from the dealership.
Part number:1268300784

Cleaning:
1- Mix like 4-5 cups of hot water, 1 cup white vinegar and 2 table spoons of powder citric acid.
2- Soak it for a couple of hours or more (it depends on how bad and dirty is your tank)
3- brush it with soapy water and sand the scratches or heavy spots with 400 grid sand paper followed by 2000 to make it smooth again.

Note: there might be another way, but this is my way.
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AxelWulff, mramay and Chicky like this.
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post #2 of 5 (permalink) Old 05-13-2019, 12:22 PM
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Wow great write up !! Never seen someone restore these
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post #3 of 5 (permalink) Old 05-13-2019, 12:28 PM
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... no wonder your wife was "mad" at you... using the pyrex glass serving dish

Seriously, OCD's unite
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post #4 of 5 (permalink) Old 05-13-2019, 12:31 PM Thread Starter
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Quote:
Originally Posted by Chicky View Post
... no wonder your wife was "mad" at you... using the pyrex glass serving dish

Seriously, OCD's unite
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post #5 of 5 (permalink) Old 05-13-2019, 02:34 PM
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Hehe. My other half is completely used to parts in the house, by now.

I did my washer tanks with Milton sterilising fluid soaking and scrubbing.

No heater element in mine though.

I would say that doing as you have and then using water to flush out the washer lines before filling with fresh mix, does wonders for the pressure/volume of the spray.
Mixing additives over time previously can result in bad reaction between chemicals, resulting in blobby gooey fluid.

Anyway looks great well done.

'86 420SE
'90 420SEC


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