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Mercedes Windshield Nozzle Install


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All parts used in these pictorials are available at the diesel parts for sale page

Safety and security tips:

Please remember to recycle all your used fluids at an appropriate recycling center.  Be mindful to not spill or splash fluids on yourself, others or the ground.  Also as a safety tip please remember anytime you are working on, around or under your car, to wear safety glasses and secure the car with wheel stops and approved jack stands! 



Mercedes Windshield Nozzle Install

If your windshield washer nozzles are not spraying anymore, broken, leaking, or not there anymore, then this pictorial is for you.  This is one of those items that you don't think about until they don't work.  I had a 1979 300d as the mule for this pictorial that needed new nozzles.  They were not spraying due to clogging and being 30 years old.   So follow along as I show you how to get them fixed fast.

This is the heart of the system the windshield fluid tank.


AT the bottom of the tank is the electric motor.  I have never had one of these go out.  I am sure they do but they are VERY reliable.  Attention General Motors take note.....


I used the brand new windshield nozzles from dieselgiant.com along with a few other plastic pieces I managed to break along the way.


Removing the tee from the old nozzle it broke.  This is on the backside of the hood.


Old broken non-functioning nozzle compared to the new nozzle.


Here is the hole in the hood after the nozzle is removed.  Its in a star shape and will correspond to the tabs on the nozzle.


Broken original tee and the nice pliable tee.


I install the new tee where the broken one was.  Honestly the more I touched they system the more plastic that broke.  Remember this system is subjected to the under hood heat and plastic yellows and gets brittle after 30 years.  No problem all the parts are available.


I obtained some of the factory braided washer hose to tie into the tee.  Put the hose on the new nozzle first.


Then I installed the nozzle from the outside of the hood making sure the holes are facing the windshield and not the front of the car.  Don't ask me how I know this.:)  Then I connected the braided hose to the new tee.


I did the same thing on the passenger side.  Keep in mind the passenger and drivers side nozzles are the same, but the system ends on the passenger side so no tee is necessary.


If all is well and you were careful you will have no leaks and the nozzles should like this.  Now test the system by operating it and verify everything works without leaking.

Now that was not hard was it?