Windscreen washer problem

camelotr · 10-03-2016, 08:14 AM

Hello,

I am done again.

The car came in boxes to the workshop, and I just cant figure out how the windscreen washer system was.

I have these:

I simply dont understand why I have 2 pumps in one system

...

Please somebody explain it to me...

JK930 · JK930's Garage

2 PUMPS:

1 MOUNTS NEAR BATTERY FOR WINDSHIELD WASHER
1 ON TANK FOR HEADLIGHT WASHER

HERE IS A DIAGRAM FOR THE WINDSHIELD WASHER SYSTEM

JK930 · JK930's Garage

HERE IS A HEADLIGHT WASHER DIAGRAM

camelotr · 10-03-2016, 10:40 AM

Thanks!

It is not clear where the intensive tank goes in the trunk. Can You tell me that?

JK930 · JK930's Garage

on my '81 930 my tank resembles the one in the diagram.

the pump for the headlight washer system is mounted on the plastic tank.

the pump for the windshield is mounted by 3 rubber tabs in the front trunk

Rubber Plug
Part #: 914-628-741-00-M100

next to the battery on the "wall" where the trunk latch is.

JK930 · JK930's Garage

i see your mounting tabs are actually still on your pump.

i would suggest you test both pumps before you start your project

camelotr · 10-03-2016, 11:13 PM

Thanks. I have found the location of the tank. I only need to find its connector now

dap930 · dap930's Garage

If your windshield washer pump won't run, you can take the pump apart and clean it. Usually the idler gear gets stuck on its shaft due to some corrosion.

Alan L · Alan L's Garage

Quote:

Originally Posted by dap930

If your windshield washer pump won't run, you can take the pump apart and clean it. Usually the idler gear gets stuck on its shaft due to some corrosion.

And the short cut is to hook 12V on to it (should be marked +/-) and give it a bit of a whack. Sometimes frees them. But if they sit for months they often stick.
If it doesn't fire up straight away after whacking it, disconnect power. It will overheat trying to go. You don't need any water supply to try the pump. It is just a gear pump and the gears get stuck - as noted earlier. Luckily they made them so you can pull apart. Something I haven't tried is squirting some WD40 type oil down one of the ports and see if that frees things. You will want to flush it out before installing - smeary windscreen otherwise.
Alan