How Do I Move Washer Reservoir to Access Aux Water Pump?
 

Need to replace aux water pump on 1991 300D....can see it sitting beneath washer reservoir. While I don't know that I need to remove entirely the washer reservoir, I at least need to move it out of the way.

Can someone walk me through the steps? I imagine it's pretty basic, but I thought I'd check with those who've done it before. Looked for it in the FSM, but couldn't find it.

Thank you.

you unplug the power to the pumps, or just pop the pumps out of the reservoir, then just lift it up.
if you have heated lines in the lid, you need to move them out of the way first.

Remove two top hoses on the reservoir, disconnect or pop out the pumps at the base of the reservoir and the reservoir will slide straight up. Remember that it's probably been sitting there for 18 years. Give it a nice firm pull.

Do I need to clamp the top two hoses, the ones that feed coolant through the reservoir? Or will I just need to concern myself with clamping the hoses to the AWP?

Don't own any clamps...will get some today.

Just the 2 hoses to the AWP. If you unplug the power to the windshield washer pump/s you will not lose anything If you just simply pop the pumps out all your going to lose is windshield water fluid through the hole/s that the pumps were in.

Thanks....that was easy enough.

That AWP is pretty tight down in there....debating whether to do it myself or have my indie do it. Can't imagine he'd charge me more than 1/2 hour.

You could do it yourself in 15 mins without the clamps. From the way it sounds you've already removed the reservoir. The AWP is righ there. You can disconnect the power and the hoses. Slide it out of the rubber, slide the new one in and reconnect everything.

So I don't need to clamp the coolant lines? In which case, what, just a little bit dribbles out and that's all?

So the rubber holder stays connected and intact?

You don't have to clamp the coolant lines, but you will have a little coolant loss if you don't. Don't disconnect them and take a coffee break. You can actually do one at a time. Depending on the conditions of you hoses(rubber is flexible) . Disconnect one at a time and attach to new one. Slide out the old one and slide the new one into the rubber holder. If you really don't have th confidence to do it, then let your indie do it.

I'll probably give it a shot....my main concern when I looked at it was how tight it was down there.

Replaced the pump on mine without removing the tank.

If you remove the tank, you'll probably spill more collant when removing the pump. Do it quickly and refill with a little coolant when done.

Or, flush the system with water and replace all coolant. It is supposed to be done every 2. years.

That's impressive...it's hard to imagine you would have room to maneuver your hands and deal the the hose connections with the tank in the way.

I suspect that he's describing the operation in a different model, where he didn't remove the expansion tank.

That makes sense....otherwise the guy's missed his calling as a neurosurgeon!

not to hijack, but is the process the same on 124's? just a firm tug upwards?

Yes. On your '87 you can simply lift the tank out of position and lay it to the side to access the pump, provided it is nearly empty.

If completely empty, I prefer to rotate and lift the pumps out of the reservoir over un-hooking the fluid lines.

Suspect what ever you want to :-)

I replaced the pump on my 1992 300 TD Turbo. The pump is under the washer fluid tank, on the left side of the engine. I had to renew it when I installed a webasto diesel heater.

It is a tight space, but with a small screw driver, it is no problem. One like THIS.

The pump it self is just pushed into a rubber housing.

Pictures from the webasto retrofit here : http://www.ascona.no/bil/tdt/webasto/

The pump is here : http://www.ascona.no/bil/tdt/webasto/41.jpg

That there's porn.

I've seen the Webasto OE installation in a few Euro-market cars (gas 126s usually), have always wanted to install one in a diesel 124. Can't justify it with a heated garage, but it's a cool option to leave the heat on when your car is parked outside the office.
My '72 VW Westfalia had the aux-heater on a timer, pretty handy (necessary really in that vehicle).

I have a timer, and I've also connected it to the alarm, so I can start it with the remote control :-)

The webasto DBW46 was the original choice in this cars, but I've put in a Webasto Thermo Top C. Had to do everything from scratch.

The difference in finding the car sitting outside the house with all windows full of ice, -or- finding it with 50C in the engine, 15C inside, and no ice on the windows can't be described :-)

When getting home from work in the evening, when all colleagues have their cold engines idling (poor engines) and scraping ice, while my biggest problem is I have to take the jacket of before I get into the car, all the effort monunting this thing was really worth it.


Sorry off topic ...

My sister lives in Bergen (SP?), tells me it's cold.

SR or SP is the letters used on the license plates in Bergen. Bergen is not cold, Bergen is just wet :-)