Two new toys unimog 404

joeblack5

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State College PA
Hi Guy, Hope you are having a good time with some beer.

Getting back on the temperature gauge..

I was a little frustrated that the Unimog does not use a thermo well. That is if you take the temp sensor out then coolant comes out as well.. One argument could be that the sensor responds faster and is a little more accurate because it is in direct contact with the coolant..
For me it is frustrating because without the sensor I cannot refill the coolant and if I plug it then I have to partially drain when I want to put the temp sensor back in..

So decided to modify the adapter plug and make a thermo well out of it.. I had a capped end of the right size stainless tubing.

From there my laziness got the best of me. The original sensor is positioned in a recess in the head. My "solution" had a larger diameter blob on the end and so it did not fit as deep in the head..
As a result I have to make the sensor 1/4 shorter. Not a problem for me but now it is not interchangeable with potential other ...new..unimog sensors.

I can always cut the stub back of... Or cut it of and start again.
here is a pic of my toils.IMG_20200530_211122_276.jpg
 
Last edited:

Fla Mog

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Location
Fort Myers/Florida
View attachment 796235So I was in need of a truck that can get me thru some swampy area. Found one but the PO had two for sale . so well... Two it was.
They came from California and sat in the desert for 15+years.
Sofar I have removed the sparkplugs and dumped a couple of teaspoons mystery marvel oil in each cylinder.. Then I put them in 6 gear and raised one rear wheel. With a crowbar they both came loose.
Got some batteries and tried the starter with plugs out . On starter the oil pressure gets up to 2-1/2.. The closed cab fire trucks ignition wires are sparking. Did a compression test on both and all 6 show compression although all over the place.

So now I am starting on the fuel system and I find that the fire truck has an in tank electric fuel pump.. I have a factory manual but there is no mention of this pump.
Found some posts about this pump but no details.. Does anybody has a fuel diagram with a factory electric fuel pump?

Thank you.
JohanView attachment 796235
I know a guy in Calf. That has a 404 fire truck that the caught fire, everything behind the cab is in great condition
 

joeblack5

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Location
State College PA
Today was a busy day removing a dana 60 front axle from my e350 4x4 ambulance before the rest go to the scrapyard..
In that process I removed the doghouse from the e350 (7.3 idi diesel) and reused the heat / noise insulation for the doghouse covers in the 404. Curious if it makes an appreciable difference.IMG_20200531_200642_490.jpgIMG_20200531_200642_490.jpg
IMG_20200531_204753_709.jpgIMG_20200531_204753_709.jpg
This stuff is two layers fiber and aluminum foil. I was able to cut and fold. Replaced the screws for the handle with lo get ones and used washers and but on the inside. Need to do some fitting and then finish the edges with aluminum tape.

TBC
Johan
 

Guyfang

Well-known member
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Burgkunstadt, Germany
Johan,
Go to the German Ebay. Type Betriebsanleitung Unimog-S in the search block. Look at the whole page. There are more then a few documents for your truck. If you find one you want, tell me. I can buy. That part I can not get cheaper. BUT,I can send it to you for lots less then the shipping cost, in ebay.
 

joeblack5

Active member
177
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Location
State College PA
Johan,
Go to the German Ebay. Type Betriebsanleitung Unimog-S in the search block. Look at the whole page. There are more then a few documents for your truck. If you find one you want, tell me. I can buy. That part I can not get cheaper. BUT,I can send it to you for lots less then the shipping cost, in ebay.
Guy, Thank you for your help, i will study a little more about the differences with the ones i have.
 

Ferretboy

Active member
Steel Soldiers Supporter
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Location
Ripley,ohio
When i got my unimog it had a speedometer...a fuel gauge..a temp gauge..an oil pes. gauge..and an hour ometer that was not wired to anything....i guess the last owner just used it to fill the hole in the dash. Very cool you can work on restoring gauges...almost like being a watch maker i guess....
 

joeblack5

Active member
177
96
28
Location
State College PA
Today no serious work on the mogs..designed a stand to support the loader of the flu419..
Ordered diethyl ether to refill the temp gauge.
Jacked up the front tires to see which one has a flat spot. Could not find it.
My old for parts mb240d had a nice Mercedes emblem on the steering wheel and this mog had lost its ability to honk.

Just needed another tinker project so scrambled up some old stuff and see if fits together.IMG_20200601_204814_102.jpg
The left bung of a 55 gallon drum showed promise.
So on the lathe.. The inner diameter of the steering wheel us 55 MM. This bung was 53 inside so pretty skinny wall left over.
IMG_20200601_211731_994.jpg

Then I needed a new switch.. Oh my... When still in the Netherlands I dated a girl who was an electronic engineer at a medical hospital. She supplied all their junk for me to study.. And so a couple of these switches stayed with me ...even to here in the USA ...30 years later.. Even made in Germany.
IMG_20200602_202310_033.jpg
A complete switch for reference in the top left... The modified one in parts next to the emblem..

Need to make one more plate to fit it all together. Then it should look like this.
Probably add a relay to separate the high current of the horn from the signal switch..no worry I have spares.. Haha.
IMG_20200602_191157_479.jpg
 

Ferretboy

Active member
Steel Soldiers Supporter
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Location
Ripley,ohio
Hello Guyfang...johan and others....great info and motivation to go out to the garage and work....im pushing 60...and feel it!!!! Its getting hard to keep up with you young guys!!!! Keep up the hobby....great work all of you do.
 
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