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There are PDFs of 406 manuals floating around on the internet. I found that they are overly concise and quite generic, definitely an 180 degree approach to the "print it by the pound" SEE manuals. Send me a PM and I can send you a PDF unless you want a hardcopy. Update - The file is huge for...

Who knows what or how my rig was used previously. The linkages have always moved since I got it but there was an intervening owner and I hit my linkage with lithium early on. If you look at the design of the shaft and the attached bellcrank, Mercedes is asking a lot of a cheap nylon bushing that...

After my hand hand throttle issue I had this weekend I got under the SEE to take a look. The bell crank that is attached to the accelerator pedal from the hand throttle (#23 on the parts drawing 0040 00-2, P/N 406 300 09 04) is bent. What should be a flat plate perpendicular to the shaft...

Just in case you haven't checked the obvious, swap the leads on the fans at the electrical terminal block at the base of the fan and see if the opposite fan runs. That rules out that you have bad fan (which is very common).

I had a fairly major project planned for the last couple of weeks to put a drainage ditch in on a logging road on my wood lot. The entire lot has quite steep slopes and at one point a main haul road was put in. It is quite steep. The original builder had dug a ditch through a part of the slope...

On my 1300L his recommendation is GL4 75W90. With respect to olive oil I expect the additive I use to increase the lubricity in my diesel is mostly biodiesel most likely made out of used cooking oil. It has no petroleum odor to it and looks like cooking oil. Unfortunately I have been told that...

The resident Unimog expert in NH (and possibly the east coast ) is George Bull at the Unimog Center http://www.unimogcenter.com/ . He recommends and uses Redline GL-4 only for similar vintage gearboxes based on his research. His experience is predominately with the older 406 series and the...

Sorry I am a bit late to thread. Its a bit of a rabbit hole on the transmission fluid question. The military used GL-5 to standardize on lubricants as the portals and diffs should have GL5. Thus if you follow the military's lead you would use the same fluid in all three. On the other hand...

Thanks for the warning. I expect you may be onto something as it shouldn't have required the adjustment.

As part of my long ago electrical diagnosis I had to tear apart the multifunction gauge. I lucked out an all my bulbs were good but they are an oddball. I would bet its a ultimately a Bosch or VDO part number as they build most of the European gauges. I would suggest Scott at EI for a start. I...

Thanks for the upload. That student manual is the jackpot for sure. First partial documentation on the STE ICE system plus the air and brake system schematics are priceless if someone is doing diagnosis.

The handouts from the New Equipment Training Branch may be the best jackpot, Mercedes usually does color schematics of various vehicle systems that are quite helpful in understanding how they work and for diagnosis. The manuals are sadly short on "big picture" drawings. I have heard of but not...

Stainless is a PITA to work with. Its great for chemical corrosion in industrial plants but overkill for vehicles. Bending stainless on the fly is difficult, and look at it wrong and it might crimp. Copper nickel doesn't work harden like copper, its easy to bend by hand and hard to accidentally...

I try to use copper nickel when I can, I did my cross body air line with it (instead of stainless). This website if worth taking a look at for supplies and tooling. Be aware their flaring tool is pro grade and priced as such. http://fedhillusa.com/ The owner of Bel-Metric is a unimog owner...

This definitely doesn't justify buying a spare SEE or a HMMH to lift the spare tire into place ;).

I swapped out one of my tires for a much better spare. Getting the spare off was fairly easy as I had already greased up the holding screw previously (FYI unless you have greased it, its most likely rusted in place from years of sitting and a PITA to unscrew). Getting the tire back was more of a...

Well I got my RPM back which was the purpose of the adjustment. Previously I was limited to 2000 RPM. It now revs just shy of 2400 which I believe is the stock max RPM. I realize that the engine is capable of much higher RPM by adjusting the injection pump but realistically stock RPM is fine...

Darn you are tempting fate ;). As we both have learned the hard way, there is no substitute or quick fix with the fuel systems (same with the air system). Either do it once start to finish with the right parts or have intermittent half fixes work for a bit and then fail when you really need it.

Do yourself a favor and start a job ticket at Expedition Imports and ask if they have the specific parts you need for the diff locks. In many cases Mercedes made running changes so even the parts manual may be out of date. Scott deals with a lot of 419 parts many which are not listed on his...

FYI. My 1300L chassis "designed from scratch" for the German military in the eighties (20 years after the SEE chassis fuel system was designed) which initially had a similar OM352 engine, gravity fuel system and produced during the same era doesn't have the strainer (unless I haven't found it...