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As BelinNC said, that adjustment most likely is the cause of lack of clutch. Set the gap first (recalling 1/16" slack, piston to arm gap) using the bolts on the slave, then use the adjustable link between piston and arm to get proper pedal free-play of an inch or more. The gap is to insure...

It,s a Unimog! It just works. :-)

Maybe there is a filter on the fluid return as there is on a 406? A plugged filter can cause fluid to back up and at same time starve the pump.

A set of metric tubing nut wrenches is a good investment. An open end wrench (or worse, an adjustable wrench) will result in rounded tubing nuts. The 'cat's meow' is a set of tubing crow-foot wrenches. Use them for both easy access spots, or the numerous 'hard to reach' spots. The grommets...

Sounds like air ingress into the fuel supply. Sometimes you can spot a tiny bit of fuel that leaks out when the truck is off (no vacuum on the lines). Following the fuel supply path and loosening/tightening all fittings might find the problem. If no luck with that step, it's possible to drain...

The front and rear PTOs on the 406/416 run off the transmission. A PTO box on the left of the transmission provides front or rear, or both, shaft engagement at either 540 or 1000 rpm. One model of PTO box is 540 only.

--- It is probably not a coincidence that on a 406 Unimog those subsystems are all "beyond" the over-pressure valve. That's the valve that allows air to pass only after reaching a preset pressure. 70 psi comes to mind. The purpose, of course, is to delay supply to secondary functions to...

That black crap looks like asphaltine to me. I had that problem. On an engine which recirculates hot Diesel back into the tank, that heat causes this black beady stuff to come out of suspension, like re-refining the fuel in the tank. Two solutions that I know of: add a large-area filter as...

That black crap looks like asphaltene to me. I had that problem. The cause is that on an engine which recirculates hot Diesel back into the tank causes this black beady stuff to come out of suspension, like re-refining somewhat. Two solutions that I know of: add a large-area filter as the...

I have been offroad with that SEE. It does perform ok but only after it had a lot of work done on it. He winched me up a long muddy slope at Wind Rock. Those Michelin XM-47 tires easily went where my XL's could not. Perfect tires for mud and snow (and even good on the highway). On the...

Case Equipment made a suspension lockout to use on the MB-4/94. Basically it was a link with bearing to the outerhub, tied to the Case deck. During development of the SEE, there was a suspension lockout accomplished by using hydraulic cylinders as lockable links. That idea could be easily...

Toymogger, The grinding of the PTO when it goes into gear is typical but does give you a way to 'test' clutch function. The PTO gearing and shifting is not synchronized, but other gears are. If you press in the clutch, go into 1st (or any other) gear, then try the PTO. If the PTO shifts with...

Toymogger, Congrats on the new SEE. Great trucks! About your clutch trouble, these clutch discs can stick to the flywheel or pressure plate, but in that case the clutch does not DISconnect when you push the petal. You would have power through to the front part of the transmission all the time...

That is classic symptom of air ingress into a fuel line connection. It's a slow air leak 'in' and can't be seen. The air is pulled in by the fuel settling back into the tank while the truck sits. Most likely the leak is before the lift pump but could also be after the lift pump. Try pumping...

--- Hi, I agree completely about safety issue of a loaded SEE at full speed. Perhaps the important issue here is 'where' the SEE is driven hard and fast. In the field with the military is a whole different situation than on highway with soccer moms darting in and out LOL. Regarding the max...

hi SkippyTDI. Not sure what I might have said for you to get combative. Always just trying to help. Max engine rpm on the OM-352 is typically wide open on the governor and that rpm varies somewhat vehicle by vehicle. Typical is 2800 rpm, or whatever seems a safe speed. Earlier OM-352s...

Check your users manual but the hydraulic system used by the backhoe runs off a hydraulic pump that is driven from the PTO on the transmission. If your hoe works, the PTO is engaged. That PTO and pump are not intended to operate at engine rpm in the on-the-road range so always disengage the...

Careful there. If that bucket rotates the least bit you will find the loader embedded in your hood and grill.

Couple of hopefully useful comments based on 15 years of living with a 406 Unimog with front loader and backhoe: First, make a good support for that front loader before you take it off and put it back on. A tall trailer jack makes a good starting point. Two trailer jacks, one on each side...

Sure am looking forward to seeing other Unimog owners at the SS GA rally this year! Bob