That does seem a bit difficult. Are the new ones the same length as the old ones?

 

Unknown
Myself, I always keep bits long after everything is done & dusted, just in case. However, not mine in this instance and the bits were binned upon disassembly.......a lesson for everyone who dabbles in mog repairs

 

Can you send me a PM? I have something for you concerning the double kardan (I seem not to be able to initiate a conversation....?)

 

Thanks to Heiko_mog, we now know a bit more about this issue.
The newer joints do indeed need a bit of pressure to make it fit, so hammering it in place is not the go.
Also, some aftermarket parts are not quite compatible. The centre-cross on some is beefier, but causes interference and limits the steering angle - possibly causing damage to the yoke. So, check before re-assembly. The original parts were made by GWB who is now owned by Spicer. The spicer part is K5-769. The original GWB part is 469.30
In some cases the extra material can be removed allowing full steering angle, but at your own peril I would say......
The attachment shows Spicer Australia has 2 Unimog UJ's the one is obviously meant to be the GWB replacement, but the other ? Of note is that the 769 part is shown as 104mm, vs 104.5mm - in addition, the 769 has a 9deg offset - which is correct.
In addition, there has been at least 3 variations over the years with regards to the whole Uni-Cardan setup. Many combinations of getting things wrong therefore exist. It pays to be really careful and comparison to the original part being replaced should be approached with utmost caution.

 

Where did you get the K5-769 Unis from Pieter?

 

Hello Iain, not me !
But you can try VAMPARTS for the OEM units. A0013303335
Closer to home, Ultimate mogs also list them; https://www.ultimatemogs.com.au/product/joint-3/

 

No problem, thought you might have found a supplier without the "MB" box tax

 

Some info I found on FB Aus. Anyone found their joint not to be fully greased?

 

The units are not meant to be greased via the "grease nipples" the threaded holes that are often mistaken for grease servicing, is in fact there to enable pulling out the caps and dismantling the units. Hence, only 2 holes. The MB WSM does not mention servicing the units, but general advice I have come across indicated that they should be dismantled/inspected/repacked with lithium grease at a period determined by the OEM. 40ys, I would suggest is too long a time to expect these units to last. I would suggest they be serviced every 5-10yrs depending on how hard they have been worked.
from Spicer:

 

Interesting. I thought I had read a thread on here where guys were greasing them through there. I was just sharing info in case it might be useful to anyone.