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1967? Unimog 406-120
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Discussion Starter #1
1967 Unimog U900: Have removed assembly from rear cross frame member, but destroyed nut and 2 washers on end. Cleaned up tag but difficult to read: What I could read if it helps is "Ringfeder GmbH" Boxes with "Unimog C"? "L652" "???74051" , "G 110" "WEN 451" "101" Fabr… "C2791"

1. is the 2791 the model number?
2. Does anyone have parts breakdown or can you direct me to same?
3. Castle Nut appears to be 30mm x 3.5mm thread with 30mm height and 45mm hex head: does that seem right and can someone point me in direction of where to buy? Also, the 2 washers: 33mm id x 60mm od x .5mm thick
4. The tapered shaft goes in through bracket mounted on rear frame, has a pin with spring through it and goes through a housing assembly. That housing assembly has grease fitting and appears to have a hard rubber/plastic bushing in it (no bearings). Fit is very tight on shaft and I can't seem to slide or push down all the way on tapered shaft-it may have expanded some due to cleaning fluid...but I just want to know if I'm missing something or do I just need to draw it tight with flange bolts to bracket on rear frame.
5. That spring pin which goes through shaft and fits in detents on housing assembly would appear to allow for mounting/rotation 180 degrees; but not sure why/how that would be useful (ie. mounting hitch upside down) Any thoughts on that?

As always, appreciate any guidance or assistance anyone can offer.
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Thanks,
Adman
 

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a couple round ones
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1988 U1300L RW1 Working gears Dual Tanks AC Rigged for Camping Plus: 91 F250 HD 4x4
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188 Posts
3. Castle Nut appears to be 30mm x 3.5mm thread with 30mm height and 45mm hex head: does that seem right and can someone point me in direction of where to buy? Also, the 2 washers: 33mm id x 60mm od x .5mm thick
Adman
Every NA Mogger needs to know McMaster-Carr

Nuts:


The Page:


Metric Extreme-Strength Steel Hex Nuts—Class 12


Class 12 nuts are comparable in strength to Class 12.9 bolts.They'reabout 20% stronger than high-strength steel nuts and often used in heavy machinery, such as earth-moving equipment.
For technical drawings and 3-D models, click on a part number.
Steel—Class 12
SizePitch,
mm
Wd.,
mm
Ht.,
mm
Specifications
Met
Pkg.
Qty.
Pkg.
Thread
M61105DIN 9345094223A101$11.36
M81.25136.5DIN 9342594223A1026.82
M101.5178DIN 9341094223A1035.45
M121.751910DIN 9341094223A1046.82
M1422211DIN 934194223A1093.18
M1622413DIN 934594223A1056.82
M182.52715DIN 934194223A1103.41
M202.53016DIN 934594223A10615.45
M2433619DIN 934194223A1074.09
M2734122DIN 934194223A11120.00
M303.54624DIN 934194223A10810.23
Product Detail

Extreme-Strength Steel Hex Nut, Class 12, M30 x 3.5 mm Thread


Packs of 1
ADD TO ORDER
In stock
M333.55026DIN 934194223A11238.64
M3645529DIN 934194223A11334.09
M3946031DIN 934194223A11445.45
M424.56534DIN 934194223A11556.82
M454.57036DIN 934194223A11686.36
M4857538DIN 934194223A11777.27

Washers:

McMaster-Carr

Lots to choose from, and their catalog has the absolute best layout for searching, of any industrial supplier that I deal with.

Lee
 

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1988 U1300L RW1 Working gears Dual Tanks AC Rigged for Camping Plus: 91 F250 HD 4x4
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188 Posts
Even easier, for someone in Massachusetts, and another excellent resource for Moggers, is BELMETRIC:


My guess is that you will have to fab a castle nut alternative, maybe drill a second, stacked nut for the cotter.

Or, cut 3 cross-slots in the second nut, with a right angle grinder and a cutoff wheel

Lee
 

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1967? Unimog 406-120
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22 Posts
Discussion Starter #5
Thanks Lee. Helpful suggestions re sourcing metric bolts and alternatives if I can't find the right castle nut.

I did a search on forum here and found many pictures of different Unimog pintle hitch models (ringfeder and others). I believe Trucktor had posted many different pictures of models, just wondering if someone could positively identify my model and direct me to parts breakdown. Think this model has been superseded as it is going on 50+ years which is a few years younger than me...

Thanks again,
Adman
 
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