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Author Topic: 3 point hitch Cat dimensions  (Read 239 times)

damengineer

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3 point hitch Cat dimensions
« Reply #1 on: June 08, 2019, 10:38:29 AM »
My 1220.4 has cat 2, 3 point hitch.   The distance between the lower links is supposed to be 32.48 in according to ASAE specs.  When the arms are spread to 32.48in, the arms are so slanted due to the narrow distace between the lifting arms at the top deck.  This causes a bind when raising sometimes enough to release the quick connect on the balls, and also when I use the hydraulic top link to grade with my box blade.  I bent a 1-1/8 in dia pin in the quick attach frame due to this binding..  The lower lift arms need to be off set more to allow a wider distance for cat 2 equipment.   this is a cat 2 tractor,  CAt 1 implements are not robust enough to hold up to this tractor.. 

I have emailed Arie a couple of times about this.....  I question if the tractor has the correct lower arms perhaps these should be on a lower horsepower model.   They are heavy enough for this tractor..  If the factory has no modifiction available, thei I have no choice but to widen the offset on the lower lift arms.  The method that immediately comes to mind is to cut the arms behind the offset and weld in a spacer block of 1in solid steel or more whatever is needed to create a lift arm that is perpendicular with the axle centerline when expanded to cat 2 dimensions. 
 I have attached a crude schematic as to what is occurring when the arms are spread to cat2 dimensions.
  • MTZ 1220 w/ Kr-34 loader, Belarus 8345 w/ Koyker loader, Belarus 825 w/ Memo loader, White 2-105, Case 1270,
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