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Drawbar attaching channel bolt

Y

Yooper Farmall

Member
I brought my 41" H 6 hours north on Memorial Day weekend, getting ready to head back up in a few weeks and decided I need to bring some parts with me but don"t have access to an H to measure bolts.
I worked on food plots with a 2 bottom 3pt plow and a 7 foot 3pt disc. I could see the drawbar assembly was loosening where it connects the whole assembly to the axle. I tightened it up once but was afraid due to the rust threads I was going to snap off the bolt and be dead in the water.
I"ve called my local Case-IH dealer and they said the Drawbar Attaching Channel Bolt (6) is no longer available, they said it is 3/4" fine thread but does anyone have a bolt length? It is the long bolt that attaches the Drawbar Attaching Clamp (10) that sits front of the axle to the Drawbar Attaching Channel (8).
 
Drawbar Assembly Diagram
a44839.jpg
 

I'll go out to the shop later on and measure one for you, but for now, you need to get some penetrating oil and start working on the bolt and nut. Spray it on, back the nut off as much as easily possible, spray some more and then run the nut the other way. Keep doing this until the nut can be turned easily and then tighten it down.
 
If you want original, Parts Depot in Chilton, WI shows they have three #43685D bolts in stock. Your dealer should be able to order them for you.
 
As you can see a regular bolt needs 2 sides grinded a little to go in. Then it doesn't have as much head area to hold as the original. Can weld the head of a regular bolt and grind to the IH shape, but don't know how much it weakens bolt. I measure 8-1/8 long X 3/4 fine thread.
a44852.jpg
 
Great information thank you. Looks like it might be best for me to run a 3/4" fine thread die over the existing bolts and buy a couple 3/4" nuts rather than replacing and grinding new bolts. I could always use a modern hex head bolt and put a washer behind it.
 
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