One of the 4 bolts that hold the drawbar assembly to the tractor broke. I had a very difficult time getting the broken bolt out. There was about 1/4 of an inch of the bolt sticking out because just the head broke off. Tried a vice grip first. No go. Then I tried heat. No help. Then I drilled a small hole up thru the bolt so I could spray some penetrating oil in from the top. No go. Then tried welding a washer and nut to the bolt. Thought that was working but about 1/2 inch of the bolt broke off and screwed out. Finally I decided there was nothing to do but drill and retap it. Got that done but now the bolt is a little sloppy in the hole. What should I do so it will hold good.. Locktite or is there something better?
- Thread starter JDBRIDER
- Start date
Janicholson
Well-known Member
Thread inserts are the best in a high stress application. Helicoils work, but are much more finicky, and (opinion) not as stout. Plastic thread repair is OK for non critical applications, not this. Jim
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RCP
Well-known Member
- Location
- Grove City Pa
Try tapping the hole as deep as you can to the original size, then thread a stud in Loctite and use a nut on the stud to secure the drawbar.
I had about the same thing on my D17 front axle. Got a helicoil kit from local real parts store. Drill bit tap and helicoil inserts. Puts you back to original size bolt or stud. Have some left think they are 3/4 course thread. If you were close could use kit. Southern Il.
teddy52food
Well-known Member
I used to get studs from John Deere that were over sized on one end. Worked good when std size was loose. I don't know if they still have them.? It would be worth it to check.
Paul from MI
Well-known Member
If you can run a bottoming tap to the bottom of the hole either use a longer bolt or put in a heat treated stud to full depth, then a grade 8 nut. Unless you use the tractor on something like a small baler the pull on the drawbar is pretty much in one direction, so being able to tighten the all bolts should be good enough. Small balers put a lot of back and forth shaking on the drawbar, which can shake things loose.
fixerupper
Well-known Member
A sickle mower will shake it pretty hard. There is no weight but the shaking will make a bolt that is not snug in the hole loose in a hurry.
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