They were fine thread, but having someone screw coarse thread bolts into them probably changed every thing.
And one seems to be a short hole, this might test my R.A.G. skills..... it's gonna take a long tap handle to get near the problem.
I might be having a small win, three of the stud/bolt holes have cleaned up OK, not sure of the size but I have 2 bolts to fit, I think 5/8th and not a fine thread. The push bolts were fine thread 3/4 inch. The 4th hole has been got at with a large drill bit into I am guessing a broken stud, there is a small hole a bit further in. I have no doubt 3 bolts will probably do the trick, however is it worth running a helicoil or something into the hole for a bit more grab?
I have the parts book, the only studs pictured in the whole book with out size and pitch.... these bloody taper studs.
And do I try and get studs rather than use bolts????
At least itsounds as if your winning so that is a bonus. You mentioned one hole is not as deep as the others. Is there a broken stud inside?
I too had an issue with thread identification on some tie rod ends on the David Brown Cropmaster. It has an unusual
19 tpi and pitch not BSF or Metric so left with no idea of what it is. No end in Oz will fit the taper o/a length and height or the thread. Even the reproduction parts are not a perfectmatch. They are around 5mm longer and the internal thread was not deep enough to allow you to wind the bloody thing on far enough to get your toe in right. The only solution was to cut the drag link down so it would screw on and give me the right adjustment.