Re: putting together new split rims, tubes & tires
Many new tubes do not have a 'offset' stem as did the old Goodyear tubes. That make installation a bit more difficult, but very doable. If you do not already have a valve stem tool, they are cheap and a worthwhile investment.
Remove the Shrader valve from the stem, insert tube in tire, inflate just enough to size tube to tire, deflate. Check to see if the stem is offset to one side, that is the side to take the rim half with stem hole. Place that half rim in tire and stem in hole. Place second rim in place and assemble one nut and bolt in rims. If your new tires have a tread direction, insure that both tires are set up for both sides of the tractor, stems out.
Now I use two tapered pins to align the other two holes while snugging the first bolt, being careful not to pinch the deflated tube. Remove one tapered pin, install second nut and bolt, repeat. Air up again and deflate, the tube should be seated properly now. Install Shrader valve and inflate to 10 to 15 psi.
With new tires and rims, the rims should just drop in. You can use some Murphy's oil soap to lubricate stubborn tires.
Faux Pas are my forte