Another option is to swap to 1” spindles and wheels from a late production Quietline tractor. The 1” bearings are much larger and durable. I did that upgrade on my 129 when I lucked out and found a guy wanting 3/4” spindles so that he could run narrow wheels.
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Adam
1964 Model 100 w/ K301 12hp and custom hydraulics
1972 Model 149 turned 129 w/ K301 12hp, triple hydraulics, 66 series clone
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