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Allan: That coolant filter has always been a sore spot with me. Back when I bought the 1066, I knew nothing about cavitation and the necessity to reduce the problem with coolant filters. IH sold me that tractor without a water filter. Even three years later when the dealer was encountering some problems, I was not told. I found out one day when tractor was 8 years old and very close to 10,000 hours and my coolant started dropping. IH determined that since I put the hours on that fast, that helped in slowing down cavitation. To me, that was little consolation, as had I been asked at 9,000 hours, I would have told anyone my 1066 was headed for 15,000 hours before first engine rebuild. As far as I was concerned that would have been performance plus. Instead I was left saying I'd never buy another IH new, big tractor as long as I lived. Lets face it I was left with an engine not only requiring pistons and sleeves, but the crank had to be turned. Turning a crank on first engine rebuild, left one awful sour taste for IH On the axle versus clamp on duals, the problem I am aware of happened with 806 and 856 equiped with clamp to axle inner wheels. It never occured with wedge locks. Around here in ON just about every 856 has wedge locks, and a couple of dealers told me snap on duals was the reason. Where I farmed in Nova Scotia, I was one of the first to go duals. My duals were axle mount, mainly because dealer sold then to me at same price as snap on's. I have a friend who was farming 2500 acres of tillage crops back in the mid 70s using 2-1066, a 966 and 2-656. Those 1066 never had the 20.8x38 snap on duals off. He had axle duals on his 966 as he used it planting corn 30" rows equiped with a saddle tank sprayer. I know he never had any problems, or I'd have heard about it.
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