dag019
Well-Known Member
If it stops when the prop is removed it is likely to be the prop and I would be replacing the UJ's as they are not expensive parts. Although not under load everything else on the front axle is still turning so although still worth checking as recommended above I would expect it to be a UJ. When were the UJ/prop slider last greased?
Yeah, sounds counter-intuitive, the props off so it stops making a noise therefore it's the prop ... My thinking is if the bearings either end are shot, and the prop puts strain on them whilst running they might protest, whereas without the prop they quite happily just spin away ... 
dag019
Well-Known Member
Definitely still worth checking. Had gearbox bearings go and they only made the noise under engine load. Coasting, engine breaking and constant speed on the flat no problem but accelerate or go up hill and it would howl.Yeah, sounds counter-intuitive, the props off so it stops making a noise therefore it's the prop ... My thinking is if the bearings either end are shot, and the prop puts strain on them whilst running they might protest, whereas without the prop they quite happily just spin away ...
But I have had UJ's that feel fine and that when replaced revealed cups full of rusty dust rather than the needle rollers. For the price of them while the prop is off I would replace them anyway only takes about 5min per joint if they come out nicely.
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