Wright Rain g5 turbine bearings

Got a wright rain g5 irrigator (mid 90s pictured below) and think the turbine bearings want renewing as sounds a little noisy.(presume there are bearings which can be replaced?)
If you take the turbine front cover off how easy is it to renew bearings on turbine shaft, or do you risk wrecking cover due to them being seized on.
Not had one to bits so not sure what is involved.

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JCB launches Fastrac ‘iCon’

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Written by Charlotte Cunningham from CPM Magazine

JCB has launched new Fastrac 4000 and 8000 Series tractors with an all-new electronics infrastructure which is claimed to deliver higher levels of performance. According to JCB, the new Fastrac iCon operator environment has three key features: iConfigure – creating a bespoke control experience for every operator iConnect – integrating advanced precision agriculture technology iControl – redefining operation through new driveline software The 175hp to 348hp (133kW to 260kW) Fastracs feature the new iCon armrest console and touch-screen display to provide flexibility in operator allocation and operator information, as well as a new transmission control strategy to enhance operator comfort and powertrain efficiency, says the manufacturer...