I change the diaphragm s every 18 months( 30000 acs) to avoid in field problems . The original white ones ( on a Bateman) are poor and go out of shape but the black replacement one s last better.
I have spare parts for the actual diaphragms ( springs and o rings) but very rare to get a problem even after 5 years( 100000 acs). Have half a dozen spare ones and quicker to change whole thing in field on rare occasion when one plays up. Funny enough had first one last week on 2.5 years old sprayer

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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...