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  1. H

    Wirtgen Moldboard

    I'd make it out of the hardest stuff you can weld and drill. The replaceable carbide pieces should take most of the wear and if they're changed in time, should protect the mounting plate you are replacing, but there is always going to be some wear in that area.
  2. H

    1997 1900 DC issues

    1900DC's had non-proportional (on-off) grade control valves, there is also a throttle valve that is adjustable as well as orifices at the valves and at the hydraulic fittings going into the top of the cylinders. These components are all there to slow down the hydraulic reaction time of the grade...
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