[cigap]

If you are servicing industrial or heavy-duty pump drive assemblies rather than darkroom gear, reviewing a Cotta gearbox guide on Durst drive diagnostics can help identify severe spline wear or shaft misalignments. After reassembling the unit, run the head through its full range of vertical motion to confirm smooth, reliable engagement before putting it back into regular service.

• This reply was modified 4 weeks ago by  cigap.