Which nylon clutch parts? The attenuator gears on mine, that slide to engage, are brass, with what appears to be a standard 45degree tooth face. The only nylon parts are the switch finger cam and the internal tooth gear (both of which are certainly HP custom parts). If you can't find replacements from a donor unit, there is a thread here by a member that did some great gear casting for the 8640 generator gears that suffer the same fate. I don't think HP anticipated these units still being in service 40-50 years later.
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--- In hp_agilent_equipment@..., "jonathan8013" <g4mdc@...> wrote:
Hello All, my first post :-)
I have been searching the group history for any information about a possible source for the Nylon Clutch mechanism that is part of the input attenuator/reference level switch on the above analysers.
I don't have the part number to hand but I could find it.
No success so far.
It seems a particular weakness of these otherwise excellent analysers.
I have an 8558 with the Atten switch completely useless (has been in pieces for years for want of these parts) and an 8559 that is going the same way.
Is robbing parts from another unit the only option?
I don't suppose a 3D printer (a very good one!) might be any solution?
Regards Jon
