Just before Christmas I acquired a 76.2mm f=1200mm refractor labelled for the Perfex brand but manufactured by Astro Optical of Tokyo, Japan and very similar to the Tasco 10TE. I believe that Astro Optical sold this model under their own name as the R-74.
Although it was advertised as being a c1968 Tasco 10TE-5 I suspect it is a slightly earlier model (1963 – 1964) based on reading posts by Stephen (Stargoat) and others on CN. The OTA has serial number 272206 and it has the double knob cradle, a white dew shield for the finder, a 7 hole accessory tray, and the RA gear housing is not pre-drilled for a motor drive. It does not have polar axis latitude scale. There is no sign of there ever being a tag on the wooden case. Unfortunately, no manual came with the scope.
First assembly revealed that there was a lot of play in both declination and right ascension together with some stiffness in both axes. The azimuth adjustment was exceptionally stiff. Inspired by Preston’s thread on servicing a Tasco mount (which was a great help, particularly with regard to the right ascension slow motion layout) I decided to give the mount a service prior to first light. As the declination axis of my mount differs from that of Preston’s mount I thought it worthwhile to take some photos – unfortunately due to it being mid-winter and rather dark and gloomy here they are rather dark for which I apologise. Apologies also for the length of this thread, the fact that there are probably too many photos of the disassembly and not enough of the reassembly – I was in a rush to get the mount ready for some observing!
I don’t think this was the first time the mount had been worked on and therefore I can’t guarantee that all the parts that should be present (eg spacers and washers) are present or that they are in their correct location, particularly the order of spacers.
Please chip in you see anything that doesn’t look right or anything that is missing.