gilfachphil Posted November 4, 2007 Share Posted November 4, 2007 Please can anyone tell me how to get the lenses out of a Quartet 22/40 profile in order to clean them? I have removed the four long screws from the front of the lantern (as with a prelude profile) expecting to get inside the lens tube! Silly me. Ended up with the complete lens tube, which does not seem to open up, and a pile of shutters and gates on the floor. Phil. Link to comment Share on other sites More sharing options...
Mr Steve Posted November 4, 2007 Share Posted November 4, 2007 That's the right way to do it, but getting a Quartet zoom back together is one of the biggest pains in the ar*e in the world. You have to hold it all together while trying to line up the screw holes in the lens tube and the gate assembly. Link to comment Share on other sites More sharing options...
gilfachphil Posted November 5, 2007 Author Share Posted November 5, 2007 Oh goody! But how do you get inside the lens tube to clean the inside faces of the lenses where most of the crud is? Phil. Link to comment Share on other sites More sharing options...
adamharman Posted November 5, 2007 Share Posted November 5, 2007 I don't have one here to look at, but isn't the lens tube 2 seperate extrusions with the lens adjustments running through the gaps between them? If I'm correct, the lenses should just slide right out of the end........ Link to comment Share on other sites More sharing options...
boatman Posted November 5, 2007 Share Posted November 5, 2007 Just slide the two extrusions apart. As Mr Steve said, putting it back together is a real PITA. In true Blue Peter style; "Here's one I did earlier". http://img.villagephotos.com/p/2006-5/1185528/Quartet_22_40_dismantled.jpg Link to comment Share on other sites More sharing options...
Neil Hampson Posted November 5, 2007 Share Posted November 5, 2007 Referencing the above picture, I have had the pleasure? of cleaning a few Quartets a few weeks ago. I found the best thing to do is to use the yoke of the lantern to stand the unit vertically, lens up, as you undo the screws and the gel frame holder and the lens tube, this ensures that the shutter assembly stays in place. Leave the screws in the lens assembly and you will find the lens tube is stays intact, you can then slide the 'top' exstusion off and clean the lenses while still in the lens tray it is easier to tape the gel frame holder to the lower tray with masking tape to make sure they hold together. To re-assemble you should then be able to slide the top cover into the extruded bottom section, using the screws as a guide. the complete lens/gelframe assembly should then 'easily' locate onto the lamphouse. On a related note the Quartets I serviced al had screw type lock offs for the zoom, were all of the others I have seen have a friction lock. Were these a special or a very early version? just wait until you need to replace the power cable. . . Oh what fun we had! It took over 1/2 and hour to get to the choc block. Link to comment Share on other sites More sharing options...
Richard Bunting Posted November 5, 2007 Share Posted November 5, 2007 On a related note the Quartets I serviced al had screw type lock offs for the zoom, were all of the others I have seen have a friction lock. Were these a special or a very early version? The Mark 1 had a toggle action handle, but due to tolerance and wear issues, these were replaced with locking screw handles on the Mark 2 version in 1997. Richard Link to comment Share on other sites More sharing options...
gilfachphil Posted November 8, 2007 Author Share Posted November 8, 2007 Many thanks to all. I am now armed with the picture and will have another go. Should I sit next to a brick wall during the procedure? Phil. Link to comment Share on other sites More sharing options...
boatman Posted November 8, 2007 Share Posted November 8, 2007 Many thanks to all. I am now armed with the picture and will have another go. Should I sit next to a brick wall during the procedure? Phil. No, you might hurt yourself. Karma pills and whale music will probably help though. :) Have fun. Link to comment Share on other sites More sharing options...
Renny Posted November 9, 2007 Share Posted November 9, 2007 My advice, never even attempt to take them apart. If you do a dozen guaranteed that there will be at least 6 that have you swearing like you didn't realise you could and wanting to smash them to pieces. And as for rewiring Quartets. YUK! Link to comment Share on other sites More sharing options...
gilfachphil Posted July 6, 2008 Author Share Posted July 6, 2008 I finally got brave enough, and had time on my hands to have a go yesterday. I can report that it did not involve as much dismantling as I had thought. First I took out the four shutters. Then by loosening all four screws in the front plate and completely withdrawing just the lower two of them the lower half of the lens tube casing will come out giving access to the lenses. Re-assembly causes much bad language since it is difficult to get the blanking plates on which the lens slides run lined up properly with the slots in the lens tube casing moulding, however this gets easier with practice. The improvement in light output was very noticeable! Phil. Link to comment Share on other sites More sharing options...
Trunker Posted July 6, 2008 Share Posted July 6, 2008 On a related note the Quartets I serviced al had screw type lock offs for the zoom, were all of the others I have seen have a friction lock. Were these a special or a very early version? The Mark 1 had a toggle action handle, but due to tolerance and wear issues, these were replaced with locking screw handles on the Mark 2 version in 1997. Richard Do anyone know a company that has spares of these 'friction locking toggles'? I am missing some off my quartets, making them redundant atm. Many thanks And as for rewiring Quartets. YUK! O' yes I will second this! Link to comment Share on other sites More sharing options...
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