Quote:
Originally Posted by dannat
am most of the way pulling apart my old vixen polaris mount (was getting sticky, 25yr old grease). followed astronomy boy cg5 proceedure but am having trouble getting thr RA worm ger out - there are no notches on the bottom thread?? see pics i undid a screw in the notch but its still stuck  |
Daniel, I've stripped a CQ5 and and LXD75 and they are plysically indistinguishable from the mount you're struggling with. So I thinik I can help. But can you just clarify, you can't actually get the RA shaft out of the mount housing? Is that the problem?
Assuming it is, you start by removing the setting circle - there may be a grub screw or 2 to loosen. When you've got that off, look around the rim of the mount housing and you should see a small hole or rebate close to the rim which, if you look down it as you rotate the RA shaft, you should see another grub screw that you have to loosen off. Then there is a compression collar holding the whle thing in place and you'll see two small holes on opposite sides of the shaft. I use a couple of small Allen Keys inthem and use them to gently turn the collar and loosen it. This ought to free the whole shaft and allow you to remove it.
Be very careful to note - as you pull it apart, the presence of any washers. These are usually clear plastic and often get a bit lost in the grease but they are important and need to be cleaned and returned to their position.
When you get the shaft out, you'll still have to remove the worm gear from the head. That can be tricky. Don't use asny brute force. Get a hair dryer and heat up the mount head and let it expand a little. That out to create enough of a gap to allow the worm gear to slip out.
Good luck.
Peter
