Overseas & Need Help on C8 RA Lock
Posted 26 January 2013 - 11:02 PM
Posted 26 January 2013 - 11:44 PM
If it won't tighten down, then possibly the lock plate on the inside has come loose. This will require going into the mount, but that is not too bad to do.
Let me know how it goes,
Posted 27 January 2013 - 08:56 PM
....about 2 hours from Manila, PI....
Posted 27 January 2013 - 09:19 PM
First thing is to get the base apart. The top cap in the middle of the fork should be removed. If there is a screw there, then remove it and see if the base can be lifted off (this was how older models came apart). If it can't then check the very bottom of the base, there may be a nut (possibly with a threaded hole in it) that should be removed. This then should allow the base to be separated. (May need one to hold the base, one to hold the forks.
Once this is separated, look for 3 or 4 screws holding the gear assembly to the central hub (they should be toward the center, there may be screws holding the gear assembly together that are further out, without seeing yours, I can't tell for sure.) The gear assembly (both bottom drive and top adjustment gears sandwich the RA Setting Circle. The gear assembly should then lift out and you can see the RA slow mo gear and there should be a plate (possibly Nylon) screwed in covering the RA Lock Shaft. This is what you are pushing against the top part of the gear plate to lock it.
This link has a great disassembly break out and shows the plate well.
You don't have to take off the fork arms/OTA. Just work over a padded area to set things on. The gear area can be greasy, so don't do it with the fine towels!
Hope this can help you ID what is wrong.
Posted 28 January 2013 - 01:46 AM
Posted 29 January 2013 - 04:52 AM
Posted 29 January 2013 - 08:57 PM
Posted 01 February 2013 - 10:01 AM
Teardown phots there.