Not really, without the proper training. It's best never to take yokes off a CRT unless absolutely necessary. I just transferred a blue 12" gun from a warehouse projector to another one in the owner's home, and did it all without disturbing even one yoke or magnet ring. When I fired up the home set, the only thing that needed obvious attention was the optical focus, because the throw distance of the warehouse projector was a lot longer than that of the home projector, projector to screen. The convergence was very straightforward after that, was pretty much all it needed. It was as if it had never been moved. If I had disturbed the yokes, who knows how long it woulda taken. I didn't want to be the one finding out. Been there done that.
The yokes and all the CRT magnet rings have been placed there in their proper positions and adjusted very precisely by the factory, by trained and experienced experts who do it every day. They are the primary alignment system and are not there for their looks. You don't just slide them off and then slap them back on once your coolant changing op has been completed. They don't just sit there, you don't just mount them and forget them. They are there to be precisely aligned, they are what guide the beam itself.
Hopefully you marked it all well, so you can at least get back close to where you started, and didn't change any of the magnet ring positions relative to each other. The direction they go back on has to be exactly the direction they were originally, front vs. back. Those rings are usually held in place by a white glue of some sort or other relative to each other, and are not to be disturbed ever again, except by experts again.
Your yoke tilt determines the levelness of the 3 images. The placement of the sweep yokes affects the sizing of your pics. One set of the magnet rings do the centering of your pic, others do the astigmatism alignment.
Always start with the green and work your way to the other 2 colors. I usually then do red to the green, then blue to the red. If these objectionable colors are all around your text, it's a focus issue. If only on one side or another, it's a convergence issue.
Again, I am always glad to answer questions from owners if you want to give me a call and set up an appointment. This is a professional operation for professionals in the field, and only certain highly gifted individuals can get it right as DIYers whether they have help or not. And the smart ones call me ahead of time, before they get in over their heads or paint themselves into a corner.
You could use some professional assistance, I betcha.
bEdited by Mr Bob - 10/14/13 at 7:33pm