Part 4: The Motor
sorry, I'm running out of catchy titles
Getting this motor running again was quite a challenge.
This is what it looked like before I got my grubby hands on it.

- Before Motor3.JPG (298.78 KiB) Viewed 1456 times
Now as long as this isn't a picture of you.
I saw a few people get up and leave when I did the Stevie Wonder joke
You can probably see that the God of rust has laid down a lot of hate on this motor.
The governor shaft is rusted pretty badly and the moving parts have been seized in place.
Also, you'll notice the governor bushing grub screw's head has broken off (that was a mouthful!).
Here's a quick list of some of the things I needed to make this happen...
1. Drill bits, easy-out, thread tap.
2. more of these
3. a few of these
QUESTION:
How many drill bits does it take to drill through a governor bushing grub screw?
ANSWER:
5. You will break 3 and dull 2
The drill and easy-out method wasn't working, so I drilled the screw all the way to the bushing and then re-threaded the hole. It worked perfectly, but I had to use a brass pan screw that I'll have to address in an upcoming part. Once that was drilled out, I was able to disassemble the governor, sand and polish the shaft, replace the springs, and clean and oil the rest of the motor.
I reassembled everything for a test run.
Here's the reassembled motor with the out-of-place pan head screw (at least it's slotted!)

- Motor_Clean1.jpg (244.02 KiB) Viewed 1456 times

- Motor_Clean2.jpg (288.44 KiB) Viewed 1456 times
Here's a video of it working. I had to fine tune it quite a bit to quiet it down,
it's considerably quieter than the diesel tanker engine in my other M
[youtube]
http://www.youtube.com/watch?v=fSUMglxVB38[/youtube]
After this, being the sadistic nut-job that I am, I disassembled it again to try and reduce some
of the rust build up.
I let the parts soak in some evapo-rust for a few hours.
It worked really well without removing too much of the patina. If I had left it over night it
may have come out like new, but I was trying to avoid that. It worked really well on the screws,
the heads look nice and clean without looking brand new. I'm going to oil up the bare metal a bit
to protect it and in case this project fails, I can use it to cook my breakfast on.
Results...

- Motor_derust1.jpg (300.14 KiB) Viewed 1456 times

- Motor_derust2.jpg (342.48 KiB) Viewed 1456 times
I'll now be charging $7000 for de-rusting services...
Next up, the case.
I feel bad for all the forum members who are more into music then machines and may not be
entertained during this process, so this time the intermission is for them.
This is a very rare recording, a 'behind the scenes' if you will, of one of the greatest bands of the 80s
Enjoy (not 10 hours) [youtube]
http://www.youtube.com/watch?v=l56Hdjx0ckg[/youtube]