[GreenKeys] Grease... and the "28 kit"...

[Roy Morgan]

On Jun 3, 2008, at 11:29 PM, Randy or Sherry Guttery wrote:

> The 28 kit project is coming right along - to the point I need to  
> start thinking about some reassembly issues.  Oil is oil - and while  
> synthetic is nice - I'm not convinced it'll do any better in a  
> teletype than plain old 3-in-1 (20W) oil.

OH YES YOU WILL.

Three in One may (I don't know for sure) be one part oil, one part  
solvent, and one part who knows what.

Get some plain oil.  I use Mobil Spindle Oil Medium.  I got a gallon  
from Grainger some time ago at a cost of about $9.00  Now they have  
only ---Light and it costs $12.00  Do you have any idea how long a  
gallon will last you?

For grease, beware of "white lithium grease" aka Lubriplate.  It has  
been reported to dry and get gummy after a while.  I use "Slik=50 One- 
Grease", about $3 a tube at your auto store.  It's teflon based, good  
for any temperature, and will stay put.  (Slik-50 One-Lube is an oil  
apparently only available in a spray can.)

MANY opinions abound.

Some things I'm pretty sure of:

- transmission oil stinks. (That's transmission OIL, not "fluid")
- aviation "high temperature grease" is quite light, and "high  
temperature" means 500 degrees Centigrade or higher.  It turns into a  
sort of oily residue after being hot. Use this only on the correct  
parts of your turboshaft aircraft engines, not teletype machines.
- Molybdenum Disulphide greases are meant for heavy force  
applications, such as wheel bearings in vehicles.  I think teletype  
machines don't have such heavy loaded parts, and that's one reason  
they last for a long time.
- WD-40 had been applied to an M-15 I got.  The carriage return  
actuating lever way at the bottom of the printer was frozen solid on  
it's bearing and had to be freed by hammering a knife blade into the  
edge of the bearing/sleeve.  Do NOT use WD-40 on any part of a  
teletype machine, unless it's to degrease and clean and is followed by  
a thorough cleaning with solvent and application of correct  
lubricant.  Diesel fuel/kerosene/heating-fuel is much better.

-There is no substitute for a thorough, no-spots-missed lubrication  
with good-enough lubricants.

Roy


Roy Morgan
k1lky at earthlink.net
Lovettsville, VA 20180