[R-390] Cleaning R-390 gears in place before lube

[rbethman]

There is ONE and only ONE solution to the cleaning.

*Take it ALL apart, ensuring that you do so in a manner that you can 
keep very close track as to what goes back where AND in what order.*

Clean everything meticulously!

Separate the split gears, checking for burrs, and use something about as 
coarse as crocus cloth on a plate of glass.

Rinse everything clear with your choice of solvents.  Stoddard solvent 
or denatured alcohol will "normally" clean things up very well.  *IF* 
you have globs of hardened grease, you may have to obtain some 
carburetor/choke cleaner to get it out of there.

*WARNING* Do not use this OR even Stoddard solvent INDOORS!  Ensure that 
you have more ventilation than you can possibly need!  These things are 
EXTREMELY unhealthy to get into the skin or lungs!  Their MSDS, 
(Material Safety Data Sheets), will get your attention if you download 
them and READ them!

NEVER spin a clean dry bearing!  You will damage it it!  I have seen 
entirely too many bearings that have been brought to me after this has 
been done.  Only remedy - replace!

Ensure the split gears ARE free of any possible grit from the abrasive use!

Carefully re-install the entire gear train in the proper order, and very 
lightly lube with Mobile One as you go.

You won't "ever" get the lube into the bearings, over all shafts, and 
between split gears AFTER they are all put back together.  There is NO 
room for it to magically get into these areas that only have a few 
thousands of an inch clearance!

Double check the re-assembly ensuring that all IS in the correct place, 
and the correct order.

Make darn sure that you lubricate the rollers on the ends of the cams, 
and their slots, sparingly.  Some have bearings, some have simply a 
roller on the end of the shaft, and can be more difficult to clean and lube.

It is the ONLY way to get it properly done.

Bob - N0DGN