[SEL] Diesel Engine Starter With Oil Pump

[FRM8198 at aol.com]

In a message dated 10/27/2005 7:11:04 P.M. Pacific Daylight Time,  
Richard_Strobel7 at msn.com writes:

On the  neighbors  old Cat12 grader with the pony engine..one starts up the  
pony first (the pony exhaust heats up the main intake manifold) then  engage 
the pony, bend your neck around to see if the oil pressure is up  and then 
release the compression release.  Me thinks it's just a good  idea to have 
the pressure up.


Rick,
That is the way I remember starting the D4 on the ranch many years  (50) ago. 
 However, the compression release mode is new to  me.  Does this compression 
release cycle come into play when the  throttle rack is closed?  All I 
recollect is opening the throttle (fuel)  rack when the oil pressure was up to start 
the diesel.  Once the  diesel was started, the pony engine was shut down by 
turning its  fuel supply valve off as my Dad didn't like to leave gasoline in  
carburetor.  To shut down the diesel, all that had to be done was to close  the 
throttle rack which had a locking pin.
There was a company in Oregon (1950's era) that sold a  pre-pressurized oil 
system for automobiles.  I believe it had a spring  loaded accumulator that was 
hooked up to the engine oil system with a check  valve.  Thus, accumulator 
could be pressurized with the engine oil and not  leak down.  In parallel with 
this check valve was an  electrical  solenoid operated valve.  This solenoid 
valve was activated when the  starter was energized and this action would 
pressurize the engine's oil system  when starting the engine.  I don't know what 
happened to this company.   

Francis  Maciel
Santa Maria, CA