Posted by John Deere D on December 20, 2015 at 22:07:08 from (199.66.168.59):
In Reply to: OT question for JD G posted by David G on December 20, 2015 at 10:28:20:
After a START sequence was initiated, at some point before the Prime Mover (V-16 Clark, V-12 KVS I/R,KVH) was turning over/cranking on starting air, with ALL NG INLET VALVES CLOSED and all NG DISCHARGE VALVES CLOSED as well as the 6">8" RECYCLE line is OPEN (Line connecting INLET HEADER to DISCHARGE HEARDER)50>100 LBS of Natural gas was purged into the compressors. Then the main unit would start to crank. On the V-16 CLARKS there is an air VALVE for each POWER CYLINDER (16). Not the VALVE in the POWER CYLINDER HEAD but the VALVES inside the housing that sits on top of the TWIN CAMSHAFTS. If the setting between the end of the VALVE stem and the LOBES on the CAMSHAFTS are not correct (to much gap) there shall be a lack of air VOLUME admitted to the START VALVES in the Power Cylinder Heads. The valves I'm referring to, are located under a 1 1/2" or possibly a 2" Pipe Plug on the STARTING AIR HEADER with a 1" STEEL line/Tubing connecting starting air to the START VALVE in the head. We required all the Air volume available to start these units.
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