FUEL SYSTEM (Continued)
MAX FUEL TUBE ASSEMBLY. Connects acceleration control to max fuel valve.
START FUEL TUBE ASSEMBLY. Connects acceleration control to start fuel valve.
MAIN FUEL TUBE ASSEMBLY. Connects acceleration control to main fuel valve.
FUEL TUBE BUNDLE. Connects start fuel valve assembly to purge valve.
FUEL TUBE BUNDLE. Connects main fuel valve assembly to manifold and fuel nozzles.
PURGE VALVE TO START VALVE NOZZLE TUBE ASSEMBLY. Connects purge
valve to start fuel nozzle.
MAX FUEL VALVE. The max fuel valve is a solenoid operated valve. The valve is
normally closed and is energized by a signal from the electronic sequence unit (ESU). At
90 percent rated speed, +1.5 seconds, the max fuel valve opens to allow on demand fuel
flow to the main fuel manifold.