Thrush Aircraft S2R-T660, Maintenance Manual

Page: 33 / 300

THRUSH AIRCRAFT INC - T660 TURBO THRUSH
AIRCRAFT MAINTENANCE MANUAL
* NOTE *
This reservoir should be emptied after each engine shutdown.
* NOTE *
It is common and normal after an engine compressor Water Wash or
Performance Recovery Wash to have water or soap appear in the
reservoirs’ drained waste fuel.
Visually check that all drain valves are closed after draining.
C. The airframe is equipped with two fuel filters, a ¼ inch mesh finger strainer is installed in the
outlet fitting from the header tank and an airframe supplied, gascolator type, 25-micron main
fuel filter located on the forward L/H side of the firewall. Inspect the ¼ inch mesh finger
strainer annually or if the fuel system is suspected or has been contaminated with foreign
debris: i.e. Main fuel filter red bypass indicator was popped, main fuel filter has contamination,
foreign debris noted in drained fuel sample container, known fuel contamination …etc. The
25-micron main fuel filter element should be inspected, cleaned or replaced, and reinstalled
every 100 hours, when the red fuel bypass indicator button has popped, or any time fuel
system contamination is suspected. Refer to chapter 5 for main fuel filter servicing procedures.
*** WARNING ***
If the red fuel bypass indicator button has popped out, determine
and remove the cause of the fuel obstruction before further flight.
Remove, inspect, clean or replace, reinstall the filter 25-micron
element. You may then reset the red bypass button by pressing it
in with finger pressure.
DEFUELING
During the defueling operation, jet fuel fumes are present; therefore, extreme caution must be
exercised to prevent fire hazards.
Effective: 12/17/03
2- 15