Thrush Aircraft S2R–T660 Maintenance Manual page 32

Ground the aircraft and the fuel servicing equipment to the aircraft.
Smoking in or around the aircraft during refueling operations is
prohibited. Fire protection equipment must be immediately available.
1. Turn all the switches off.
2. Remove the fuel filler cap. Fill the tank until the fuel level rises to the filler neck. Install
the fuel filler cap and service the opposite fuel tank.
As the wing tanks are interconnected through the header tank, the
fuel can flow from one tank to another. Topping off both wing tanks
may be required more than one time to assure that both wing tanks
are full.
3. After fueling is complete, check for security of both fill port caps. Wash any spilled fuel
from the wing surface with clean water.
B. Three fuel drain points are provided to allow fuel draining in order to extract the moisture and
sediment entrapped in the system. The drains are located at the bottom of each wing tank
(Fig. 2-2), the header tank (Fig. 2-3), and firewall fuel filter (Fig. 2-4). All fuel drains should be
drained prior to the first flight of the day. Drain a small quantity of fuel into a transparent
container to permit inspection for the presence of moisture or sediment. The fuel should be
drained until all evidence of moisture or sediment disappears. Also provided are two fuel vent
drains located on each side of fuselage under the wings (Fig. 2-5). The last drain port is
provided to drain the residue fuel reservoir. At engine shutdown, fuel from the flow
divider/dump valve, located at the 6 o'clock position on the engines fuel nozzle manifold, is
directed to a residue fuel reservoir "EPA tank" located on the L/H cowl shin skin. This reservoir
holds approximately 3 engine shutdowns worth of fuel before the fuel will exit the reservoirs'
vent system.
2 - 14
THRUSH AIRCRAFT INC - T660 TURBO THRUSH
AIRCRAFT MAINTENANCE MANUAL
*** WARNING ***
* NOTE *
Effective: 12/17/03