Auxiliary Electric Fuel Pump; Auxiliary Electric Fuel Pump Removal; Auxiliary Electric Fuel Pump Installation - Thrush Aircraft S2R–T660 Maintenance Manual

V. Turn off and disconnect APU.
W. Turn battery OFF.
X. Restore the fuel system to its original
configuration. CAPACITY (U.S. GALLONS)
EMPTY
1 Gallon

AUXILIARY ELECTRIC FUEL PUMP

The auxiliary fuel pump is installed on the underside, left side of aircraft cockpit aft of the fuel
header tank. A two-position switch labeled AUX FUEL PUMP on the switch panel electrically
controls this pump. The pump is a positive displacement vane type with a balanced-type relief
valve, and provides a fuel pressure of 20± psi. This pump provides positive fuel pressure for engine
starting and may be used for continuous engine operation in the event of engine-driven fuel pump
failure. Maintenance and disassembly of this pump is not authorized. Therefore, the servicing is
limited to the removal and replacement of the pump.

AUXILIARY ELECTRIC FUEL PUMP REMOVAL

A. Close fuel shutoff valve.
B. Remove drain plug and drain pump.
C. Disconnect electrical connector from motor.
D. Remove hose from pump and cap hose.
E. Remove attaching hardware and remove pump assembly from support bracket.

AUXILIARY ELECTRIC FUEL PUMP INSTALLATION

A. Install pump to support brackets and tighten hardware.
B. Connect hose to pump
C. Open fuel shutoff valve.
D. Connect electrical connector to pump motor.
E. Operate fuel pump and check for fuel leaks at lines and fittings.
Effective: 12/17/03
THRUSH AIRCRAFT INC - T660 TURBO THRUSH
AIRCRAFT MAINTENANCE MANUAL
1/2 FULL
40 (-3, +5)
Gallons
Per Tank
82
82 (-0, +8)
ABOVE 82
UNGAUGEABLE
5 -6