ADVANCED AVIATION FORWARD AREA REFUELING SYSTEM MODEL M100A1
REPLACE FUEL TRANSFER PUMP PN 8424 DISCHARGE HOUSING O-RING
Tool Kit, General Mechanics
Anti-Seize Compound, Molybdenum Disulfide
Disconnect pumpage overtemperature cable W103 (1) at engine module electrical connector panel.
Remove the six socket head screws (2) and flat washers (3) that secure the discharge housing assembly (4) to the fuel
transfer pump (5).
Remove discharge housing (4). Use care to avoid damage to the pumpage overtemperature sensor on bottom of housing.
Remove and discard the O-ring (6) from the discharge housing assembly.
Inspect and clean O-ring groove as required. Any debris or foreign material may prevent the O-ring from seating
Inspect discharge valve (7) for dents, bending or any damage that prevents free action or seating. Replace discharge
Lightly lubricate O-ring (6) with petrolatum and install in O-ring groove. Do not allow the O-ring to twist or roll during
Lubricate with anti-seize compound and install the six socket head screws (2) and flat washers (3) that secure the
discharge housing assembly (4) to the fuel transfer pump (5). Tighten socket head screws in a crossing pattern.
Connect pumpage overtemperature cable W103 (1) to engine module electrical connector panel.