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9121
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Part No. 568-1-29407 — Pump Part No. 568-1-29408 — Canister The pump is mounted within the canister which is located in the aircraft fuel tank. This allows the pump to be removed without having to drain the tank.This positive displacement vane pump is driven by a fuel flooded DC motor. It provides fuel supply to the APU during start-up, utilising either a ground based DC supply or an aircraft battery supply. In the event of an in-flight engine flameout the pump has sufficient capacity to provide fuel to relight the main engine. The unit has an excellent dry running capability and incorporates a thermal device which terminates the DC supply to the motor should overheating occur. Being a positive displacement pump the reprime capability is very effective. One pump is fitted to each Boeing 777 aircraft. Design Features • Dual purpose: APU supply and emergency engine relight • Canister mounted • Dry running capability • Fuel flooded brushed DC motor with RFI suppression • Reliable, maintenance-free operation • Explosion proof and thermally protected motor • Demonstrated tolerance to contaminated fuel

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Specification Pump . . . . . . . . . . . . . . . . . . . . . . . . Part No. 568-1-29407 Canister . . . . . . . . . . . . . . . . . . . . . . Part No. 568-1-29408 Power Supply . . . . . . . . . . . . . . . . . . 18-29Vdc Flow Rate . . . . . . . . . . . . . . . . . . . . 0.4kg/sec (3,150lb/hr) at 23V Delivery Pressure . . . . . . . . . . . . . . 186kPa (27psig) Current Consumption . . . . . . . . . . . 13A Weight . . . . . . . . . . . . . . . . . . . . . . . 2.34kg (5.2lb) (Pump & Canister) Typical Performance Curves Eaton Aerospace Limited Aerospace Group Fuel & Motion Control Systems...

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9121 2Pages

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9121
2Pages