Upgrade to remove ads
Only $35.99/year

G650 - HYDRAULICS

Terms in this set (16)

What's the purpose of Power Transfer Unit?
It provides operational redundancy to left system (especially to get the gear up with failure of left engine on takeoff). It's part of both primary hydraulic systems and, when activated, can power the flaps, landing gear, inboard brakes and parking brakes, cabin door, and nose wheel steering. Ref: AOM 2A
What's the purpose of Aux pump?
It's primarily designed for ground and maintenance operations. It's part of the left hydraulic system and, when activated, can power the flaps, landing gear, inboard brakes and inboard parking brake, cabin door, and nose wheel steering.

Ref: AOM 2A
Where are hydraulic reservoirs located?
There are two (2) hydraulic reservoirs located in forward section of tail compartment (left hydraulic system reservoir on left and right hydraulic system reservoir on the right).

Ref: AOM 2A
A visual sight gage is installed on high pressure end of each hydraulic reservoir and clearly indicates proper FULL and REFILL levels of the reservoir. What is required for an accurate reading?
Electrical power is not required to read the sight gage; however, the system must be pressurized to obtain a correct reading.

Ref: AOM 2A
Describe the engine-driven pump.
It's a constant pressure, variable volume pump, which means it produces 3000 psi anytime the engine is running (except for a pump unloading feature during engine start in-flight).

Ref: AOM 2A
What's the purpose of main hydraulic system filters and what indication would you get for an impending blockage?
To provide hydraulic system components with filtered fluid. A CAS message (deactivated) for impending blockage.

Ref: AOM 2A
What's the purpose of hydraulic heat exchangers and where are they located?
There are two hydraulic heat exchangers: one for each system located in each hopper close to the floor. Functioning as a radiator, the heat exchanger allows surrounding, cooler fuel to cool the hotter hydraulic fluid.

Ref: AOM 2A
How many hydraulic accumulators are there and what's the pre-flight requirement?
Two: one for each system. Check for 1200 psi at 70°F nitrogen pre-charge on preflight.

Ref: AOM 2A
PTU's bearing wear indicator pops to indicate excessive motor bearing wear. What's the required action if it's discovered popped on preflight?
Reset and note time in log book. Continued operation for next 50 flight hours is allowed; however, you need to check it prior to each flight.

Ref: QRH
What are the requirements for PTU operation once it's been ARMED?
1) left system pressure < 2400 psi
2) fluid in left system
3) right system not hot

Ref: AOM 2A
How would the gear and flaps operate differently with the aux pump?
They'd operate much slower due to low flow rate
Ref: AOM 2A
What are the requirements for Aux pump operation once it's been ARMED?
1) left system pressure < 1500 psi
2) fluid in left system
3) left system not hot
4) flap handle position doesn't match flap position OR landing gear handle position doesn't match gear position On ground: left system and inboard accumulator pressure < 1500 psi and brake pedals depressed (ASC 902)

Ref: AOM 2A
How does the Aux pump operate differently in the air when selected to ON?
It operates regardless of hydraulic quantity or temperature; however, it automatically shuts off after two (2) minutes to prevent inadvertent depletion of batteries.

Ref: AOM 2A
What can be done if the Aux pump shuts off due to overload?
Cycle the switch and try it again

Ref: AOM 2A
There are two replenishing systems in the tail compartment. What are they for?
One is for hydraulics and one is for oil replenishing

Ref: AOM 2A
Where would you find procedures for hydraulic servicing?
Handling and Servicing Procedures section of Operating Manual or Ground Handling and Servicing Handbook

Ref: AOM Chapter 9
Sets found in the same folder