Powertrain Flashcards
Which transmissions do not have auxiliary lubrication system?
Engine XSMN
How can you identify low oil pressure in the aft vertical shaft?
Maintenance Panel and WCA
What indications will the crew have when a debris screen is bridged with conductive particles?
Debris indication on EICAS, Maintenance Panel, and WCA
The _____ lubrication system lubricates the main generators.
AFT XSMN Main
What should you do if you find an engine or combining transmission oil quantity indication low and the aircraft has been shutdown for more than 30 minutes?
5 min Ground Test then recheck
What is the purpose of the 9 and 4 degree tilt in the fwd and aft transmissions?
Aids in Ground Handling and Ground Taxiing.
What is the location of the temperature/thermal switch that turns on the ENG 1 or ENG 2 XSMN warning?
Bottom of the ENG XSMN
The fluid levels in the combining and engine transmissions should be checked within ____ minutes after engine shutdown.
30
Why must you reduce the electrical load if the AFT XSMN OIL HOT caurion light is active?
Aft XSMN main lubricates and cools generators
What will happen if the maintenance panel is tested in-flight?
Same as ground
What is the emergency procedure for the ENG1 or ENG2 XSMN warning active?
Emergency Engine Shutdown
Affected ENG XMSN- Check
LAND AS SOON AS POSSIBLE
How many synchronizing drive shafts are installed on the CH-47?
9 (7 FWD,2 AFT)
Exceeding VNE with the LCT retracted places excessive stress on what component?
Thrust Bearing
What items in the drive-train system allows the shaft assemblies to flex?
Layered Steel Plates
What reduces vibrations between drive shafts and the aircraft?
Lord Mounts
The quill shafts are located where?
Between the engines and their repsective transmissions
What is displayed if the pressure in an engine transmission is greater than 90 psi?
ENG1 or ENG2 XSMN PRESS HI advisory
What temperature does the ENG1, ENG2, FWD, COMB, and AFT XSMN OIL HOT cautions become active?
140 deg C
At what temperature does the prob/switches in the engine transmission reservoirs turn on the appropriate caution?
140 deg C
Where is the cooling air drawn in through for the forward transmission oil cooler?
Air inlet duct around the synchronizing shaft
What is the purpose of the Power Train system?
To transmit the power from the engines to the rotors
What temperature does the ENG1 or ENG2 XSMN warning become active?
190 deg C
How many transmission are in the Power Train system?
5
When the engine transmission filter differential pressure indicator extends, can the button be reset at the time?
No
When the COMB XSMN OIL HOT caution is displayed, how is the POWER TRAIN page temperature indication displayed?
Red
The left oil pump on the combining XSMN is used for which transmissions?
COMB XSMN main system and the #1 ENG XSMN
At what psi does the maintenance panel MAIN PRESS LO indicator illuminate?
When pressure drops below 20 psi
What drives the forward oil cooler fan?
FWD Transmission?
What automatically eliminates nuisance chip indicator lights caused by minute particles in the transmission oil system?
Fuzz Burn-off System
The aft transmission cooler is located where?
Rear of the AFT XSMN
The AFT XSMN main filter bypass visual indicator must be installed how?
Within 30 deg of vertical, and at the top of the filter housing
