Transmission

Question 1

The MGB oil capacity is

Answer 1

7.5 Gallons

Question 2

The Tail Drive shaft has how many sections?

Answer 2

5 sections (sometimes considered 6 due to the split shaft through oil cooler)

Question 3

How many viscous dampers are along tail drive shaft?

Answer 3

4

Question 4

T/F: The oil cooler is an integral part of the tail drive shaft.

Answer 4

True

Question 5

The IGB and TGB can operate for how long without oil?

Answer 5

60 minutes

Question 6

The MGB can operate for how long without oil?

Answer 6

30 minutes

Question 7

The purpose of the IGB is to change the ____ and reduce the ___ of the drive shaft.

Answer 7

angle ; speed

Question 8

What are the 5 modules that make up the MGB?

Answer 8

2 accessory modules
2 input modules
Main module

Question 9

Where is the rotor brake mounted?

Answer 9

Tail takeoff

Question 10

The main module has a ___ degree ___ tilt.

Answer 10

3 degree forward tilt

Question 11

What MGB lubrication system indications are there?

Answer 11

Oil Pressure
Oil Temp
Low Pressure
Chip Indications

Question 12

The ___ module has a free-wheeling unit for autorotations.

Answer 12

Input module

Question 13

The purpose of the free-wheeling unit is to provide ___ and ___ without engine input (during an autorotation)

Answer 13

Hydraulic and Electrical power

Question 14

The alternator and hydraulic pump is mounted on the ___ module.

Answer 14

Accessory module

Question 15

The Nr sensor is located on the ___ accessory module.

Answer 15

Right

Question 16

The ____ pressure switch is located on the left accessory module.

Answer 16

Main transmission low pressure switch

Question 17

The IGB induces a ___ degree transfer up.

Answer 17

58 degree

Question 18

The TGB and IGB chip detectors also provide what indication?

Answer 18

TGB and IGB “OIL TEMP” EICAS indication

Question 19

The TGB induces a ___ degree transfer.

Answer 19

105 degree

Question 20

The TGB provides a ___ degree built in lift tilt.

Answer 20

20 degree

Question 21

Due to the built in lift tilt of the TGB, the TGB provides ___% of total lifting force in a hover.

Answer 21

2.5%

Question 22

The MGB cooling is provided through a ___ ___ system.

Answer 22

Wet sump system

Question 23

The main gearbox contains how many lubrication pumps?

Answer 23

2

Question 24

The MGB oil filter bypass indicator is located where?

Answer 24

Cabin overhead

Question 25

The MGB oil cooler uses a blower driven by what?

Answer 25

The tail rotor drive shaft

Question 26

How many chip detectors does the MGB have?

Answer 26

5
LH and RH Accessory Modules
LH and RH Input Modules
Main Module