79 Oil System

Question 1

The oil system consists of what?

Answer 1

Pressure system, scavenge system and breather system.

Question 2

The self contained lubrication system provides a constant supply of clean oil to what components?

Answer 2

Engine bearings, reduction gears, accessory drives, torquemeter and prop governor drawn from an integral oil tank.

Question 3

Where does the no1 bearing get its lubrication from?

Answer 3

Pressure oil from the filter outlet through a port of the compressor inlet case.

Question 4

the No. 2 bearing, the reduction gearbox and front accessories, power turbine No. 3 and 4 bearings, and the propeller installation get their oil lubrication from where?

Answer 4

A common supply for all these components from the oil filter passage through a cored passage, transfer tube and outlet boss.

Question 5

Thermostatic by pass and check valve is located at the compressor inlet case/oil tank, what is its purpose?

Answer 5

Dircects scavenge oil coming from the oil/fuel heater to the tank (low temps) or cooler (high temps) depending on temperature.