Oil System

Question 1

What are all the Functions of Engine Oil?

Answer 1

• Cools
• Cleans
• Lubricates
• Engine Health Indicator

Question 2

What are the components of the (3-element) Oil Pump?

Answer 2

• One Pressure Element
• Two Scavenge Elements
• One for No. 1 and 2 bearings and gearbox
• One for No. 3 and 4 bearings

Question 3

Best way to check the Oil?

Answer 3

With the Dipstick within 30 minutes after shutdown

Question 4

What is the function of the Oil Pressure Relief Valve?

Answer 4

Bypasses oil in excess of normal range to inlet of pressure pump

Question 5

What are the components of the Oil Cooler?

Answer 5

• Oil to fuel heat exchanger design
• Cools oil but does not heat fuel
• Always in use, no thermostatic bypass

Question 6

What are the components of the Oil Filter?

Answer 6

• Absolute rating of 25 microns
• Rated flow of 3.5 GPM
• Filter bypasses as differential pressure approaches 30 PSID

Question 7

What type of Oil is used?

Answer 7

Mobil Jet Oil II/Mobil 254 (MIL L 23699)

Question 8

What is the Maximum Windmilling during shutdown time?

Answer 8

15 Minutes