Oil System

Question 1

Oil system capacity

Answer 1

18.5 US quarts

Question 2

Oil tank capacity

Answer 2

10 US quarts

Question 3

Oil system components

Answer 3

Pressure, scavenge, cooling and breather systems

Question 4

What does the oil system provide?

Answer 4

a constant supply of filtered oil to the engine bearings, reduction gears, accessory drives and propeller

Question 5

Pressure system specs

Answer 5

• 2 oil pickup elements
• 1 submerged in oil; collects from center of tank
• 1 collects oil from the top of the tank during inverted flight; stops oil px loss

Question 6

Scavenging system specs

Answer 6

• 2 dual element gear type pumps
• one is inside, the other outside of the accessory gearbox
• returns scavenged oil from bearings and gearbox

Question 7

Cool system specs

Answer 7

scavenged oil is routed through the oil cooler in the lower aft cowling assembly before returning to the oil tank

Question 8

Breather system specs

Answer 8

• oil tank which is integrally cast wit the compressor inlet vents into accessory gearbox by a 4 point breather system
• includes a breather valve + centrifugal breather

Question 9

When engine is shutdown, how many PSI can the oil px display?

Answer 9

up to 4 PSI

Question 10

Oil filter specs

Answer 10

• filtered by main oil filter and several strainers
• if clogged, filter bypass valve allows unfiltered oil to continue to lubricate the engine

Question 11

What system uses transducers downstream of the main oil pump to send signals?

Answer 11

Engine Data Manager (EDM)

Question 12

What does the EDM pass px data to?

Answer 12

Signal Conditioning Unit (SCU)

Question 13

What does the SCU do?

Answer 13

illums warning annunciators on CWS panel

Question 14

SCU failure indications

Answer 14

oil px in normal op range with CWS illumination

Question 15

OIL TRX (oil px transducer) circuit breaker is where?

Answer 15

front cockpit battery bus