Servicing

Question 1

Engine oil type

Answer 1

Mobil Jet 254
Secondary: 23699
Cold Weather: 7808

Question 2

Engine oil capacity

Answer 2

7.3 qts

Question 3

APU oil type

Answer 3

Mobile Jet 254
Secondary: 23699
Cold Weather: 7808

Question 4

How long after shutdown to check engine oil level?

Answer 4

20 mins

Question 5

How long after shutdown to check APU oil level?

Answer 5

1 hour

Question 6

APU oil level should be ___

Answer 6

Between “Add” line and a point 1/8” above “Add” line

Question 7

APU accumulator proper pressure

Answer 7

2700-3000 psi

Question 8

APU oil capacity

Answer 8

3 qts

Question 9

MGB oil type

Answer 9

MIL-PRF 85734
Cold Weather: 7808

Question 10

If possible, let MGB sit _____ hours within turning head prior to checking oil level.

Answer 10

6

Question 11

Minimum wait after shutdown to check MGB oil level?

Answer 11

30 mins

Question 12

MGB dipstick
Hot side: ____ - ____ hours
Cold side: Over _____ hours

Answer 12

Hot side: 30 mins - 2 hours
Cold side: Over 2 hours

Question 13

MGB oil capacity

Answer 13

7.5 gallons

Question 14

IGB oil type

Answer 14

MIL-PRF 85734
Cold Weather: 7808

Question 15

IGB oil capacity

Answer 15

2.75 pints

Question 16

IGB: If you have to add more than ____ mL of fluid to properly service IGB, the IGB must be replaced.

Answer 16

300 mL

Question 17

Can you check IGB fluid with tail folded?

Answer 17

No

Question 18

TGB oil type

Answer 18

MIL-PRF 85734
Cold Weather: 7808

Question 19

TGB oil capacity

Answer 19

2.75 pints

Question 20

TGB: If you have to add more than ___ mL of fluid to properly service the TGB, the TGB must be replaced.

Answer 20

400 mL

Question 21

Hoist oil type

Answer 21

MIL-PRF 23699

Question 22

Hoist oil capacity

Answer 22

1100 mL

Question 23

ECS oil type

Answer 23

Mobil Jet 254

Question 24

Hydraulic fluid type

Answer 24

MIL-PRF 83282

Question 25

How far may a hydraulic pump be over serviced?

Answer 25

3/8” into over service

Question 26

Return hydraulic fluid servicing valve to what position?

Answer 26

4 (Rotor Brake/Reservoir)

Question 27

Hydraulic fluid reservoir capacity

Answer 27

1.3 qts

Question 28

No. 1, No. 2, and Back up hydraulic pump capacities

Answer 28

0.84 qts

Question 29

Hydraulic pump low light will come on when pump hydraulic fluid levels reach what?

Answer 29

0.52 qts (60%)

Question 30

What are the Viscous dampers serviced with?

Answer 30

VVD-1078

Question 31

Viscous dampers servicing requirement

Answer 31

0-1” Nothing required
1-2” Service
>2” Damper must be replaced