Hydraulic Systems

Question 0

Low pressure (Caution) occurs at what pressure?

Answer 0

less than 1800 psi

Question 1

How many separate hydraulic systems are there on the CRJ 900??

Answer 1

3

Question 2

High pressure occurs at what psi?

Answer 2

3200psi

Question 3

What is the normal system quanity?

Answer 3

45% to 85%

Question 4

High temperature condition occurs at what temp?

Answer 4

Less than 96C

Question 5

The HYD HI TEMP caution indicates that the hydraulic fluid is hot in what part of the system?

Answer 5

The reservior

Question 6

How many hydraulic pumps are there?

Answer 6

Six
3 full time (A pumps)
3 part time (B pumps)

Question 7

When will the “B” pumps operate?

Answer 7

Switch ON or with switches in AUTO at least one generator online and flaps greater than 0

Question 8

When will hydraulic pump 3B operate?

Answer 8

Switch ON or
with switches in AUTO
At least one generator online and flaps greater than 0
ADG deployed

Question 9

What type of hydraulic fluid is used?

Answer 9

Skydrol

Question 10

What color is the hydraulic fluid?

Answer 10

Purple

Question 11

When will pressure relief occur?

Answer 11

greater than 3750 psi