Hydraulic System Flashcards Preview

CRJ-900 Limitations > Hydraulic System > Flashcards

Flashcards in Hydraulic System Deck (13)
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1
Q

How many separate hydraulic systems are there on the CRJ 900

A

3

2
Q

Hydraulic systems 1,2 and 3 normal pressure is

A

3,000 psi

3
Q

Low pressure (caution) occurs at what pressure

A

> 1800 psi

4
Q

High pressure occurs at what pressure

A

3200 psi

5
Q

What is the normal system quantity

A

45% to 85%

6
Q

High temperature condition occurs at what temp

A

> 96c

7
Q

The HYD HI Temp caution indicates that hydraulic fluid is hot in what part of system

A

The reservoir

8
Q

How many hydraulics pumps are there

A

6, 3 full-time (A pumps)

3 part-time (B pumps)

9
Q

When will the B pumps operate

A

Switch ON or with switches in AUTO, at least one generator online and flaps >0

10
Q

When will hydraulic pump 3B operate

A

Switch ON or with the switching AUTO at least one generator online and flaps > 0 or ADG deployed

11
Q

What type of hydraulic fluid is used

A

Skydrol

12
Q

What color is the hydraulic fluid

A

Purple

13
Q

When will pressure relief occur

A

> 3750 psi