Hydraulic System Flashcards Preview

CRJ-900 Limitations > Hydraulic System > Flashcards

Flashcards in Hydraulic System Deck (13):
1

How many separate hydraulic systems are there on the CRJ 900

3

2

Hydraulic systems 1,2 and 3 normal pressure is

3,000 psi

3

Low pressure (caution) occurs at what pressure

> 1800 psi

4

High pressure occurs at what pressure

3200 psi

5

What is the normal system quantity

45% to 85%

6

High temperature condition occurs at what temp

> 96c

7

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

The reservoir

8

How many hydraulics pumps are there

6, 3 full-time (A pumps)
3 part-time (B pumps)

9

When will the B pumps operate

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

10

When will hydraulic pump 3B operate

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

11

What type of hydraulic fluid is used

Skydrol

12

What color is the hydraulic fluid

Purple

13

When will pressure relief occur

> 3750 psi