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14 Cards in this Set
- Front
- Back
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How many hydraulic systems are there on the CRJ700/900? |
3 systems with 2 pumps (a and b) each to power them |
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Normal hydraulic pressure? |
3,000 psi |
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Low hydraulic pressure Caution? |
Below 1,800 psi |
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High hydraulic pressure? |
3,200 psi |
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When will hydraulic over pressure relief occur? |
Above 3,750 psi |
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What is the normal range for hydraulic reservoir quantity? |
45% - 85% |
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Hydraulic system high temperature Caution? |
Above 96°C |
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How many hydraulic pumps are there? |
6 1A, 2A, 3A, 1B, 2B, and 3B |
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Which hydraulic pumps are A pumps? |
System 1 engine driven pump System 2 engine driven pump System 3 AC motor pump A |
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Which hydraulic pumps are B pumps? |
System 1 AC motor pump System 2 AC motor pump System 3 AC motor pump B |
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When will the B pumps operate? |
Hydraulic control panel switch ON Or Hydraulic Control panel switch in AUTO with at least one generator online, the respective bus powered, and flaps are not at 0° NOTE: hydraulic pumps 1B and 2B are powered by busses associated with their respective cross side engine driven generators |
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With the B pump switches in AUTO, will the B pumps automatically turn on to back up a failed A pump? |
No The operation of the B pumps is triggered by flap position, not system pressure. |
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When will hydraulic pump 3B operate? |
Hydraulic control panel switch ON or Hydraulic control panel switch AUTO with at least one generator online, the respective bus is powered, and the flaps are not 0° Or the ADG is deployed |
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What type and color is the hydraulic fluid? |
Skydrol, Purple |
