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Heavy Duty > Hydraulics > Flashcards

Hydraulics Flashcards

1
Q

Pump

A

Createflow

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2
Q

Oil temperatures should never exceed

A

250 F 125C

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3
Q

contamination in the system is best controlled by

A

Proper maintenance

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4
Q

What is orifice

A

A component that restricts flow and creates pressure drop

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5
Q

What is a Pumps rating

A

Displacement, flow rate , pressure rating

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6
Q

Cracking pressure

A

When pressure is enough to move the ball or poppet slightly not fully

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7
Q

What dose an actuator do

A

Converts fluid power into mechanical power

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8
Q

Cylinder are classified as

A

Single acting \ double acting

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9
Q

What dose a vented system require

A

Tank mounted breather

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10
Q

Where dose the radial lip seal sit

A

On motor or rotating shaft

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11
Q

Dynamic seal

A

Seals a moving component

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12
Q

Static seal

A

Seals in one spot

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13
Q

How much can o rings be compressed

A

10 to 20 percent

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14
Q

U or V packing sit how

A

Open side face high pressure

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15
Q

Where dose the whisper seal sit

A

Along the pin

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16
Q

What oil is used for summer

A

ISO 46 /SAW 20

17
Q

What oil is used in winter

A

ISO 32 / SAE 32

18
Q

How is hydraulic flow created

A

Difference in pressure

19
Q

What dose the term fluid’s definition include

A

Gasses and liquids

20
Q

How is pressure calculated

A

Force divided by area

21
Q

Accumulators

A

A container that stores fluid under pressure/mainly absorbs shock loads/

22
Q

What is a balanced cylinder

A

Has a rod on each side and travels at same speed

23
Q

Bypass

A

A secondary passage for fluid flow

24
Q

Suction pressure

A

The absolute pressure on the inlet side of pump

25
Q

Full flow pressure

A

The pressure at witch a valve is wide open and passes at full flow

26
Q

Static pressure

A

The pressure in a fluid at rest

27
Q

How can a DCV be operated

A

Solenoid/leaver/pedal

28
Q

Piston pumps operate at what pressures

A

5000 psi

29
Q

An electromagnetic switch

A

Solenoid

30
Q

Pressure over ride

A

The difference in the pressure reading from the time a relief valve first opens (cracking pressure) until it is passing all pump flow to tank.

Heavy Duty (2 decks)

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