Cdc Vol 3 Ure

Front 1

What is the wire screen called in a non-pressurized reservoir?

Back 1

Finger screen

Front 2

What is the purpose of a standpipe in a reservoir?

Back 2

Reserve fluid for the emergency pump.

Front 3

During one complete cycle of a single acting double displacement type hand pump, fluid is drawn in through the inlet (supply) line on

Back 3

one stroke and forced out on both strokes

Front 4

Why don’t variable-volume pumps require a separate pressure-regulating device in the system?

Back 4

They have an integral flow control valve (compensator)

Front 5

What principle does a filter assembly with a differential pressure indicator operate?

Back 5

Difference between pressure entering the element and pressure leaving the element.

Front 6

Hydraulic manifolds are used in a hydraulic system to provide a location where

Back 6

common fluid lines can come together.

Front 7

What should you do to ensure an automatic check valve is installed properly?

Back 7

Make sure that the arrow marked on the valve housing is pointing in the direction of free-flow.

Front 8

On which line is a manually-operated check valve usually installed?

Back 8

pressure

Front 9

Which type of shutoff valve gives a positive indication of the position of the valve?

Back 9

motor-operated

Front 10

If a relief valve with a ball seat area of 1/6 sq. inch is to relieve 1800 pounds per square inch (psi), the spring force would be

Back 10

300 pounds

Front 11

A balanced outlet relief valve

Back 11

eliminates the effective area that back pressure can act upon

Front 12

In the poppet-type solenoid-operated selector valve, the poppets are attached to the solenoids by a

Back 12

plunger

Front 13

The difference between a selector valve and a servo valve is that the

Back 13

servo valve will control fluid flow.

Front 14

Within a tandem actuator that utilizes a power control cylinder, what component allows fluid to position the actuator cylinder?

Back 14

Slide control valve

Front 15

How is the selector valve in a nonautomatic hydraulic actuating system controlled?

Back 15

Manually by the operator

Front 16

In an electrical follow-up system, the follow-up action will catch up and neutralize the servo valve when the

Back 16

input and follow-up transducers send the same signal to the amplifier.

Front 17

Which type of orifice allows normal speed of operation in one direction, but limits speed in the other?

Back 17

check valve

Front 18

Hydraulic flow regulators regulate fluid-flow

Back 18

in one direction only

Front 19

If fluid does not split evenly in the flow equalizer, a

Back 19

free floating piston shifts position.

Front 20

What is the purpose of installing sequence valves in a hydraulic system?

Back 20

So one operation is performed before the rest of the system can operate.

Front 21

In a typical electrically sequenced system, what unit is used to ensure proper sequencing?

Back 21

micro switch

Front 22

In an emergency, the engine-driven hydraulic pump shutoff valves may be operated by

Back 22

pulling the T-handle

Front 23

When electrical power is lost in a hydraulic power system, what would be the position of the solenoid-operated shutoff valves?

Back 23

open

Front 24

When the pump low-pressure warning light illuminates while the engines are running and the pressure reading on the accumulator pressure gauge reads low, the first component that should be suspected of having a malfunction is the

Back 24

engine-driven pump

Front 25

If when the engines shutdown, one of the engine pumps low-pressure warning lights fails to illuminate, what would be the first thing you should check?

Back 25

Press-to-test feature of the warning light.

Front 26

When filling a system reservoir, you must observe the fluid level, because overfilling may cause the reservoir to

Back 26

rupture

Front 27

When bleeding a power system, how much additional fluid should you bleed out after air bubbles are no longer evident?

Back 27

one quart

Front 28

What must you do anytime you install a jumper wire in any system?

Back 28

Place a write-up in the aircraft forms under a Red X.

Front 29

When taking fluid samples on a hydraulic system, you should

Back 29

take the sample from the reservoir and various other locations in the system.

Front 30

If a hydraulic system is found to be contaminated, where should you begin draining the affected system?

Back 30

Reservoir

Front 31

When accomplishing a piston seizure test on a hydraulic accumulator, hydraulic pressure, measured in pounds per square inch gauge (psig), should not exceed

Back 31

50 psig

Front 32

Which test should you perform to determine if the accumulator piston seals are leaking or bypassing?

Back 32

An internal leakage test

Front 33

When performing an internal leakage test, air bubbles coming out of the accumulator end cap indicates

Back 33

internal leaking of the accumulator piston.

Front 34

The purpose of the fluid quantity system test is to test the

Back 34

indication system

Front 35

During extension and retraction, what unit slows the landing gear as it approaches the DOWN AND LOCKED and the UP AND LOCKED positions?

Back 35

Spring-loaded sliding-valve snubbing assembly

Front 36

Refer to Foldout 3 for the following question. During a landing gear operational check, the main and nose gear fail to retract. You’ve determined that hydraulic pressure is available to the selector valve. What valve in the landing gear system would be the probable cause?

Back 36

Selector

Front 37

Refer to Foldout 4 for the following question. During an operational check of the landing gear system, the nose gear fails to extend, but the doors open. Further investigation reveals that the nose gear actuator has no pressure to it. What would be the probable cause?

Back 37

Nose-gear sequence valve.

Front 38

What would you use to remove the sleeve from a selector valve body?

Back 38

Wooden dowel

Front 39

While disassembling a selector valve, you notice an “X” marked on the sleeve of the shuttle and sleeve assembly. It is marked in this manner to indicate

Back 39

proper position of matched parts.

Front 40

If the steering became sluggish, what item within the metering valve might you suspect of causing the problem?

Back 40

Metering valve filter has become clogged.

Front 41

In the event a brake line ruptures and the hydraulic fuse sets, how much hydraulic fluid (in cubic inches) will be lost?

Back 41

40 (+10/–0).

Front 42

After receiving a write-up for dragging brakes, you have checked the brake adjustment and found it to be correct. The next logical step in troubleshooting the problem is to check the

Back 42

return pressure

Front 43

During a post flight debriefing, the pilot reports that the antiskid is completely inoperative. Upon inspection you find that the antiskid switch is ON, and all circuit breakers are engaged. What is the next component you would check?

Back 43

Antiskid control box

Front 44

When disassembling a brake, you should not disassemble the grip and tube parts of the assembly because they are

Back 44

mated parts

Front 45

In the aircraft’s roll axis, what system compensates for imbalance or external environmental conditions that affect stabilized flight?

Back 45

trim

Front 46

What flight control surface is used to augment the ailerons to achieve the roll rate commanded either by the pilot or autopilot?

Back 46

spoiler

Front 47

If during a preflight check the pilot noted that he had no roll input in the mechanical mode of operation, what is the first thing that the hydraulic technician should do?

Back 47

Look at the appropriate Fault Isolation (FI) manual.

Front 48

What is the position of the boom hoist lever when the boom is being flown?

Back 48

Freewheel

Front 49

In the air refueling (A/R) system, what connects the tandem surge boots to the fuel-tube weld assembly?

Back 49

Gland nuts

Front 50

If the air refueling (A/R) READY indicator light fails to illuminate with the A/R master switch to ON, what faulty component is the most likely cause?

Back 50

Signal amplifier circuit breaker

Front 51

What is a probable cause if the air refueling (A/R) signal system fails to advance to MADE condition upon contact with the receiving aircraft?

Back 51

Signal coil

Front 52

During breakaway of the air-refueling nozzle, what valve prevents excessive pressure buildup in the toggle actuators?

Back 52

Relief

Front 53

Energizing the air refueling (A/R) slipway door control valve to the open side will direct hydraulic pressure to the

Back 53

open and close side of the slipway door actuators.

Front 54

What component aids in forcing the cargo door down?

Back 54

Hydraulically actuated downlocks.

Front 55

What component unlocks the ramp?

Back 55

Electro-mechanical actuators

Front 56

Which panel allows you to manually operate the cargo door and ramp?

Back 56

Aft loadmaster’s control panel

Front 57

The ramp raises, but fails to lock once the control switch is released, what would be the most probable cause?

Back 57

Latch actuators

Front 58

At what minimum pounds per square inch (psi) pressure in the door close line, will the bomb door control valve ground check light illuminate?

Back 58

1500 (±50)

Front 59

What hydraulic component in the bomb door system controls normal and emergency hydraulic pressure to the forward door hydraulic actuator?

Back 59

Dual shuttle valve

Front 60

What would happen if you try to open the bomb doors with pressure in the door close line, as indicated by the illuminated ground check light?

Back 60

Damage to the aircraft could occur