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38 Cards in this Set

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What three factors contribute to fluid loss in a hydraulic system?
Leakage, system maintenance, and malfunction.
What are the three types of hydraulic SE used in the Navy?
Portable, fluid dispensing, and stationary.
What size filter does the H-250-1 hydraulic servicing unit use?
3-micron (absolute).
What is the holding capacity of the integral reservoir of a HSU-1 servicing unit?
2 gallons.
On the HSU-1 servicing unit, the sight gauge reads from 0 - 2 gallons in what increments?
1/4-gallon increments.
What size filter is used on the Model 310 servicing unit?
3-micron (absolute).
What is the length of the service hose of a Model 310 servicing unit?
15-foot service hose.
What are the three most common types of fluid level indicators?
Sight glass, gauge, and piston-style.
All support equipment must be maintained according to what publications?
The applicable MIMs and MRCs.
What is the purpose of a portable hydraulic test stand?
They can be connected to an aircraft hydraulic system to provide power normally obtained from the aircraft hydraulic pumps.
What is the power source of the A/M27T-5 portable hydraulic power supply unit?
Model 3-53 Detroit diesel engine.
What is the purpose of the emergency stop handle on the A/M27T-5 unit?
Used for emergency diesel engine shutdown.
What is the range of the high-pressure gauge on the A/M27T-5 unit?
0 to 6000 psi.
What is the main difference between the A/M27T-5 unit and the A/M27T-7 unit?
The A/M27T-7 is powered by an electric motor.
What publication supplies detailed information on the A/M27T-7 unit?
NA 17-15BF-91.
At what level should the reservoir of a hydraulic test stand be maintained?
Three-fourth full.
After you start a hydraulic test stand, what is the first thing you must do?
Allow the engine to warm up to its normal operating temperature.
What actions must be taken prior to connecting a hydraulic test stand to an aircraft?
Recirculation cleaning, de-aeration, and fluid sample analysis.
Once you have the hoses connected to the aircraft, what action must you take prior to applying hydraulic power to an aircraft?
Check the aircraft reservoir levels.
What component is used to adjust the operating pressure of a hydraulic test stand?
Pump compensator.
What is the purpose of a stationary hydraulic test stand?
Used for shop-testing hydraulic system components.
Stationary hydraulic test stands are used at what levels of maintenance?
Intermediate and depot.
Other than hydraulic components, what other types of components can be tested on the HCT-10?
Pneumatic components.
What three things must be externally connected to the HCT-10 unit for it to operate?
Electrical power, water, and compressed air.
How many different test circuits does the HCT-10 unit have?
Three test circuits.
What test circuit is used to test double-acting hydraulic cylinders?
Dynamic test circuit.
What component on the HCT-10 prevents operation when the door of the test chamber is open?
Safety interlock.
Where is the non-bypass filter installed on a support equipment unit used to test or service an aircraft hydraulic system?
Upstream of the major fluid discharge port.
What can be used in place of an approved metal closure to protect fittings on a hydraulic test stand?
Clean, adequately secure polyethylene bag.
What is the purpose of air bleeding a piece of hydraulic support equipment?
It allows entrapped air to escape from a closed hydraulic system.
What is one method used to keep air from being introduced into a hydraulic system when you are replacing a component?
Prefilling replacement components with new, filtered hydraulic fluid.
What function must be accomplished prior to connecting a test stand to an aircraft?
Self-recirculation cleaning.
What cleaner is used to clean all sampling points on a hydraulic test stand?
MIL-PRF-680.
How much fluid must you drain from a hydraulic test stand before you can take a sample?
One quart.
How many different methods are there for decontaminating a hydraulic system?
Four (recirculation cleaning, flushing, purging, and purifying).
What size filter does the hydraulic fluid pass through before entering the purifier tower during purification cleaning?
25-micron (absolute) filter.
What decontamination method would you use for support equipment that is heavily contaminated with particulate matter?
Flushing.
What decontamination method is NOT authorized at organizational and intermediate level maintenance?
Purging.