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