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0 9 -- 6
Quiz 6
| Question | Answer |
|---|---|
| T or F It is an acceptable practice to remove the tire from a wheel half by use of a screwdriver. | F |
| T or F If aviation grade grease is not available for bearing repacking, it's an acceptable practice to use automotive type grease to replace it. | F |
| T or F Aircraft wheel bearings should be cleaned with steam. | F |
| Aircraft wheels may be cast or forged of either ____ or ____ alloys. | Al or Magnesium |
| What is installed in the inboard half of the main wheels of a jet aircraft to release the air from the tire in the event of extreme overheating? | Fusible plug |
| What method would be used to inspect steel wheel bolts for cracks? | magmetic particle inspection |
| How many fusible plugs must fail before they all must be replaced? - - a. 1- - b. 2 - - c. 3 | 1 |
| The Fusible plugs installed in some aircraft wheels serve what purpose? - - a. facilitate servicing of the wheel assembly - - b. indicate tire tread separation - - c. eliminate the need to check air pressure - - d. melt at a specified elevated temperature | melt at a specified elevated temperature |
| Name an occurrence that would cause a landing gear wheel assembly fusible plug to melt because of an overheating condition: | if a takeoff is aborted and excessive use of the brakes occurs. |
| What would excess axle nut torque applied during wheel installation cause? - - a. Bearing overheat and excess bearing wear - - b. Bearing looseness and excess bearing (cup) cavity wear - - c. Bearing cage looseness and bearing cup wear. | Bearing overheat and excess bearing wear |
| What critical step must be performed priorto disassembly of an aircraft wheel? | DeFlate the Tire |
| What type of non-destructive inspection process is used to inspect an aircraft wheel flange for cracks? - - a. Mag - Particle - - b. Zyglo - - c. Magnaflux - - d. Eddy Current - - e. Dye Penetrant | Eddy Current |
| Wheels are divided into three general types. They are as follows: - - a. _____ - - b. _____ - - c. _____ | Drop center, Split Wheel, re-mountable flange |
| The primary purpose for balancing aircraft wheel assemblies is to: - - a. Prevent heavy spots and reduce vibrations. - - b. Distribute aircraft weight properly. - - c. Reduce excessive wear and turbulence. | Prevent heavy spots and reduce vibrations |
| Why do tire and wheel manufacturers often recommend that the tires on split rim wheels be deflated before removing the wheel from the axle ? - - a. As a safety precaution in case the bolts that hold the wheel halves together have been damaged or weakened. - - b. To remove the static load imposed upon the wheel bearings by the inflated tire. - - c. To relieve the strain on the wheel retaining nut and axle threads. | As a safety precaution in case the bolts that hold the wheel halves together have been damaged or weakened. |
| What is the color of wheel bearing grease ? - - a. Tan - - b. Black - - c. Green - - d. No specific color | No specific color |
| What is the purpose of the O-ring between the wheel halves of a split wheel assy ? | To prevent air leakage from the tubeless tire |
| Where would you most likely find cracks in a wheel bolt ? | at the threads and ???? ref 13-41 see sheet |
| How many bearing sets would be found on a typic I wheel ? | One set of two |
| What would be the wheel rim size of a wheel marked 26 X 6.6 X 14? | 14 inch diameter |
| Small aircraft utilize the ____ type brake system. | independent |
| Independent type brake systems require master brake cylinders. | 2 |
| ln general aviation aircraft, the master brake cylinder is usually installed | Vertically |
| What is the first thing to check if the master cylinder h9s excessive travel? | resevior fluid level |
| Goodyear master cylinders get their fluid from a _____ | external resevoir |
| What brake assemblies are commonly used on aircraft? | Single and Multiple disc |
| The ____ disc types are used on small aircraft | Single disc and Duel disc |
| List the three main manufacturers of popular brake systems in use today. | Cleveland, Dunlop, GoodYear |
| Cleveland brake assemb!ies have the brake disk mnounted? | solid to the wheel |
| Goodyear has the brake housing attached solidly to the ____ flange. | Landing Gear Axle |
| What is the purpose of a compensating port or valve in a brake master cylinder of an independent brake system? - - a. Assists in the master cylinder piston return. - - b. Prevents fluid from flowing back to the reservoir. - - c. Permits the fluid to flow toward or away from the reservoir as temperature changes. | Permits the fluid to flow toward or away from the reservoir as temperature changes |
| If an airplane equipped with master cylinders and single disc brakes has excessive brake pedal travel, but the brakes are hard and effective, the probable cause is: - - a. The master cylinder one way cup is leaking. - - b. Worn brake linings. - - c. Worn brake disc causing excessive clearance between the notches on the perimeter of the disc and the splines or keys on the wheel. | Worn brake linings. |
| Internal leakage in a brake master cylinder unit can cause the pedal to slowly creep down when pedal pressure is applied, this is known as? - - a. Soft brakes. - - b. Hard brakes. - - c. Fading brakes. | Fading brakes |
| How can it be determined that all air has been purged from a master cylinder brake system? - - a.By operating a hydraulic unit and watching the system pressure gauge for smooth, full scale deflection. - - b. By noting whether the brake is firm or spongy. - - c. By noting the amount of fluid return to the master cylinder upon brake release. | By noting whether the brake is firm or spongy |
| What is one effect a restricted compensator port of a master cylinder will have on a brake system? - - a. The brakes will operate normally. - - b. The reservoir will be filled by reverse flow. - - c. The restriction will cause dragging brakes. | The restriction will cause dragging brakes |
| What would be the effect if the piston return spring broke in a brake master cylinder?- - a. The brakes would become spongy. - - b. The brake travel would become excessive. - - c. The brakes would drag. | The brakes would drag |
| If it is determined that spongy brake action is not caused by air in the brake system, what is the next most likely cause? - - a. Worn brake lining. - - b. Internal leakage in the master cylinder. - - c. Deteriorated flexible hoses. | Deteriorated flexible hoses |
| Many brake types can be adapted to operate mechanically or hydraulically. Which type is not adaptable to mechanical operation? - - a. Single disc spot type. - - b. Single servo type. - - c. Expander tube type. | Expander tube type |
| What would be the cause of brake chatter when brake pressure is applied? - - a. Wrong type of brake pads. - - b. Glazed brake pads.- - c. Broken brake pads. | Glazed brake pads |
| What method is used when bleeding a brake system using a pressure pot?- - a. Bottom to top. - - b. Top to bottom. - - c. Out to in. | Bottom to top |
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sampizzuto