G - Landing Gear Fundamentals and Service

Question 1

Two common types of landing gear are:

Answer 1

Drop-leg and gear-operated landing gear.

Question 2

The condition where gear set input is reduced and torque is increased is called:

Answer 2

An underdrive.

Question 3

A gear set has an input gear with 22 teeth and an output fear with 83 teeth. The resulting gear ratio is (?). The ratio is called (?).

Answer 3

3.77 : 1

An underdrive or gear reduction.

Question 4

When a gear-operated landing gear is operated in low speed, crankshaft speed is (?) through gears before being applied to the lift screw.

Answer 4

Reduced.

Question 5

During high-speed operation, the gear box in the landing gear provides a gear ratio of 0.62: 1. This ratio is a/an:

Answer 5

Overdrive.

Question 6

True or False: Lifting and lowering the trailer must be done with the landing gear in high speed.

Answer 6

False; Lifting and lowering must be done in low speed to prevent damage to the gear set.

Question 7

If the landing gear will not stay in gear while cranking, a possible cause would be:

Answer 7

Faulty shift ball and spring.

Question 8

The gears in the landing gear are lubricated with:

Answer 8

Grease.