Landing Gear Shock Struts

CHAPTER NINETEEN

T-34C AIRCRAFT SYSTEMS FAMILIARIZATION

WORKBOOK

shock strut. The gearbox, providing mechanical advantage to the DC motor, transmits motion to

the linkage mechanism moving the gear to the extended or retracted position.

Limit Switches

The landing gear limit switches are dual-function, micro type switches mounted on the landing

gear gearbox located under the floor in the front cockpit. The switches are referred to as up-limit

or down-limit switches, depending on their function. When the landing gear are up and the

inboard gear doors are closed the up-limit switch cuts power to the electric gear motor. When

the gear is down and the inboard gear doors are closed the down-limit switch cuts power to the

landing gear motor.

Landing Gear Shock Struts

The landing gear shock struts are the hydraulic/pneumatic type using hydraulic fluid and

nitrogen gas to cushion landing shocks. The main gear shock struts (Figure 19-2) should have 3

inches (approximately four fingers) of oleo showing, and the nose gear shock strut (Figure 19-2)

should show 3-5 inches of oleo. These items should be checked on preflight with full fuel cells.

Scissors

Scissors extend forward and connect the inner barrel to the outer barrel on the main and nose gear

struts. The main landing gear shock strut scissors keep the main wheels aligned with the aircraft's

longitudinal axis (fore and aft). On the nose gear, the shock strut scissor connects to a collar that

allows the nose strut to pivot when taxiing.

Nose Landing Gear

Main Landing Gear

Figure 19-2 Landing Gear

19-4

LANDING GEAR SYSTEMS