Wipaire WIPLINE 13000, Руководство по обслуживанию

Страница: 17 / 56

SERVICE MANUAL & ICA
WIPLINE 13000 FLOATS
P/N 1002548 Revision H Page 17
Landing gear operation is initiated by movement of the landing gear handle. When the handle is repositioned,
hydraulic pressure in the system will drop and pressure switches will automatically turn on the hydraulic
pump motors to maintain operating pressure in the system. When the gear cycle is completed, the pump will
automatically shut off. If the pressure in the system drops to a preset value, the pressure switches turn the pump
motors back on and build up the pressure to the limit again. Eight (8) position-indicator lights four (4) gear UP and
four (4) gear DOWN are provided to show landing gear position. Two (2) additional indicator lights show when the
landing gear pump motors are operating.
LANDING GEAR HANDLE
The landing gear handle controls a hydraulic selector valve within the control unit on the left-hand side of cockpit
by fuel shut-off handle and has two (2) positions (UP and DOWN LAND) which give a mechanical indication of
the gear position selected. From either position, the handle must be pulled out to clear a detent before it can be
repositioned.
INDICATOR LIGHTS
Ten (10) indicator lights are mounted on the landing gear control unit adjacent to the landing gear handle. Four (4)
blue indicator lights, labeled NOSE and MAIN (left-hand lights for the left float and right-hand lights for the right
float), show by their illumination that the landing gear is up and locked. The four (4) green indicator lights, labeled
NOSE and MAIN (left-hand lights for the left float and right-hand lights for the right float), are illuminated when
the landing gear is down and locked. Neither set of lights is illuminated when the landing gear is in transit. Two
(2) red indicator lights, labeled PUMP ON 1 and 2 illuminate when current is supplied to the landing gear motors.
If the motors continue running during flight or on and off repeatedly, the motors should be shut off by pulling
AMPHIBIAN PUMP 1 AND AMPHIBIAN PUMP 2 circuit breakers. Continual running of the motors can result
in premature motor failure. Prior to landing, the circuit breakers should be pushed in to reactivate the circuits.
Troubleshoot hydraulic problem per section 3.1.
LANDING GEAR OPERATION
To retract or extend the landing gear, pull out on the landing gear handle and move it to the desired position.
When the handle is positioned, pressure on the hydraulic system reduces to where the hydraulic motors
automatically turn on. The motors power the hydraulic pumps and actuate the gear actuator for each gear. During
operation of the landing gear motors the PUMP ON 1 and 2 indicator lights are illuminated. When the gear cycle is
completed, pressure builds up in the hydraulic system and automatically shuts off the hydraulic motors. Each gear
operates independently of the other, and therefore, the position lights illuminate at various times.
EMERGENCY PUMP HANDLE
An emergency hand pump is located on the floor to the left side of the seat for use in the event the normal
hydraulic system fails. This hand pump may be used to retract or extend the land gear. Prior to utilizing the
emergency hand pump, pull the AMPHIB PUMP 1 and 2 circuit breakers to deactivate the electric hydraulic
pumps. Select UP and DOWN using the normal landing gear selector handle. Pump the attached handle back
and forth (approximately 400 cycles). When a gear reaches the selected position, its indicator light will illuminate.
After all four (4) gears are in the selected position there is a noted increase in resistance of hand pump operation.