Airglas, Inc.
Manual # LH4000-106
19 |
P a g e
MANUAL REVISION B
December 3, 2012
THIS MANUAL INCLUDES INFORMATION PROPRIETARY TO
Airglas, Inc.
AND SHALL NOT BE USED TO MANUFACTURE OR REPRODUCE ANY PART OR
ASSEMBLY WITHOUT THE PRIOR WRITTEN PERMISSION OF
Airglas, Inc.
bungee. Ensure the bungee has at least one full twist when installed. Repeat for the other ski.
6.
Lower the aircraft to the ground and install the LH3600-13 rear check cables.
7.
Install the hydraulic hoses at the fuselage. Secure the hoses to the landing gear using the clips
and ty-wraps.
8.
Remove the ty-wrap from the ski pump circuit breaker and reinstall the fuse to the ski
indicator lights. Remove the “disabled” placards.
9.
Service the ski pump reservoir with MIL-H-5606 or equivalent fluid.
10.
Hoist the aircraft and raise the tail of the aircraft until it is in the level flight attitude with the
tires retracted (skis deployed).
11.
Confirm the skis are installed with a +1.5° tip up in the ski position in level flight attitude.
12.
Confirm that the tension on the bungee cable is at least 80 lbs. Ensure the bungee has at least
one full twist when installed.
13.
Make sure all hardware is installed, torqued, and cotter pinned as necessary.
14.
Cycle the skis to remove any entrapped air. (fill the reservoir with the ski retracted, tires
protruding)
15.
Lower the aircraft to the ground and ensure the skis will cycle. Confirm the indicator lights
work correctly.
16.
Confirm the aircraft weight and balance and equipment list reflect the ski installation.
17.
Confirm the Skiplane Model 180/185 Approved Flight Manual Supplement is in the aircraft
flight manual.
18.
Confirm the placards and markings called out in the Skiplane Model 180/185 Approved Flight
Manual Supplement are correctly located in the aircraft.
19.
Record installation of the skis in the aircraft maintenance records.
5.0 CONTROL AND OPERATION
Control and Operation Information:
The door for the LH4000 Ski Kit is actuated by the
electric/hydraulic pump (preferred) or a manually operated hand pump in the cockpit. The
electric/hydraulic pump is controlled via a 3 position toggle switch and indicator lights that are
located on the instrument panel.
1.
When the switch is lifted up, the cylinder will extend and slide the door under the tire. While
the switch is held up an operation indicator yellow light will illuminate showing the ski position
is selected and the pump is cycling. When the cycle is complete, a second (Skis Locked) yellow
light will illuminate and stay on to confirm full deployment of the skis. As the switch is released
the operation light will extinguish, but the position locked light will remain lit as long as the
skis are extended.
2.
When the switch is pressed down, the door will retract and expose the tire. While the switch is
held down an operation indicator green light will illuminate showing the wheel position is
5.0 CONTROL AND OPERATION-CONTINUED
