Airglas, Inc.
Manual # GLH3000-105
11 |
P a g e
MANUAL REVISION B
27 July 2011
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.
5.0 Servicing Information
Mechanical System – The skis themselves are virtually maintenance free with the top of the
ski being Carbon Fiber and Fiber Glass and the bottom of the ski is Ultra High Molecular
Weight Poly-ethylene (UHMW). The ski bottom has two runners that run the full length of the
ski and are made out of ¼” UHMW. The runners are designed to give tracking stability to the
ski and protect the bottom of the ski. When the runners have worn down more than 50%,
they will need to be replaced. Waxing the ski bottoms for decreased friction and improved
glide is recommended, especially in wet snow.
The Yoke Assembly (GLH3000-5), and Retaining Rod (GLH3000-5-6) need to be checked for
security and proper lubrication. Yoke pivots require light greasing (with any multipurpose
heavy duty wheel bearing grease) every 25 hours and the HMX-6G rod ends will need light
oiling (with LPS-2 or equivalent low viscosity oil) every 25 hours. The yoke is made out 4130
Chromoly Steel. The (GLH3000-10) Yoke Safety Restraining Cable system is designed to keep
the yoke from traveling over-center in the unlikely event of a rigging failure.
The Tail Wheel Bracket Kit (LW2500-18) is made of stainless steel angled brackets with a 5”
aluminum wheel with a solid urethane tire. The cartridge wheel bearings should be replaced
when damaged. When the tire has worn more than 50% the wheel should be replaced.
The rigging is made up of galvanized steel 5/32 cable for the ice cutter, safety cable, and
natural rubber 8020CW cold weather bungee rings for the front assembly and 5/32 cables for
the check cable assembly. The bungees should be kept out of direct sunlight and must not
come in contact with fuel or other chemicals. Any fraying of the sheathing should be noted
and inspected for rubber strand damage or degradation. Swaged ends and cables should be
inspected for fraying and slippage. Hardware should be inspected for security. Replace any
damaged components. Bungee’s should be replaced after 5 years in service or when defects
are noted.
Hydraulic System – The hydraulic system supplied with the skis uses an Electric/Hydraulic
Pump, (a hand pump is optional but not offered through Airglas, Inc.) to pump fluid to a
hydraulic actuating cylinder mounted on the ski. The Electric/Hydraulic Pump is intended to be
mounted behind the cabin area, preferably in the original aircraft battery location. Location is
optional, but G load must be accounted for in the mounting design and method. Hydraulic
lines are routed through the aircraft under the floor and out to the gear legs. Use bulkhead
style fittings clamped to the fuselage structure, and cable ties or clamps to mount the external
hydraulic lines to the landing gear and then connect to the hydraulic fittings on the ski
cylinder. The air is bled from the hydraulic system by cycling the skis several times. The
electric pump is self bleeding. MIL-H-5606 or compatible hydraulic fluid is required for filling,
Page Revision A
