Main Landing Gear Door Hinge Installation Kit Components
Item Number
Description
Quantity
1
Modified C-Clamp
1
2
0.251" Stragith Flute Reamer
1
3
Spacer
1
4
Push Pin
1
Marsh Brothers’ Grease-Free Non-Metallic AeroTough bushings will eliminate any chance of corrosion and reduce wear rates, replacing traditional metal bushings
AeroTough GF is self-lubricating, so they will never require lubrication.
The kits fit exactly the same space that the OEM parts do. However, the most important difference is that the parts in the kits cannot corrode or seize together because of the self lubricating polymer bushings used to replace the steel bushings. If the steel OEM parts corrode and seize, the result is costly repairs to the supporting structure in the wing.
Marsh Brothers developed a new poylmer formula specifically for aerospace which they call AeroTough™ GF, for "grease free". Lubricant is bult into the polymer, completely eliminating any need for periodic lubrication.
It's just a matter of removing the doors, pressing out the steel bushings and then pressing in the replacement parts. The kits include all necessary hardware including new bolts and spacers. Where the OEM sleeve part is flanged, the space is made up with a thin washer. Installation videos are available to demonstrate kit installation.
You don't need to, but it's not a problem if someone doesn't know the bushings have been fitted and decides to put lubrication into the hinges. The bushings will function properly in oil or grease, but it is not necessary.
Related Videos
Main Landing Gear Door Hinge Kits
Bonanza/Baron Landing Gear Door Installation of AeroTough GF Bushings