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Posted

Jerry says that Heim Bearing should be lubed with Tri-Flo in the January 2018 MAPA Log. 

I am trying to figure out which lube is recommended for Flap and Aileron hinges.  XPS?  I checked the service manual an found no guidance.

1981  M20J

Thanks in advance for the replies. 

Posted

This is what I use for all my "light weight" oil applications D-5261NS. 

It's mil spec that's listed in almost every airframe MM I've ever worked on. 

Tri-flow is great too if you can't find what spec to use. Like nylon rollers or anything were you'd worry about paterolium wrecking the material, seals etc. 

https://pilotshq.com/zip-chem-aero-lube-5261ns-cleaner-and-penetrate-12oz-aerosol-002056-p-14893.html

-matt

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