Lubrication on Condition Inspection

[JDA_BTR]

What is the best way to lubricate the rudder mechanism? Is it just LPS up into the bearing block or ???

[pa38112]

That's it. The bigger question is LPS 2 or LPS 3 ???

[RV6-KPTW]

What is the “rudder mechanism”? Mental review shows pedals, cables, and attachments to rod end bearings on the rear spar.

[Nova RV]

FWIW on my 1st condition inspection I used LPS 2 on the cables through bearing blocks and sleeves and also on the rod end bearings.

[JDA_BTR]

The part I don't know about is the steel tube in the black plastic blocks; the tube rotates as the pedals are pushed. Seems a job to get oil up in there..... I don't see loosening bolts up there at this point.

[JonJay]

Originally Posted by JDA_BTR

The part I don't know about is the steel tube in the black plastic blocks; the tube rotates as the pedals are pushed. Seems a job to get oil up in there..... I don't see loosening bolts up there at this point.

Not familiar with the 14 but assume they use UHMW plastic which is ?self lubricating?.

[Carl Froehlich]

Originally Posted by JDA_BTR

The part I don't know about is the steel tube in the black plastic blocks; the tube rotates as the pedals are pushed. Seems a job to get oil up in there..... I don't see loosening bolts up there at this point.

I used a little white grease for all the UHMW tube blocks on assembly. No need to re-grease unless you take it apart.

Carl

[JDA_BTR]

Had to go find the helpful link to an old lubrication thread:

http://www.vansairforce.com/communit...=163490&page=3

Castrol Brayco 363: MIL-PRF-7870E. Many other brands exist. 7870 lubricant is called out in Piper and many other maintenance manuals as the general use light duty lubricant.

A quart is a lifetime supply I'm thinking and a little syringe delivers it very cleanly.

I like this from my Arrow maintenance manual:
a. Use recommended lubricants. Where general purpose lubricating oil is specified, but unavailable, clean engine oil may be used as a satisfactory substitute. (good to know)

[JDA_BTR]

On further review of the Arrow manual those are called "rudder tube bearing blocks" and they call out "fluorocarbon release dry lubricant MS-122". Not sure if the Arrow has the same material in those blocks but I think I remember they do.

ACS doesn't have the actual MS-122 but this looks similar enough:
https://www.aircraftspruce.com/catal...clickkey=25693

[JonJay]

You certainly can lube them, but it isn?t necessary. UHMW is self lubricating by design and adding lubricant does nothing. Probably won?t hurt if it makes you feel better.