Tacho drive core lubrication

[59pacer]

Any suggestions what to use to lubricate the tacho flexible drive core? I've read of using nothing, graphite powder, spray dry lube, lubriplate, and No.5 grease.
With the engine out at the moment, it's no issue to pull the core and treat it.

[Glen Geller]

Various suggestions found on the interwebs, but I like this one because the author bothered to make an entire procedure.
https://www.piperflyer.org/forum/mai...ach-cable.html

Some additional thoughts on the subject:
http://www.aviationbanter.com/showthread.php?t=3141
https://backcountrypilot.org/forum/c...h-cables-22494
https://vansairforce.com/community/s...ad.php?t=71272

[J Ryd]

I did exactly what the Van's airforce guy did in the last link. I dont like using grease or oils because I think it would attract grime. Remove cable from tach and engine; Remove tiny C-clip from end of cable housing; Pull cable out of sleeve; Check cable for kinks or broken strands; Clean and blowout cable and sleeve with brake clean; Feed graphite in slowly while spinning/feeding cable back in. Yes it makes a mess.

Jan

[Steve Pierce]

All the tack cables I have ever removed had grease in them. Both ends are sealed.

[Vagabondblues]

Any suggestions what to use to lubricate the tacho flexible drive core? I've read of using nothing, graphite powder, spray dry lube, lubriplate, and No.5 grease.
With the engine out at the moment, it's no issue to pull the core and treat it.

I kind of expected it to be on the lube chart on the inspection form. Unfortunately it was not.

In my experience, I have found that the FAA prefers some equivalent data over no data, i.e. like not being included on the lube chart.

In this case Cessna has a single engine M.M. entry about using the AC speedometer lube or Lubriplate No. 110.


Todd

[andya]

I got a recommendation from Webco, Comanche specialist, for my PA-30 tach that was jumping around.
It was lubiplate product and that part number seems like it was that one, ie Lubriplate No. 110.. Pulled the inner part of the cable, cleaned it,
then reinstalled from instrument panel to the engine distributing l light amounts with rubber cloves as I put it back it.
Has worked great.

[59pacer]

I used a light application of lubriplate during restoration 17 years/ 1000hours ago, and that has worked fine.
I could get out of bed and wander half naked down the stairs to the hangar to check the number on the side of the lubriplate can, but I'll leave that for a later post!