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-   -   Hydraulic leak - can't find the source (http://www.337skymaster.com/messages/showthread.php?t=5428)

AV8ing 09-13-23 04:35 AM

Can't find the break-out for the up-lock actuator in the IPC - says see Fig 46... in Fig 46 .

Need cross ref's for MS28774 teflon packings .

Need alternative PNs for : S1120-363, S1120-181, S1121-389, S1121-207

Thanks!

TomM 09-13-23 10:54 AM

Airpower
 
With the exception of S1121-207, Airpower has all the Cessna parts numbers in stock for $15 or less each. The S1121-207 must be made of Kriptonite, they have it in stock, but it is $129. So other than that part, the pricing seems really reasonable. Many times they list alternate MS or AN part numbers for Cessna numbers, but not for that part........

RandyArizona 09-13-23 08:54 PM

https://www.airpowerinc.com/s1121-207
$12.39

56 in stock, available to ship now.

RandyArizona 09-13-23 09:04 PM

https://www.cessnaparts.com/?s=S1121...t_type=product

S1121-389
Standard Packaging of 5 items
Info --
RING, BACK UP TEFLON

In Stock $117.88 $103.73 --
S1121-389 quantity

Yep 5 for $103.73
$21.oo each, give or take...

RandyArizona 09-13-23 09:06 PM

I use QWANT for searching parts..
For some reason, it is much better and faster, and usually gives me cheaper, uh hem, "less costly" parts...

RandyArizona 09-13-23 09:13 PM

Unable to find a S1121-329
Are you sure that is a good number??

RandyArizona 09-13-23 09:19 PM

AN6227B series is the cross ref for the MS28775 orings.
Aircraft spruce has them.. the whole series...
And that is enough for me for one day..
Have a great day all ya all.

RandyArizona 09-13-23 09:25 PM

https://military-fasteners.com/ms-se...rings/ms28774/
Ok, now.. really, this is it for me. I have posted way to much today.
Good night

AV8ing 09-14-23 02:29 AM

1 Attachment(s)
Thanks a Randy, you're far more patient than I with dealing with part searchs !


Okay, so the door actuators use standard MS28774 & MS28775, that's easy.

The Cessna PNs are only found on the up-lock / down-lock actuators :

Joes 11-19-23 09:41 AM

Baby powder or foot spray
 
I'm going through the agonizing removal of the center floorboard to get to the uplock actuator to have it overhauled. In this p model they use rivets to attach the panel, what a job. This leak was easily seen. For the small almost undetectable leaks of any type of oil, I have always used a dusting of baby powder or foot spray powder. Having it good and clean before applying goes without saying, just something over the years I've come to rely on. It will draw the oils out of the crack or area applied, easily seen. Joes


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