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-   -   337G Hydraulic Power Pack solenoid problem (http://www.337skymaster.com/messages/showthread.php?t=3906)

steven coelho 07-21-16 10:02 PM

337G Hydraulic Power Pack solenoid problem
 
Hi everyone!

I´m from Portugal.
Hope someone could help me. I´ve been trouble shooting a 337G landing gear. Works fine except for both solenoids getting so hot to a point that the pilot touched them and got second degree burn. They are the old sealed ones.

Electrically speaking the gear solenoid is always energised except when landing gear selector is down or when on ground (squat switch), the door solenoid is supplied all the time.

Changing solenoids will solve my problem?

I also read a post that cleaning the solenoids (new type) solved this problem


Thanks
Steven

Red Air Rambo 07-22-16 11:21 PM

Hi Steven, there is a Service Bulletin on the solenoids, I would replace them. You might want to talk to Rick Cox at Cox aeroparts in Wichita, Ks.

Best of Luck,
Brent

Red Air Rambo 07-22-16 11:26 PM

Quote:

Originally Posted by Red Air Rambo (Post 21024)
Hi Steven, there is a Service Bulletin on the solenoids, I would replace them. You might want to talk to Rick Cox at Cox aeroparts in Wichita, Ks.

Best of Luck,
Brent

Cox Air Parts 316-945-0737

Guy Paris 08-12-16 09:32 PM

Service Bulletin on the solenoids
 
Hi All,

Please share the Service Bulletin number for said solenoids for hydraulic Power Pacs.

Thanks, Guy Paris

Red Air Rambo 08-18-16 10:35 PM

I'll check if I still have a copy of it, but this is Cessna's reply on the Skymaster website:
"Cessna does not and it does not allow others to post its service letters and
bulletins on websites. Cessna has a full range of copyrighted service
publications available for owners, including subscriptions to Service
letters and bulletins. Cessna directly distributes such publications to
ensure that accurate, correct, and complete service information is provided
to individual owners for their specific aircraft. If you would like more
information about Cessna copyrighted service publications, please contact
Cessna Customer Services, Telephone No. 316/517-5800 or Facsimile No.
316/942-9006."

Guy Paris 08-19-16 01:36 PM

hydraulic power pack
 
Do you recall what year the service bulletin on the power pack came out?
thanks, Guy Paris....

Kim Geyer 08-19-16 03:57 PM

I think ya'll are talking about SE76-24. It came out in Nov 76
They had a special price of $43.00 ea. Now they are $4100.00 ea.

Ed Coffman 08-19-16 04:48 PM

1 Attachment(s)
SE76-24 for your viewing pleasure

Red Air Rambo 08-19-16 05:30 PM

There is also a service bulletin on the actuators, Main Gear is MEB02-7 and nose gear is MEB95-14.

steven coelho 08-29-16 12:35 PM

Quote:

Originally Posted by Red Air Rambo (Post 21025)
Cox Air Parts 316-945-0737

Thanks Brent for your help.
Still having problems with the over heating solenoids.
I´ll call him up.


Thanks once again
Steven

kilr4d 10-22-16 09:17 AM

Quote:

Originally Posted by Kim Geyer (Post 21075)
I think ya'll are talking about SE76-24. It came out in Nov 76
They had a special price of $43.00 ea. Now they are $4100.00 ea.

Just call it 4.1 AMU's....it softens the pain. :p


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