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  #1  
Old 07-21-16, 10:02 PM
steven coelho steven coelho is offline
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Location: Portugal
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337G Hydraulic Power Pack solenoid problem

Hi everyone!

Im from Portugal.
Hope someone could help me. Ive 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
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  #2  
Old 07-22-16, 11:21 PM
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Red Air Rambo Red Air Rambo is offline
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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
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  #3  
Old 07-22-16, 11:26 PM
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Red Air Rambo Red Air Rambo is offline
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Quote:
Originally Posted by Red Air Rambo View Post
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
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  #4  
Old 08-12-16, 09:32 PM
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Guy Paris Guy Paris is offline
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Service Bulletin on the solenoids

Hi All,

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

Thanks, Guy Paris
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  #5  
Old 08-18-16, 10:35 PM
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Red Air Rambo Red Air Rambo is offline
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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."
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  #6  
Old 08-19-16, 01:36 PM
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Guy Paris Guy Paris is offline
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hydraulic power pack

Do you recall what year the service bulletin on the power pack came out?
thanks, Guy Paris....
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  #7  
Old 08-19-16, 03:57 PM
Kim Geyer Kim Geyer is offline
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Location: Bahama, NC
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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.
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  #8  
Old 08-19-16, 04:48 PM
Ed Coffman Ed Coffman is offline
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SE76-24 for your viewing pleasure
Attached Files
File Type: pdf ourpdf.pdf (43.0 KB, 221 views)
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  #9  
Old 08-19-16, 05:30 PM
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Red Air Rambo Red Air Rambo is offline
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There is also a service bulletin on the actuators, Main Gear is MEB02-7 and nose gear is MEB95-14.
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  #10  
Old 08-29-16, 12:35 PM
steven coelho steven coelho is offline
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Quote:
Originally Posted by Red Air Rambo View Post
Cox Air Parts 316-945-0737
Thanks Brent for your help.
Still having problems with the over heating solenoids.
Ill call him up.


Thanks once again
Steven
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  #11  
Old 10-22-16, 09:17 AM
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kilr4d kilr4d is offline
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Quote:
Originally Posted by Kim Geyer View Post
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.
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