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Beech-List Digest: 1 Msgs - 10/28/06

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charlieray(at)optonline.n
Guest

Posted: Sat Oct 28, 2006 11:15 pm Post subject: Beech-List Digest: 1 Msgs - 10/28/06

Check your brushes in the motor. and make sure they are not too old.  There 

is a service kit for older beech that modifies the electrical system of the 

gear that reroutes the high current load out of things like your up and down 

limit switches and changes them to a "control" system.  Im not sure of the 

kit number but we install it in our shop when the gear travel time exceeds 

about 10 seconds. Especially in the up direction, if your system takes more 

than 10 seconds, you should replace the selector switch and the limit 

switches and it would be a good idea to install the kit....



Just an Idea,

Charles



---

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infoserv(at)edge.net
Guest

Posted: Sun Oct 29, 2006 5:14 am Post subject: Beech-List Digest: 1 Msgs - 10/28/06

Circuit breaker itself is suspect. Age can be the original factor and then

being "cycled" several times can mean its retirement time for that one.

Check that before doing more expensive stuff.



Gary





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 From: Beech-List Digest Server <beech-list(at)matronics.com>

 To: Beech-List Digest List <beech-list-digest(at)matronics.com>

 Date: 10/29/2006 12:56:57 AM

 Subject: Beech-List Digest: 1 Msgs - 10/28/06



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                            Beech-List Digest Archive

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                      Total Messages Posted Sat 10/28/06: 1

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 Today's Message Index:

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      1. 02:53 PM - Gear extension  (jmm)

  

  

  

 ________________________________  Message 1 

_____________________________________
	


 	  Quote: 	
		  



 Time: 02:53:58 PM PST US

 From: "jmm" <jmm(at)northboone.com>

 Subject: Gear extension



 I have a V35A.... when we flew it the other day, we had to go to a manual

 gear extension because the circuit breaker kept blowing when we moved the

 switch.



 We have it up on jacks now, and it will pull the gear up very nicely...

but
	


 	  Quote: 	
		   extending the gear is another story.  The gear starts to extend, but then

 after about 3 seconds of operation, the circuit breaker goes.... reset the

 circuit breaker and you have another 3 seconds of operation before it goes

 again.



 We've taken all the connections off and cleaned them without any change.

 There doesn't seem to be any binding when manually extending the gear.



 The plane just came out of annual.  



 Any ideas?



 Mike Maloney



  

  

  





 -- 

10/27/2006

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rob87b(at)earthlink.net
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Posted: Sun Oct 29, 2006 6:46 am Post subject: Beech-List Digest: 1 Msgs - 10/28/06

If you are an  ABS member and have the ABS CD, Lew Gage has a number of articles about trouble shooting the beech landing gear electrical system.



It would seem somewhere you have a high ohm reading causing high current draw on extension.     Usually the gear motor gives trouble retracting, since this is the highest load time, not extending.   It would pay to check the curcuit out with an ohm meter including all the switches.



rob.



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hoot7(at)earthlink.net
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Posted: Sun Oct 29, 2006 7:41 am Post subject: Beech-List Digest: 1 Msgs - 10/28/06

Mike,



  I had a problem where the gear circuit breaker popped every time the gear 

came up. We had the gear motor overhauled, and although it needed it, that 

wasn't the problem.  My AP finally caught that the ammeter was showing a 

load after the gear was up until the breaker popped.    Turned out it was 

one of the gear up limit switches.  There are a total of four normally on or 

off switches plus one for the gear warning horn located under the front 

seats.  One of them was sticking when the gear came up thus not shutting off 

the motor which ultimately caused the breaker to pop.  We replaced all of 

them, and it works fine.  Arrell has them for $13 apiece.  Hope this helps.



Dan Gibson

'66 Debonair, LHM



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oldbob(at)BeechOwners.com
Guest

Posted: Sun Oct 29, 2006 7:59 am Post subject: Beech-List Digest: 1 Msgs - 10/28/06

Good Morning Hoot and Mike,



A very quick check to catch such a failure is to check

the amount of free turn that is left after the gear is

retracted or extended. On all except the very newest

Bonanzas, and derivative aircraft, there should be

between one eighth and one quarter turn of free motion

left after the motor hits the stop switch and the

mechanism hits the internal mechanical stop.



That check should absolutely be made any time any work

is performed on, or any problem develops with, that

landing gear. I check it myself about every

twenty-five to fifty hours of operation all year long.

 

If the mechanism is allowed to hit the mechanical

stops, severe internal damage may occur.



The travel can be easily checked while airborne by

trying to turn the handle to the right, clockwise.

(the cranking UP mode). If you are nervous about

possibly turning it the wrong way, you could pull the

circuit breaker before trying the check, but if the

landing gear has retracted fully, turning it to the

right should not be dangerous at all. If you try to

extend it without pulling the circuit breaker, you

could break a wrist if the motor takes over.



The same method will allow you to check the down

travel after the landing gear has been extended

normally. For the gear down travel check, turn the

handle counter clockwise which is the gear down mode

of operation.



Any help at all?



Happy Skies,



Old Bob

AKA

Bob Siegfried

Ancient Aviator

Stearman N3977A

Brookeridge Air Park LL22

Downers Grove, IL 60516

630 985-8503

--- hoot7(at)earthlink.net wrote:



[quote] 

 <hoot7(at)earthlink.net>

 

 Mike,

 

   I had a problem where the gear circuit breaker

 popped every time the gear 

 came up. We had the gear motor overhauled, and

 although it needed it, that 

 wasn't the problem.  My AP finally caught that the

 ammeter was showing a 

 load after the gear was up until the breaker popped.

    Turned out it was 

 one of the gear up limit switches.  There are a

 total of four normally on or 

 off switches plus one for the gear warning horn

 located under the front 

 seats.  One of them was sticking when the gear came

 up thus not shutting off 

 the motor which ultimately caused the breaker to

 pop.  We replaced all of 

 them, and it works fine.  Arrell has them for $13

 apiece.  Hope this helps.

 

 Dan Gibson

 '66 Debonair, LHM

 

 

 

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