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#1
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beats the heck out of me, but you have to have your front engine running if you want to pop the gear handle down. It doesn't do anything with the front engine shut off. Also, I think it's an uplock issue, because the doors drop down.
oh, missed that Last edited by WebMaster : 09-29-09 at 08:11 PM. 
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#2
09-29-09, 07:57 PM
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Larry
While tied down on the ramp, after I pumped the doors open I could not pump them back up (with the master on) without dropping the gear handle first and then pumping the doors up until the handle went to neutral. This was all done with the front engine off (rear engine too)
__________________
Herb R Harney 1968 337C Flying the same Skymaster for 47 years
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#3
10-04-09, 12:19 AM
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Check the main gear down lock switches. It is possible they make a very soft contact. I had a similar problem. I had to put a shim on the contact pads so the switch would make a very firm contact. I guess the contact pads wear with time. Additionally, you can replace the switch actuator arm (part number S2112-1) too, without replacing the switch. An actuator arm is only $12, but the whole switch is $100+. Let me know if this helped.
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#4
10-04-09, 07:13 AM
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Herb;
I had this problem (but inconsistent) with the horn. Never tried the hand pump test, but I am not surprised because the light circuit is hooked into the horn circuit, (and into the door solenoid) as you know. I think the prior thread suggesting to look at the switches is a good place to start. I think the solenoid either works or it doesn't. When they were troubleshooting all my problems they tested it by simply putting power to it...if you get a nice solid click, all is find with the solenoid. Bill
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#5
10-04-09, 09:29 PM
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With my gear problem, it worked fine during the manual hand pump down. But in flight, with a dynamic load on it, the switch didn't make a full contact.
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#6
11-07-12, 06:14 AM
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Gear Horn issues
With my '70 C337E. When the gear is up and throttles open horn sounds . Press to test the green light, light comes on horn quiet. When gear goes down, horn quiet, green light on.
Did anyone find a solution??
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#7
11-08-12, 10:24 AM
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HEW
What about your throttle body switches on the engine? Are they adjusted correctly? They should sound the horn when the gear is up and the throttles are pulled back to low power. It is a warning system to alert you that the gear is not down. One on each engine
__________________
Herb R Harney 1968 337C Flying the same Skymaster for 47 years
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