I turned on the master and got no power, so took out battery and fully charged it but still no power. Any suggestions? Any common problems. I own a 1946 Cessna 140 with a C90 engine (Alternator).
Thayne
Master switch on but no power
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- Posts: 63
- Joined: Fri May 17, 2019 12:11 am
- Name: Thayne I
- Location: N87
- Aircraft Type: C-140
- Occupation-Interests: Retired Airline Pilot
- Contact:
Master switch on but no power
Happy flying.
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- Joined: Tue May 01, 2018 7:00 am
- Name: Rob Ramey
- Location: Rose Hill, KS (4KS7)
- Aircraft Type: 140
- Occupation-Interests: Continued Operational Safety Program Manager
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Re: Master switch on but no power
I would check the battery solenoid which should be mounted on the aft side of the battery box. Give it a couple of taps with the handle of a screwdriver and see if that helps. They can stick sometimes.
Rob
Rob
Rob Ramey
1947 C140
1947 C140
- 6597
- Posts: 382
- Joined: Tue May 01, 2018 7:00 am
- Name: David Sbur
- Location: Vancouver WA KVUO
- Aircraft Type: '46 140 0-200A
- Occupation-Interests: Agriculture
- Contact:
Re: Master switch on but no power
This is the old style solenoid and it's on the back of your battery box, it should 'click' when you turn on the master switch. If you don't hear anything then check it for corroded contacts. It's fairly simple.
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- GESolenoid.jpg (44.44 KiB) Viewed 4474 times
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- Posts: 63
- Joined: Fri May 17, 2019 12:11 am
- Name: Thayne I
- Location: N87
- Aircraft Type: C-140
- Occupation-Interests: Retired Airline Pilot
- Contact:
Re: Master switch on but no power
Thank you gentlemen. We did that and no luck so we (me and my A&P) have concluded the selonoid needs to be replaced.
Thayne
Thayne
Happy flying.
- 6597
- Posts: 382
- Joined: Tue May 01, 2018 7:00 am
- Name: David Sbur
- Location: Vancouver WA KVUO
- Aircraft Type: '46 140 0-200A
- Occupation-Interests: Agriculture
- Contact:
Re: Master switch on but no power
That's what I ended up doing....make sure your master switch ground is working first but it's a pretty easy install for the replacement.
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- solenoidnewSmall.JPG (69.81 KiB) Viewed 4466 times
- 6643
- Posts: 2471
- Joined: Tue May 01, 2018 7:00 am
- Name: John C
- Location: KLCI, NH
- Aircraft Type: 1946 C140/C90
- Occupation-Interests: A&P, semi-retired
- Contact:
Re: Master switch on but no power
Me too. After all, the original is over 70 years old...
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- Joined: Tue May 01, 2018 7:00 am
- Name: Martin Tanguay
- Location: Montreal, Quebec, Canada
- Aircraft Type: C140
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Re: Master switch on but no power
David,
I like the aviation ruler. It seems like a vintage piece. Would you have a full picture of it? Just curious.
I like the aviation ruler. It seems like a vintage piece. Would you have a full picture of it? Just curious.
Martin Tanguay
Intl Cessna 120-140 Association - Canadian rep
C140, C-FJAR, 1946, sn:9168, O-200, ragwings
Intl Cessna 120-140 Association - Canadian rep
C140, C-FJAR, 1946, sn:9168, O-200, ragwings
- 6643
- Posts: 2471
- Joined: Tue May 01, 2018 7:00 am
- Name: John C
- Location: KLCI, NH
- Aircraft Type: 1946 C140/C90
- Occupation-Interests: A&P, semi-retired
- Contact:
Re: Master switch on but no power
AOPA used to send one out every year when you renewed. Over the years there have been a few "updates", but they're all similar. If you want one I'm sure I have a spare I could send you. (Don't everyone else respond with "me to," please.)