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Maintenance Tips

Electric fuel quantity indicator stuck past full
Author Last Post
Removed gage from gage cluster. Needle was physically stuck at full. I freed needle with gentle nudge. Problem solved
 
Kevin, their closing, is a loss to all of us.  Thanks for the follow-up message.

Jim



On Nov 2, 2017, at 8:00 PM, Kevin Kaltenbach (Pacnwbuyer@gmail.com) <mailer@mail2.clubexpress.com> wrote:

Thanks Jim,
Called Port Angeles/Fairchild Field and learned that shop you speak of has closed. Got a recommendation for AeroTech at Auburn WA. Called them and they say they can rebuild gage but would like to have sending unit available to calibrate it. A job for later in the winter when weather has me grounded. Chance now to verify Ohm output of my fuel sending unit at full and empty while I continue to look for a new gage.

 
Thanks Jim,
Called Port Angeles/Fairchild Field and learned that shop you speak of has closed. Got a recommendation for AeroTech at Auburn WA. Called them and they say they can rebuild gage but would like to have sending unit available to calibrate it. A job for later in the winter when weather has me grounded. Chance now to verify Ohm output of my fuel sending unit at full and empty while I continue to look for a new gage.
 
I can’t recall the name of the company, but there is one, in Port Angeles, WA, at the airport, that can overhaul or work on these gauges.  I haven’t heard of any complaints from them.  I would suggest calling any of the FBO’s at the airport to find the phone number of the company there.

Jim


On Oct 27, 2017, at 12:08 AM, Kevin Kaltenbach (Pacnwbuyer@gmail.com) <mailer@mail2.clubexpress.com> wrote:

I know cessna electric fuel gages are notorious for not working and untrustworthy. I compensate by physically checking fuel before flight and use a  Shaddin fuel flow computer while flying. My problem is with a 1961 Cessna 180 with cluster style (L fuel qty, oil press, oil temp, R Fuel Qty)  stewart warner type fuel gages and McFadden fuel sending units. Left Fuel quantity needle is stuck pegged past Full with or without power. Initially, left qty would not indicate more than 1/3 full (with full tank). Needle was very slow to rise when master power turned on. While troubleshooting this problem I disconnected leads to the gage to check Ohm readout from my sending unit (read 39 ohms with full tank. In a reasonable range and matching other tank). I suspect a gage problem so next I jumped the leads from my good gage to the malfunctioning gage and gage pegged past full and is now stuck there with or without power. Gentle gage tap no help.

Who has seen the pegged full indication before and what did you do? Thanks!

 
I know cessna electric fuel gages are notorious for not working and untrustworthy. I compensate by physically checking fuel before flight and use a  Shaddin fuel flow computer while flying. My problem is with a 1961 Cessna 180 with cluster style (L fuel qty, oil press, oil temp, R Fuel Qty)  stewart warner type fuel gages and McFadden fuel sending units. Left Fuel quantity needle is stuck pegged past Full with or without power. Initially, left qty would not indicate more than 1/3 full (with full tank). Needle was very slow to rise when master power turned on. While troubleshooting this problem I disconnected leads to the gage to check Ohm readout from my sending unit (read 39 ohms with full tank. In a reasonable range and matching other tank). I suspect a gage problem so next I jumped the leads from my good gage to the malfunctioning gage and gage pegged past full and is now stuck there with or without power. Gentle gage tap no help.

Who has seen the pegged full indication before and what did you do? Thanks!
Here is a picture (before my trouble shooting caused Left Qty to peg)

 
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