DaveMC

so quick question. if I run LOP for example 25 deg LOP and my TIT is over say 1650 if I lean further to say 50 LOP the TIT should come down?

UPDATE new temp probe installed and she is up and running again! easy peezy.

There is a clip?????? Do you have any pictures of the retaining clip or a source?

yeah He was pretty certain and even told me where to get one. I interestingly enough once the temp probe was disconnected and a on the ground test was run the failure was identical. we will see when a new one gets installed

Sarasota Avionics.... they are the bomb

Hello all, There I am launched out of my home base and just got my IFR clearance (can't get them on the ground by radio) get my assigined altitude and heading. I establish my heading and climb while in VMC. Dial it into my G500 and engage my auto pilot and BAM I get the failure pictured below and the autopilot shuts off. So. not wanting to go into a HARD IFR situation with "something" wrong I bagged the trip and landed at the neighboring airport that has an avionics shop. Did a quick check and everything seemed ok so tried it again and had failure at the moment of engaging the autopilot. Called the shop the installed and they emphatically stated that It was most likely that I needed a new temp probe. GTP 59.. explanation was that because TAS and SAT are Xed out the flight computer sends that as a failure to the GAD43 and that shuts down the autopilot. Interestingly, I had noticed on the previous several flights aft the Garmin temp probe has given a very different reading that the other two (last picture) and it seemed to vary more at more extreme tempreatures. Any smart guys here confirm the shops statement. seems silly that a lil ol temp probe failure would turn off the autopilot. not that Im complaining cuz it that all it is then that is a much more inexpensive fix. any help appreciated.

Thank you all for your help and suggestions. I thought I would post a detailed account of my experience and chalanges and what I did in case it might help someone else. I have a 1994 Bravo TLS First, taking the side panel off was a lot easer than I thought once I did two things. remove the pilots side rear seat and remove the retaining nut on the oxygen knob. Obviously the pilots sent needs to be removed. I took out both front seats to make the job easier. On the arm rest electronics I marked one with a sharpie and took pictures of their current positions to speed the reassembly. The coiled wire that the solid wire moves in is porous so spraying triflow in one end or the other only gets the lubricant about a foot or so down the line. so I sprayed any exposed coil wire along the length with a bit of triflow. reasoning that it would penetrate into the hollow core. It worked. I held a cloth behind the wire to prevent oil overspray from getting all over. I also sprayed the wire during insertion. The core wire: Comes pretty tightly coiled and I used the link Larryb provided (Thank you Larry). I used the old wire to measure the approximate length and cut it about a foot longer to have plenty to work with. I made the tight small end coil using a small gauge screwdriver in a bench vice and a pair of pliers , and it made a very nice coil. I drilled a hole, just ever so slightly bigger that the core wire, in a piece of 2x4 in a bench vice. I then ran the new wire through the hole working it back and forth to get the majority of the shipping coil out of it. In affect straightening it. Then insert the core wire and thread it to the tank. At the tank end I used a pair of pliers to pull it and guide it into then tank switch clamp. and did not tighten the clamp yet so the wire would slide back and forth while I was adjusting the pilot end of the wire. Then back in the airplane to push it the rest of the way in. On my first try I put the coil over the post with the running end toward the inside and on the bottom,(see pic below) thinking that this was the best way to avoid it "popping " off. I was wrong. see pic. All this did was to create a binding effect, that both opened the loop and produced torque moving the loop off of the post. So I reversed, putting the coil towards the inside and the running end over the top and BINGO!! and IMG_4443.mov As you can see in the video there was quite a bit of motion at the peg so I twerked the end a little inboard and it was fixed!! IMG_4445.mov The videos are taken with the mechnisum screwed back in place in its normal position. I hope this is helpful to anyone else who has to go through this. I got really good at getting access and after doing it several times was able to get it completely apart in under and hour and about the same getting it cack together. PS: I also tightened the valve end too tight once severing the wire to be carful on that end. Tailwinds Dave

Thats what I thought. But nope no retainer and no hole

There is some pressure on it particularly when I am threading the inner wire. I need to get lubricant further aft so I am going to try and use some triflow further aft. other than that I have no clue

So I got her all apart AGAIN It did slip off. so I recut it and made a very tight coil. reassembled it and worked it back and forth a few times and this is what it looks like. the coil is un-tightening as you move it back and forth. This is such a bad design. Anybody do anything different to keep the coil from doing this.

Yeah it liked justice that and I thought I did a really good job of making a tight coil. I was worried it might slip off just because of the angle of twist in the cable. Ill be pulling it all back out tomorrow just wonder if anybody. had any tricks about getting it yo stay on.

I made a good loop using a small caliber screwdriver. I think it just slipped of. I was honestly wondering how in the heck it was inns stay on in the first place. there is nothing there to prevent it from slipping off.

Sooooooo. I did it all got it out switched out the wire and coiled it around a nail. attached it and put it all back k together and it was going fine. ... now it isn't , I think the coil slipped off the peg. any sage words of advice as I pull it all back off and start over?

Hey Larry I’m going to upload a picture of the panel. I removed the seats and removed all of the surface screws for this panel but it appears to be held in inside behind the armrest. I took a picture. I gave it a little bit of a tug but did not want to keep pulling. How do I get it off when it appears to be attached at the armrest?

sorry Larry looks like you laid it out for me on the link thank you

Thanks Larry. and thank you for the link. but which wire is it?

yeah. its the pilot end.... the bottle is intact....ugh. guess im gonna need a few hours on this one.

so I just had my oxygen knob fail today. the wire inside is presumed to be broken. it looks like I have to remove the entire PORT side plastic panel to get to the mechanism and that panel goes up ender the instrument panel and all the way back to the baggage compartment. I have a 94 Bravo TLS. any suggestion or advice?

Hummmm, I am following the JPI instructions to the letter.... so I will video it tomorrow. I was reading some where in one of these blogs that the TIT should be 1600-1625 Max.... I must have misread.

Thi This is where I ended up.

Thank you. Flying today and gonna really try and figure this out. Will report back on my adventure.

Question for the group. I am trying to refine my leaning process because I feel like I don't have it quite right yet When Leaning ROP using a JPI 900 they tell you to Pre- lean. I am curious about other Bravo owners..... What TIT do you pre lean to? before starting your ROP leaning process?

Question: When Leaning ROP using a JPI 900 they tell you to Pre- lean. I am curious about other Bravo owners..... What TIT do you pre lean to? before starting your ROP leaning process?

They are forward. I am wonding if I am leaning ROP correctly. seems like I have got to go a long way in terms of GPM to get to 100 deg ROP. I am following the JPI 900 instructions . I tend to watch the deg ROP more than anything else while leaning. I wonder if I should switch to FF

Thats what I thought as well. I think I would have been fine if I just left it off