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Posted

Curious if anyone here can recommend a hose shop. I was spoiled for so long having one in Sacramento. As near as I can tell there is only one now in California. I had them make a replacement fuel sensor hose (servo to firewall), fire sleeved for $120. Not a bad price but I'm going to slowly go through and replace the remaining fuel and oil hoses (both firewall forward and back, don't want oil dripping on my feet). I'm wondering if I can get a better price outside of CA. I'll be shipping them so distance isn't a big concern.

 

-Robert

Posted

During our last annual we replaced all the oil and fuel lines.  Varga Enterprises down here in Chandler, AZ did the work.  Give them a call and see if they can help you.  vargaair.com  Phone: (480) 963-6936.

Posted

An Alternative - I replaced all 4 of the oil lines in the "C" last fall. I reused the AN fittings, bought correct hose and the mandrel tooling from Spruce and made my own. What a lot of work, especially the smaller diameter lines to the pressure gauge were a PITA.

Posted

Alternative - I replaced all 4 of the oil lines in the "C" last fall. I reused the AN fittings, bought correct hose and the mandrel tooling from Spruce and made my own. What a lot of work, especially the smaller diameter lines to the pressure gauge were a PITA.

We did the same thing a few years ago. It cost around $140 to buy enough material to rebuild all 17 of the hoses. I also had to replace one of the ends due to corrosion.

Posted

Pht makes great hoses, and the 124j silicone hoses are actually cheaper in many cases than the crimp on fire sleeve kind. SpaceX uses them on rockets so j think they're ok for a Mooney.

Posted

PHT does not have the data for the inside the cabin hoses or so they said at the beginning of the year.  $1100 for all the hoses with the fancy brown silicone (like $100 more) which I have been told are good for life of the plane.  Father Yetti had the mandrels...  but I saved money in buying band aids.   Easier to drop the exhaust and with the mags off.

Posted

Just this past weekend I opened my Mooney up for its annual inspection, which starts next weekend. It took 10 hours spread out over two days just to open her up, by the way, but that was with me cleaning and inspecting things along the way much more than anyone for hire would have reasonably been expected to do.

A few years ago Byron, after seeing my engine compartment, recommended that I replace my aging fuel and oil hoses with integrally fire sleeved 124J silicone hoses from PHT. I did so at the next annual inspection.

The only surprise that I had this go around while opening her up was an exhaust leak on the number 3 riser that was not there 20 hours ago when I last changed the oil. I noticed the leak because the exhaust gases had slightly discolored one of the 124J hoses going to the fuel servo. Let's just say that I was glad that I had new, high quality fire sleeved hoses installed when this $7 part, the number 3 exhaust gasket, decided to let go.

Jim

Is there any guidance on what brand/type hoses should get fire sleeves?  My fuel and oil hoses got replaced after prebuy when I bought the plane last December.  But none have fire sleeves.  I suspect this is because I had no clue what a fire sleeve is at the time.  The hoses say "Stratoflex" on them.

Posted

PHT does not have the data for the inside the cabin hoses or so they said at the beginning of the year.  $1100 for all the hoses with the fancy brown silicone (like $100 more) which I have been told are good for life of the plane.  Father Yetti had the mandrels...  but I saved money in buying band aids.   Easier to drop the exhaust and with the mags off.

Guy Ginbey made that hose for me for 100$

Posted

Is there any guidance on what brand/type hoses should get fire sleeves? My fuel and oil hoses got replaced after prebuy when I bought the plane last December. But none have fire sleeves. I suspect this is because I had no clue what a fire sleeve is at the time. The hoses say "Stratoflex" on them.

If it looks like a black or stainless woven jacket it has no fire sleeve. I don't know the specifics of your model but I think all flammable fluid carrying hoses forward of the firewall ought to have a fire sleeve. Typically that's bright orange although the 124J hoses come in brown or blue. Aero quip also makes a similar hose in dark red.

Since yours are new, you can rent or borrow the tool and put the fire sleeve on t and band clamp it. The only bad thing is the data tag will be under the sleeve. A hose shop ought to be able to pressure test them and weld a new tag on.

  • Like 1
Posted

If it looks like a black or stainless woven jacket it has no fire sleeve. I don't know the specifics of your model but I think all flammable fluid carrying hoses forward of the firewall ought to have a fire sleeve. Typically that's bright orange although the 124J hoses come in brown or blue. Aero quip also makes a similar hose in dark red.

Since yours are new, you can rent or borrow the tool and put the fire sleeve on t and band clamp it. The only bad thing is the data tag will be under the sleeve. A hose shop ought to be able to pressure test them and weld a new tag on.

Thanks- they all simply have dense black woven jackets around them -  I will need the sleeves put on - will also look into the tag issue.  

Posted

Can you or your A&P crimp the stainless steel ends on?  Do you do the 3000 PSI pressure test to 100% of working pressure?

 

you have 7 hoses under the cowling. thats 14 hose ends. If any one of those comes loose or leaks, you either have an engine failure, a potential engine fire, or both. 

 

post-7887-0-71767800-1440640452_thumb.jp

Posted

Byron just hit the nail on the head.....How do you pressure test them....Two years ago , I bought a full set for an E model and I think it was 600.00  two oil , 3 fuel , and the two small ones for fuel and oil pressure , all fire sleeved...

Posted

I don't have a lot of fears but springing a big oil or fuel leak in flight is one. When I installed my engine after my plane sat for a couple years the fuel sensor line from the servo to the firewall leaked. And it was a pretty strong stream of fuel. Not a drip, a real stream. Imagine that on your passenger's foot coming from the line to the gauge, etc. I've had crimps fail after years of service so I'm not too upset about having a hose shop build my hoses.

 

-Robert

Posted

Byron, that picture is impressive seeing how much care you have taken. 

 

I guess I just don't understand the crimp comment.  When I purchased my airplane all the oil hoses and fuel lines used stratoflex fittings.  which I continued to use over the years when the hoses were replaced.  Those fittings don't get crimped on at all but one uses a mandrel to install the ends.  Also, the operating pressure of the system is approx. 100 pounds, not thousands. 

 

I don't want to start a typical mooneyspace argument, just trying to understand. 

Posted

I'm pretty sure the crimp comment was in regards to crimping the stainless bands that hold the fire sleeve to the hose.

I do agree with Byron that to be 100% official, the manufactured hose needs to be tested to rated pressure of the completed assembly, usually 3000 psi for standard Aeroquip 303 or stratoflex hoses.

I also know that for years, most shops would make/repair Aeroquip lines using the mandrel set and standard shop tools. The first IA that I worked for taught me how to make them. Testing procedures included inspecting them and then making sure they didn't leak. This was also back in the days when a lot of shops did engine overhauls on site. How many local shops do you see doing that anymore?

Anyway, I'm not really sure when that rationale changed, but it did.

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