Engine hose type

[Jpravi8tor]

So my 20+ Year old hoses need replacing firewall forward, I count 7 hoses on my 75 m20F.

I have read the posts about various sources for replacement but as I’m a CB and have the ability to make my own hoses I’m curious 

what type hoses were originally used? Aeroquip 303,stratoflex 300 what say you gurus of Mooney?

[M20F]

What makes you think they need to be replaced? 

[Hank]

If you replace them, get the ones with the integral fire sleeve. It's not much more.

[Jpravi8tor]

Firesleeve I got which hoses are standard customary original…meh a hose is a hose

[Jpravi8tor]

On the other hand my hoses don’t suffer from ED and don’t leak

[jetdriven]

124J hoses from aircraft hose shop granite city IL.  

[KSMooniac]

I'm a frugal owner too... More like I'm choosy with where I spend my money, and I opted for Gee Bee's hoses with the integral firesleeve when I overhauled my engine. I continue to be very happy with them 7 years later.

Sent from my LM-V405 using Tapatalk

[RLCarter]

I rolled my own, store bought 303 hoses were just north of $1100, new 303 hose, fire sleeve, mandrels, fire sleeve dip and clamps was just south of $600. Seem to remember 11 hoses under the hood, took better part of a day to make the hoses over 2 days, had to let the fire sleeve dip dry.

[Guest]

10 hours ago, Jpravi8tor said:

So my 20+ Year old hoses need replacing firewall forward, I count 7 hoses on my 75 m20F.

I have read the posts about various sources for replacement but as I’m a CB and have the ability to make my own hoses I’m curious 

what type hoses were originally used? Aeroquip 303,stratoflex 300 what say you gurus of Mooney?

You do have an IPC right?  The part numbers are in there. For example item 3.  Stratoflex 111 straight ends, -8 diameter, D for aluminum-50 is 50” long.  The complete break down of the part numbers can be found in the Stratoflex manual.

Clarence

[Fly Boomer]

10 hours ago, jetdriven said:

124J hoses from aircraft hose shop granite city IL.

Not the greatest web site, but I'm sure they paid a bunch for it:
https://www.aerohoseshop.com/

[Jpravi8tor]

While true I have an IPC I somehow had forgotten the knowledge of reading the tea leaves of the IPC thanks to @M20doc for pointing me in the correct direction

[cliffy]

GEE-BEEs hoses are top of the line!  No doubt about that  but there are options

Orignal hoses were rubber and good for 5-7 years. They get very hard a stiff. Can crack open or flake from the inside. 

That's why better hoses were invented (like GEE-BEE supplies)

Have found many of the old style stiff as concrete when working on older Mooneys. Finding 20 year old hoses is common.

303 hoses are still legal (outside of the SB) to use but need changing regularly (5-7 years). 

Firesleeve (red) is easy to install and gives longer life to the 303 hoses 

Firesleeve is a misnomer in my mind. We (as civilian pilots without big old round motors) do have the worry of engine compartment fires anymore

but the firesleeve acts as a very good heat barrier to keep the 303 hose in good shape longer. Think of the radiant heat from the exhaust pipes on the oil cooler hoses.

This is something outside of "Preventive Maintenance" so an A&P needs to be involved.

Big question is how are you going to pressure check the new hoses after makeup?

Don't forget to look at the fuel pressue line behind you instrument panel!  Have found most of those as  original installed hoses They really need to be replaced with new hose

 

 

[jetdriven]

3 hours ago, Fly Boomer said:

Not the greatest web site, but I'm sure they paid a bunch for it:
https://www.aerohoseshop.com/

they're a call and order type place. But they're a lot cheaper than, for example, PHT in Tulsa.

[Jpravi8tor]

13 hours ago, M20Doc said:

You do have an IPC right?  The part numbers are in there. For example item 3.  Stratoflex 111 straight ends, -8 diameter, D for aluminum-50 is 50” long.  The complete break down of the part numbers can be found in the Stratoflex manual.

Clarence

I cant quite decipher these part numbers? the fuel hose is easy but the oil cooler hoses???

[Jpravi8tor]

11 hours ago, GEE-BEE AEROPRODUCTS said:

Read the service bulletin 

oil coolers must be tso type D

intergal Teflon is 25% smaller od than rubber assys and stainless steel fittings 

Which service bulletin?

[Guest]

1 hour ago, Jpravi8tor said:

Which service bulletin?

The Piper Cherokee series have an FAA AD on oil cooler transfer hoses.  Rubber hoses with a fire sleeve have an 8 year/2000 hour life.  Teflon hoses with fire sleeve have no life per the AD.  I know of no such SB or AD on Mooney airframes.

From the current IO-360 IPC, Lycoming lists both rubber as well as Teflon hoses being approved. See the foot notes at the bottom of the page

Clarence

[Guest]

2 hours ago, Jpravi8tor said:

I cant quite decipher these part numbers? the fuel hose is easy but the oil cooler hoses???

Item 47, Stratoflex 111 hose, F= fire sleeve, 417= straight ends, -6 is diameter, S = steel nuts, 0184= 18.4 inches long.  The rest are similar coding.  Look for the Stratoflex manual for descriptions

Clarence

[Guest]

33 minutes ago, GEE-BEE AEROPRODUCTS said:

Lycoming on the oil cooler hoses should be Teflon 

ask your I.a.

GB

His signature line says he is an IA.

Clarence

[Jpravi8tor]

but seriously the oil cooler hose part number is sf11503-8-0530 so what the hell is this hose?

 

[Guest]

Clearly the IPC number has dropped a 1 from the p/n should be 111 hose type.

The Parker 111 hose manual might be helpful.

https://www.parker.com/Literature/Stratoflex Products Division/SPD Literature Static Files/SPD Rubberhose_111.pdf

Clarence

[Jpravi8tor]

 Clarence, thank you for your continued interest. I have been studying the parker stratoflex manuals and still cant come up with a size for that hose (assuming the 530 is a size?)

Funny thing the lycoming ipc doesnt show oil cooler p/b's because its an airframe part

[Jpravi8tor]

they certainly arent sharing the info readily...here is the document i'm trying to find now

• SPECIFICATIONS: hose meets or exceeds the requirements of MIL-H-8794. See information bulletin IB-630 for TSO approvals.

[Mkruger2021]

As many here have pointed out...To fabricate your own hoses is beyond the scope of what is preventative maintenance as outlined in FAR Part 43. You MUST hold an A&P or repair certificate to fabricate hoses. Don't let your insurance company void your policy when you need it most!

[Guest]

5 hours ago, Mkruger2021 said:

As many here have pointed out...To fabricate your own hoses is beyond the scope of what is preventative maintenance as outlined in FAR Part 43. You MUST hold an A&P or repair certificate to fabricate hoses. Don't let your insurance company void your policy when you need it most!

Many of us do hold the required licence, and some just pretend to!

Clarence

[Guest]

6 hours ago, Jpravi8tor said:

 Clarence, thank you for your continued interest. I have been studying the parker stratoflex manuals and still cant come up with a size for that hose (assuming the 530 is a size?)

Funny thing the lycoming ipc doesnt show oil cooler p/b's because its an airframe part

I’m just going to guess as I don’t have an F model in the shop at the moment.  Stratoflex 111 hose with straight 300-8 fittings in each end, fire sleeve protection with end dip and stainless bands, 50-0/8” long and 53-0/8” long.  A picture of your current hoses may be helpful in figuring out what you’ve got.

Clarence