Oil cooler hoses

[nels]

Any body ever replace their oil cooler hydraulic lines? Would like to know what to expect on cost of the two hoses and labor. This is for a 66 E model.

[kortopates]

Call Precision Hose Technology with your hose part numbers and you will know precisely.

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[bonal]

Replaced both of mine to the front mounted cooler a couple annuals ago. I can't recal the cost for the hoses but the labor was super easy and fast perhaps a half hour.

[RobertGary1]

No need for labor. Pre-fab'd authorized hoses are an owner job. Most hose shops tso their hoses. Lycoming recommends removing the spark plugs and cranking until oil pressure is seen afterwards. Easy job, just don't mix the hoses. 

Ref:#22 of preventative maintenance authorized for owner/pilots. 

-Robert

[Guest]

I'm not sure I can agree with cranking any engine until oil pressure is achieved.  Camshafts and lifter faces are lubricated by excess oil being thrown from the crankshaft.  

Once the new oil cooler hoses are installed, start the engine, establish oil pressure and let the the engine run.  The oil cooler hoses and the cooler will fill up on their own.

Clarence

[nels]

I didn't know I could have changed those hoses myself. That is nice to know.

I'm trying to get an idea of what hoses cost to have made now. Under an hour labor is part of what I was looking for. The job was completed already but I thought the price was high and looking for real world numbers just to confirm my thoughts.

[nels]

While I'm asking cost experience, what about changing the alternator belt, the prop does need to be pulled and reinstalled.

[Guest]

I didn't know I could have changed those hoses myself. That is nice to know.

I'm trying to get an idea of what hoses cost to have made now. Under an hour labor is part of what I was looking for. The job was completed already but I thought the price was high and looking for real world numbers just to confirm my thoughts.

I think if you check with Precision Hose Technology you'll find that those hoses with a fire sleeve would be worth around 150 each, if you want them in Teflon with fire sleeve even more.  I seriously doubt you could get it done in an hour. 

As for your alternator belt 2-2 1/2 hours would be in order.

Clarence

 

[bonal]

If your old belt is still serviceable be sure to pull it back through the engine hoist brackets and zip tie it then you have a field spare if needed. When we replaced both the cooler hoses I know it took less than an hour I did the work myself it was easy

[nels]

If your old belt is still serviceable be sure to pull it back through the engine hoist brackets and zip tie it then you have a field spare if needed. When we replaced both the cooler hoses I know it took less than an hour I did the work myself it was easy

Now that would have been a great idea except the job was already completed!

[M20F]

If your old belt is still serviceable be sure to pull it back through the engine hoist brackets and zip tie it then you have a field spare if needed. When we replaced both the cooler hoses I know it took less than an hour I did the work myself it was easy

My experience has been that if the one on the prop rots off or breaks the spare isn't in any better.  You can also have an issue if for whatever reason the spare gets loose.  

Belts are cheap so it should be easy enough to inspect and replace as needed to prevent the issue of it breaking in the first place. 

[nels]

I thought they were cheap also until I had mine replaced. That's what this topic is about. I'm trying to figure out if I'm cheap or I'm just missing something.

[mike_elliott]

No need for labor. Pre-fab'd authorized hoses are an owner job. Most hose shops tso their hoses. Lycoming recommends removing the spark plugs and cranking until oil pressure is seen afterwards. Easy job, just don't mix the hoses. 

Ref:#22 of preventative maintenance authorized for owner/pilots. 

-Robert

I thought hydraulic hoses were off limits to us low life owners...

[mike_elliott]

My experience has been that if the one on the prop rots off or breaks the spare isn't in any better.  You can also have an issue if for whatever reason the spare gets loose.  

Belts are cheap so it should be easy enough to inspect and replace as needed to prevent the issue of it breaking in the first place. 

Correct, the spare isn't much better, but it can get you to a place you are not AOG, where you can manage the new replacement. Very cheap insurance to change every time the prop comes off and zip tie the old to the top of the engine in case of an emergency.

[Yetti]

Or you can carry one of these for you and your friends who may need one.   http://www.rockler.com/1-2-power-twist-plus-link-v-belt?utm_source=google&utm_medium=cpc&utm_term=&utm_content=pla&utm_campaign=PL&sid=V9146&gclid=Cj0KEQjwms-vBRDlsM7utpaJ47ABEiQAIpKjTBbPO-hxwmVx8KJbLJYP3PRTeYbrxRglGcJrqJFh-ngaAmK78P8HAQ

 

Yes prop off to change. Takes about 30 minutes to take off.  safety tieing the prop is should we say is intricate.   I was going to make a tool for torquing the bolts for my A&P that did mine.

 

[bonal]

Belts can fail for lots of reasons my spare still looks to be in great shape. Having this spare can get me home with a few simple tools. Some of the places I fly into there isn't any one around to help. You should see all the stuff I carry around just in case.

[nels]

I thought hydraulic hoses were off limits to us low life owners...

I think these would not be considered hydraulic hoses but rather oil hoses, much lower pressure? 

[DonMuncy]

I thought, by definition, hydraulics involved mechanical work by pressure of a fluid. These hoses we are discussing carry oil for lubrication and cooling. This is off the top of my head. I have not looked up the actual definitions. 

[jetdriven]

I think if you check with Precision Hose Technology you'll find that those hoses with a fire sleeve would be worth around 150 each, if you want them in Teflon with fire sleeve even more.  I seriously doubt you could get it done in an hour. 

As for your alternator belt 2-2 1/2 hours would be in order.

Clarence

 

I'd bet you could get them in 124J at PHT for 125$ each.  

 

Warm that thing up for 3-4 minutes then change the hoses and start it up.  No dry cam cranking without spark plugs. 

[RLCarter]

Ever consider just making them yourself? Just did my 65 E oil cooler lines, not that hard to make.

[Guest]

Ever consider just making them yourself? Just did my 65 E oil cooler lines, not that hard to make.

You can indeed buy the ends if your old ones no good and bulk hose to make your own.  You will need the correct mandrel and a way to pressure test them once you've built them.

Clarence

[1964-M20E]

I agree with Don the oil cooler hoses are not hydraulic lines.  Brakes and flaps yes oil lines I believe fall under the hose definition. IMHO  The regs even allow for prefabricated fuel lines to be replace by the owner.

 

Just make sure you tighten them correctly and that the natural spring of the hose does not want to loosen the connections.  I had that happen to me and caused a messy oil leak.  It was the previous MX or owner that worked on eh hose.

 

 

[mike_elliott]

I agree with Don the oil cooler hoses are not hydraulic lines.  Brakes and flaps yes oil lines I believe fall under the hose definition. IMHO  The regs even allow for prefabricated fuel lines to be replace by the owner.

 

Just make sure you tighten them correctly and that the natural spring of the hose does not want to loosen the connections.  I had that happen to me and caused a messy oil leak.  It was the previous MX or owner that worked on eh hose.

 

 

It might be hard to sell if your violated, unless one can prove 60 psi is not pressure or oil is not a liquid

hy·drau·lic

hīˈdrôlik/ 

adjective

adjective: hydraulic

1. 1.

   denoting, relating to, or operated by a liquid moving in a confined space under pressure.

   "hydraulic fluid"
2. 2.

   of or relating to the science of hydraulics.

[nels]

 

I don't think the oil cooler lines are under pressure. I think the oil is just being pumped through the cooler and dumped back into the crankcase. I would think fuel lines are a higher pressure than the oil cooler lines since they are metered at the end and those are allowed to be changed by the owner.

 

 

Edited September 14, 2015 by nels

[nels]

I'm surprised no one has asked how much the charge was to replace the two lines and put on a new alternator belt. Thanks to the replies so far I think my suspicions are correct. My estimates are: $100 for the belt and $300 for the two  oil cooler hoses.  They did take off my oil cooler and I had them reinstall my old one.  I think the prop/ alternator belt is 2 1/2 hrs, the oil lines and oil cooler together is 2 hrs. Total time is 4 1/2 hrs. The shop bill is $1200 which I have not paid as of yet. Subtract the parts at $400 from the $1200 bill leaves $800 for labor. $800/4.5 hrs is about $175/hr. So, is that out of line?