It has happened to me! (Dreaded Fan Sensor - Crumbling Hose!)

[NotBudule]

I'm sure @airline tech can answer that off the top of his head.

Ya think ???

I don't really care about the hose , I care about the wiring , I'm not sure the hose does anything to protect the wiring AFTER catastrophe, so I would just rather it pull apart easily somehow ...

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[got3fords]

Maybe instead of an "indestructible hose" , we need an "easily destructable" harness ? Someway it will unplug when it gets yanked on hard enough , bullet connectors or something of the sort...

Perhaps, but this is not avoiding a failure, just minimizing the damage.

 

[got3fords]

Wondering also if you could just chamfer/ round the edges of the “T” and replace hose with HD/silcone ?

I bet eliminating the ridge all together would work, providing the rotation would not be pulling on it too much.

 

[canyonslicker]

Ya think ???

I don't really care about the hose , I care about the wiring , I'm not sure the hose does anything to protect the wiring AFTER catastrophe, so I would just rather it pull apart easily somehow ...

Yeah the idea is a great one but I can foresee a lot of false failures, water intrusion etc. Just too many unintended headaches. Failure prevention is the best solution in my mind.

 

[Big Blue]

Ya think ???

I don't really care about the hose , I care about the wiring , I'm not sure the hose does anything to protect the wiring AFTER catastrophe, so I would just rather it pull apart easily somehow ...

I ment he can tell you how many wires. That was your question, wasn't it?

 

[NotBudule]

I ment he can tell you how many wires. That was your question, wasn't it?

Yes sir , I was referring to the fact that he probably even knows , off the top , the fuse number and schematic ref number, where as I struggle with , well , everything damn it !!!

 

[HeatXfer]

After reading all the posts here, seeing all the solutions the members have created, analyzing the mechanics involved and scrutinizing the oem configuration, I've come to the conclusion that airline tech's simple, fast and easy fix using a length of reinforced fuel line is the answer. There is very little drag on the plastic fan clutch electrical connection at the shaft, but parallel alignment between it and the clutch body is important (that's why the oem rubber hose has those particular bends to keep the alignment parellel), but I believe he solved that by rotating the plastic piece a few degrees CW allowing a simple "candy cane" shaped hose to be used.

I'm not saying the other solutions presented won't work or are bad, but AT's proves to be the simplest and it covers all the bases. It's the one I'll be using.

 

[NotBudule]

Yeah the idea is a great one but I can foresee a lot of false failures, water intrusion etc. Just too many unintended headaches. Failure prevention is the best solution in my mind.

Other than replace fan every so often (even then), how can it be prevented ?

I just don't like the idea of the harness getting pulled on like that ? , places where I can't even see , I'd rather have a break away of my choosing... if possible...

 

[NotBudule]

Perhaps, but this is not avoiding a failure, just minimizing the damage.

That's my goal , no yanky my wires , bad things can happen ...

 

[got3fords]

Could an imbalanced fan cause the failure? I am thinking something like a mud dauber has started to build a nest on a fan blade, throwing the fan slightly off balance. Causing undue stress on the bearing and/or sensor assembly.

 

[canyonslicker]

That's my goal , no yanky my wires , bad things can happen ...

I get it. It’s just what will you lose or cause with a break away? I suppose you could increase the wire size and add connector with smaller wire size at the fan module that will break away but you would need an anchor point to hold the larger wire in place. Be it a break away connector or smaller wire it will need an anchor point. Either way you lose the shock absorber effect of the hose. Maybe I’m missing something..

 

[NotBudule]

I get it. It’s just what will you lose or cause with a break away? I suppose you could increase the wire size and add connector with smaller wire size at the fan module that will break away but you would need an anchor point to hold the larger wire in place. Be it a break away connector or smaller wire it will need an anchor point. Either way you lose the shock absorber effect of the hose. Maybe I’m missing something..

Break away wouldn't occur unless hose has failed (or fan causing the hose to fail ) and module has spun past how ever much slack its allowed before it yanks it ...

 

[canyonslicker]

Break away wouldn't occur unless hose has failed (or fan causing the hose to fail ) and module has spun past how ever much slack its allowed before it yanks it ...

Ok so how do you propose we resolve the shock absorbing effect of the hose and integrate a break away function? Inquiring minds want to know..

 

[canyonslicker]

Ok so how do you propose we resolve the shock absorbing effect of the hose and integrate a break away function? Inquiring minds want to know..

BTW correctly identifying a problem is half of the solution, just saying..

 

[TJC]

Wondering also if you could just chamfer/ round the edges of the “T” and replace hose with HD/silcone ?

It crossed my mind, but I think it would make the top edge have an even smaller contact surface. both edges are sharp, but you can correct the stub side by building up a slope to the top. Not as easy of the outside edge but doable I suppose. The mating surfaces need to contoured and smooth. Any roughness will erode the interior of the hose as it flexes.

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