This is a really SMALL thing. But,

 

If I remember correctly, quite a bit ago before the NGX service packs, I used to look at the wing with the spoilers up, and extend the flaps, and I could see the hydralic fluid flow through the pipes.

 

But now the tube is ALWAYS green. Nothing.

 

Is this normal? Just curious.

 

Again, just a small thing.

This is a really SMALL thing. But,

 

If I remember correctly, quite a bit ago before the NGX service packs, I used to look at the wing with the spoilers up, and extend the flaps, and I could see the hydralic fluid flow through the pipes.

 

But now the tube is ALWAYS green. Nothing.

 

Is this normal? Just curious.

 

Again, just a small thing.

 

To see hydraulic fluid moving through the lines, you'd have to have x-ray vision! The hydraulic fluid on an actual aircraft is primarily carried through metal pipes with flexible lines at actuators being made of thick neoprene coved by a heavy woven steel braid.

 

I've never seen a transparent hydraulic line before. The lines have to withstand pressures of 3000 p.s.i. which would be incompatible with typical transparent materials (i.e. plastic or nylon)

 

Might have been a texture artifact of some sort.

 

 

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Plus the fluid itself is a reddish color, not green.

Disregard my post.

Jim... I think you're being a bit too literal...

 

I remember a poster awhile ago said there was a way to see the HYD fluid moving via the SYS page and looking at the HYD QTY (or something similar...) I do not recall the setup myself.

What is that big tube of green that you see when you lift the spoilers?

 

Maybe I don't know my b737 that well..

That is the jack screw that moves the flaps. Up the spoilers and then set flaps to 30 and watch it spin.

Well than why is this on the PMDG 737NGX product page?

 

Raise the wing spoilers and watch as the virtual hydraulic fluid moves through the system and causes the pressure and quantity to change in real time

You will need to ask PMDG that. I was just telling you what the green tube was.

Well than why is this on the PMDG 737NGX product page?

 

They are probably referencing the hydraulic pressure page on the lower eicas screen.

They are probably referencing the hydraulic pressure page on the lower eicas screen.

 

Than they wouldn't of added in the "Raise the wing spoilers to watch the"

 

 

Than they wouldn't of added in the "Raise the wing spoilers to watch the"

What they mean is watch hydraulic pressure page on the lower eicas screen as Alex posted as you move the spoilers up and down. <sigh>

What they mean is watch hydraulic pressure page on the lower eicas screen as Alex posted as you move the spoilers up and down. <sigh>

 

Why would they be refering to the eicas at all!? They *clearly* hint to *watch* as it moves through the *system*. Not watch it on the *screen*

 

I'm sorry but it just dosen't make sense to me.

 

Maybe tabs can come prove me completely wrong.

Yes I am pretty sure they mean watch the hydraulic pressure and level change as the flaps etc move.

I'm on the ramp every day and I have yet to see a transparent hydraulic tube in the 737 or any airliner, some of the 737's have their flaps lowered at the gate due to de-icing reasons so its neat to see the intricate mechanisms.