I was just watching your last video and this popped up! Love your videos, it's very cool to see what goes on behind the scenes to keep these magnificent aircraft airworthy. Thank you for sharing your fascinating job with the world!
Stig's right. Turbine oil's changed only in cases of gross contamination. The oil used in marine and power plant steam turbine's wilI go for years with proper straining, filtration, centrifuging and coalescing etc. Unlike diesels etc. it's not directly exposed to combustion products, which makes a big difference. The only reciprocating engines having that characteristic are the big marine crosshead engines which have no wrist pins, instead using a straight piston rod, like the old steam locomotives.
It’s also wild with Turbine oils, we get every Mfr. under the sun pay for testing to “approve” for use. Still today we work oil carts for older engines like the PW4000.
When we run TR Development we get Skydrol in 55gal. Drums. During NEO HCF testing, the overflow tank sprung a leak and I watched my operators boots melt on the test stand. 😂
I was doing a pre-departure walk-around on an Alaska MD-80 at LAS over a decade ago. It was raining and as I walked under the tail, I looked up and a drop of something hit my face near my eye and started burning like crazy. One of the maintenance guys said, “Ooh, Skydrol!” 😂
When did Skydrol start being used? At school 25 years ago I only ever learned about the red stuff for hydraulics. (Haven't worked on an aircraft since)
Skydrol has been used for decades. Would you’re talking about is also hydraulic fluid, it’s called 5606. That’s meant for more low pressure components, Skydrol is meant for high-pressure components ending up to 3000 to 5000 psi
Can you answer two questions for me, please? Can you tell me how often to change the hydraulic oil? Or just fill the reserve and when it detect contamination so drain the reserve, right? Could you please tell me how often the hydraulic sampling valve is maintained in the field (after how many hours) and what type of check it is (check A,…)?
Hydraulic fluid usually does not get changed, usually we’re just servicing it in case we find it low due to seepage. If we do have to change hydraulic fluid, it’s usually done because of contamination or if it’s a very heavy service check such as D check. Hydraulic sampling is done on periodic basis, most of the time on A checks and C checks or whenever the manufacturer calls for it.
@StigAviation yeah only reason I asked is I used to contract on a military base and we worked on fuel trucks and everything in between. Anything that had a diesel engine ran JP8. And I mean anything
