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Metal in hydraulic filter...

 
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fougapilot



Joined: 20 Jul 2007
Posts: 80
Location: Flat on my back with minimum airspeed

PostPosted: Sun Feb 12, 2017 6:11 pm    Post subject: Metal in hydraulic filter... Reply with quote

Guys,

Doing the annual this weekend, we found a very small amount of metal in the hydraulic filter.

Although very small, the metal clearly reacts to the magnet.

It is the first time we find metal in the filter, has anyone else ever found some?

Thanks.

Dan


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Dawg



Joined: 19 May 2013
Posts: 352

PostPosted: Sun Feb 12, 2017 9:38 pm    Post subject: Metal in hydraulic filter... Reply with quote

At times you may find a small amount of "Fine" particulates in the filter.
There are no real moving parts in the fluid other than the pump. The valves just slide.
If you are concerned, (I wouldn't be) I would suggest putting the aircraft on jacks, blow the gear and flaps down, leave the emergency valves open and drain the emergency system. close the valves, then drain the reservoir. Check the screen in the tank filler opening for condition and metal. I've seen the screen disintegrate with age and over anxious funnel insertion. (Sounds nasty!) Add New fluid. Next year check it again.
Unless u fly 25 hours or more a year, once a year is plenty.

**** When blowing the flaps down, have someone stand by the wing section where the wing straps are and listen for noisy valves. It will be very loud. If you hear it, turn radio up louder until u can't hear noise anymore!

Bill

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Quote:
On Feb 13, 2017, at 11:11, fougapilot <fougapilot(at)hotmail.com> wrote:



Guys,

Doing the annual this weekend, we found a very small amount of metal in the hydraulic filter.

Although very small, the metal clearly reacts to the magnet.

It is the first time we find metal in the filter, has anyone else ever found some?

Thanks.

Dan




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