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- 3,957
- Location
- Near Heathrow.
So after changing the diaphragm valve last week on the Green P38, is now making a strange squeak after it dumps air out the EAS exhaust !! It's easy to hear becasue my EAS has had the silencer removed for years (mainly becasue it makes pedestrians jump), and I can hear how often the pump switches on & off.
I get two distinct noises:
1) 1-2 second squeak similar to a pulley bearing when the pump stops & the gallery gets vented.
2) Asthmatic wheezing when the block is doing its tickety-tick and adjusting up & down.
This is new one on me. Never heard it before on any of the valve blocks I've refurbished !!
I get two distinct noises:
1) 1-2 second squeak similar to a pulley bearing when the pump stops & the gallery gets vented.
2) Asthmatic wheezing when the block is doing its tickety-tick and adjusting up & down.
This is new one on me. Never heard it before on any of the valve blocks I've refurbished !!
