LM2500+ HP recoup pressure

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Thread Starter

wizzow

Gas turbine LM 2500+. After gas generator replacement we experience low HP recoup pressure, with current orifices installed P03. I would appreciate your comments about what eventually can cause this problem, damaged labyrinth seal of HPT rotor, etc. CDP of the GG is the same as the other engines, no indication that something is wrong there.

Thank you!
 
There are some few calculations that's goes into changing of that orifice and you can get that data sheet attached to your Troubleshooting manual
 
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