pjvr99 Posted April 8, 2010 Share Posted April 8, 2010 APU came from overhaul, ran through test cell - all good. Installed on aircraft, bleed air on, but no load, there is a 5 - 10psi pressure surge, small EGT and RPM flux. When a load is applied (eg aircon pack), it stabilizes. Removed and sent to test cell, again nothing could be found. Installed on another aircraft, has the same problem. Replaced the load control valve, but still the same. Anyone have any ideas ...?? Quote Link to comment Share on other sites More sharing options...
MAXTORQ Posted April 8, 2010 Share Posted April 8, 2010 Was the same load control Tstat used while on test cell? Or was it removed to use the Tcells tstat? Quote Link to comment Share on other sites More sharing options...
pjvr99 Posted April 8, 2010 Author Share Posted April 8, 2010 Tstat = thermostat?? Didn't touch it. Load control EGT 620°C, acceleration 610°C Quote Link to comment Share on other sites More sharing options...
herky400M Posted May 3, 2010 Share Posted May 3, 2010 PJ, did you changed the probe in the exhaust? greetz bob Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.