JTECH Posted February 15, 2018 Share Posted February 15, 2018 I am looking for some help for an ongoing snag with a CC130H T56 , the snag only occurs during flight and during climbs. we get a 50-200 degree fluctuation in TIT with FF and TQ following. we have changed TD AMP, TD Valve, SS control, thermocouples and L/H and R/H harness, T-block harness and T-block, the snag is intermittent so hard to nail down. Anyone see this before I would appreciate any input. Thanks. Quote Link to comment Share on other sites More sharing options...
JTECH Posted February 15, 2018 Author Share Posted February 15, 2018 Do not be fooled by my name I am back on the old birds....and loving it. Quote Link to comment Share on other sites More sharing options...
HercMX Posted February 16, 2018 Share Posted February 16, 2018 Chk for loose sealing, hi press bleed valves Jack................ Quote Link to comment Share on other sites More sharing options...
pjvr99 Posted February 16, 2018 Share Posted February 16, 2018 you're not gonna like this, but look for bent tower shaft or bearing failure in adh Quote Link to comment Share on other sites More sharing options...
Lkuest Posted February 16, 2018 Share Posted February 16, 2018 Was RPM doing anything, and if so, which direction in relation to TIT? Also, were torque and TIT low together, or opposite each other? Quote Link to comment Share on other sites More sharing options...
JTECH Posted February 16, 2018 Author Share Posted February 16, 2018 fluctuation is together and when we select Null or Locked everything goes back to good and stable. We have been flight with a restriction. Quote Link to comment Share on other sites More sharing options...
Lkuest Posted February 21, 2018 Share Posted February 21, 2018 If TIT, Fuel Flow, and Torque are all low together with no change in RPM, whatever is causing the problem is definitely fuel related. Have you run an electrical check on all wiring? Some of the electricity goes through the LH engine wiring harness, and there is a J3 lead that can cause problems. You might also hook up the TD Amp test set and shake the wiring around to try to duplicate. You should also pull the lid off the junction box next to the TD Amp and see if anything looks out of place. Quote Link to comment Share on other sites More sharing options...
superbigbig Posted June 10, 2020 Share Posted June 10, 2020 再換溫度控制器試試 Quote Link to comment Share on other sites More sharing options...
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