Piper Navajo Chieftain PA-31-350 Service Manual page 511

NAVAJO CHIEFTAIN SERVICE MANUAL
TABLE VIII-IV. TROUBLESHOOTING CHART (TURBOCHARGER) (cont)
Trouble
Cause
Remedy
Waste gate won't close
completely. (cont.)
Turbine won't come up
to speed.
Broken linkage.
Worn or coked bearings.
Repair linkage and adjust
waste gate to open or close
position to specifications
in overhaul manual.
Replace or overhaul turbo-
charger.
Damage to turbine or
compressor wheel.
Exhaust leaks.
Controller or waste gate
malfunction.
Replace or overhaul turbo-
charger.
Repair leaks.
Replace controller.
NOTE
When it has been determined that a controller is malfunctioning, it
should be removed and replaced. The old unit should be sent to
approved facilities for overhaul of turbochargers or repaired in
accordance with current Avco-Lycoming Overhaul Instructions
SSP266.
Reissued: 9/23/80
POWER PLANT
2J24