Stopping Engine; Trouble Shooting - Continental Motors GTSIO-520 SERIES Operator's Manual

7. STOPPING ENGINE
a.
If auxiliary pump has been on in landing, turn to "OFF".
b. Run the engine at idle for 2 to 3 minutes to allow the
turbochargers to cool off and slow down. The units will generally
spin from 1 to 2 minutes after the engines have stopped. If the
engines are stopped too soon, and the turbochargers are still turning
at high speed, the shaft bearings will become starved for lubrication
and cause coking within turbine housing.
c. Place mixture control in "IDLE CUT-OFF".
d. Then turn all switches "OFF".
WARNING ... Do not turn the propeller while the
ignition switch is in the "BOTH", "LEFT" or "RIGHT"
position, because this could start the engine ahd cause
injury. Do not turn the propeller of a hot engine, even
though the ignition switch is in the "OFF" position,
because the engine could "KICK" as the result of
auto-ignition of a small amount of fuel remaining in the
engine.
TROUBLE SHOOTING
The trouble shooting chart which follows discusses symptoms which
can be diagnosed and interprets the results in terms of probable
causes and the appropriate corrective action to be taken.
For additional information on more specific trouble shooting
procedures, refer to Maintenance and Overhaul Manual.
All maintenance should be performed by a qualified mechanic. Any
attempt by unqualified personnel to adjust, repair or replace any
parts, may result in damage to the engine.
WARNING ... Operation of a defective engine without a
preliminary examination can cause further damage to a
disabled component and possible injury to personnel. By
careful inspection and trouble shooting such damage and
injury can be avoided and, in addition, the causes of faulty
operation can be determined without extensive
disassembly.
22