Lycoming TEO-540-C1A Maintenance Manual page 282

B. Make sure all connections in the exhaust system at the turbocharger V-band couplings
(Figure 1) are tight and do not have air leaks. Examine the tightness of the V-band coupling
on the turbocharger by inserting a screwdriver in the space made by the hinged latch of the
coupling. Try to turn the coupling using a force of approximately 20 ft.-lb. (27 Nm). If the
clamp does not turn, measure the torque of the self-locking clamp nut by tightening it to the
torque in the Special Torque Requirements Tables in Part 1, Section V in the latest revision
of the Service Table of Limits - SSP-1776. If the clamp turns, remove it, clean it, and
examine it for cracks or distortions. Re-use or replace the clamp as necessary.
Before installing the V-band coupling on the engine, carefully clean the coupling area of the
exhaust transition and mating flange on the turbine side of the turbocharger.
C. Repeat the previous step for the V-band couplings that attach the exhaust bypass valve
(Figure 1).
D. Examine all flexible hoses in the induction system for brittleness which can be evidence of
wear. Replace worn hoses. Make sure all connections in the induction system are tight and do
not have any leaks (Figure 2).
E. Examine the wastegate linkage for freedom of movement. Lubricate the shaft and linkage.
F. Look for dirt or carbon build-up on the outside of the turbocharger. Remove the build-up per
the turbocharger manufacturer's instructions. Identify and correct the cause.
G. Record all findings and any corrective action in the engine logbook and on the 50-Hour
Inspection Checklist.
72-40
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Figure 2
Rear Turbo Air Inlet Housing
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TEO-540-C1A Engine Maintenance Manual
TEO-540-C1A Engine Maintenance Manual
November 2018