Teledyne Continental Motors, Inc.
TM
Maintenance
Inspections
Figure 7-8.
Normal Combustion
Chamber
Figure 7-9.
Burned Exhaust
Valve
Exhaust valve has reddish combustion deposit in center
with dark outer edge. Intake valve has light brown
combustion deposits. Combustion chamber has light
brown deposits
Note the edge of valve face has lost all combustion
residue with striations moving toward center of valve.
.
Figure 7-10.
Phosphate-Coated
Cylinder w/Revised Cylinder
Bore Hone Pattern
Figure 7-11.
Phosphated Cylinder
Bore
Note phosphate coating remaining in valleys of the
cylinder bore hone pattern. Light corrosion at top of
cylinder bore, above piston ring travel limit. Presence of
light corrosion in this area is normal.
Phosphate coating provides increased corrosion
protection during initial hours of engine operation
.
IOF-550 Permold Series Engine Maintenance Manual
7-27
1 April 2007