Maintenance Inspections
Teledyne Continental Motors, Inc.
TM
7-3.8. Crankcase Inspection
Purpose
To verify the following:
•
Crankcase integrity
•
Crankcase hardware fasteners are torqued according to Appendix B
•
Crankcase is free of oil leaks, cracks, and mechanical damage
Frequency
During 100-hour or annual inspection
Procedure
1.
Inspect the exterior of the crankcase halves for cracks. Carefully inspect the entire
external surface of the crankcase using an inspection light and mirror.
a.
Cylinder deck (white/non-shaded = critical areas) cracks, regardless of size
require
immediate crankcase replacement
. Refer to the affected white areas in
Figure 7-22.
Figure 7-22.
Crankcase Critical (White) and Non-Critical (Shaded) Areas
b.
Repair cracks one inch (2.54 cm) or longer in the shaded (non-critical) locations
of Figure 7-22. Replace the crankcase if satisfactory repair cannot be made.
7-36
IOF-240 Series Engine Maintenance Manual
Change 1
31 August 2007