Non-Overhaul Removal and Replacement
Teledyne Continental Motors, Inc.
TM
10-100
IOF-550 Permold Series Engine Maintenance Manual
1 April 2007
Any crack in the cylinder deck (white/non-shaded - critical areas) requires immediate
crankcase replacement. Refer to the affected white areas in Figure 10-76.
Any crack that is 1-inch (2.54 cm) or more in length in the shaded (non-critical) locations
in Figure 10-76 requires repair or replacement of the crankcase.
Scribe cracks smaller than 1 inch in the non-critical areas at the extremities for further
growth progression monitoring. Any crack with seeping oil must be repaired or replaced
immediately. At 25-hour inspection intervals, inspect the progression of any previously
identified crack located in the shaded locations of Figure 10-76 that is less than 1 inch in
length. If the crack progresses to 1 inch or more in length in the shaded locations of
Figure 10-76, repair or replace the crankcase.
10-9.1.1. Crankcase Weld Repairs
WARNING
An FAA-approved repair facility is the only facility authorized
to perform a crankcase weld repair.
No weld repairs are to be done on the critical (non-shaded)
areas of the crankcase (Figure 10-76) or the bearing support
structures.
Figure 10-76.
Crankcase Critical (Non-Shaded) and Non-Critical (Shaded) Areas
10-9.2. Crankcase Leak Correction
Replace leaking crankcase gaskets.
