Standard Practices
Teledyne Continental Motors, Inc.
TM
C-20
IOF-240 Series Engine Maintenance Manual
29 November 2006
C-10.
Gasket Installation
WARNING
The use of any form of silicone RTV or other non-TCM
approved sealant during reassembly of the engine may cause a
loss of through-bolt torque that will result in loss of main
bearing crush and fretting of the crankcase parting surfaces.
Fretting of the crankcase parting surfaces promotes main
bearing movement that can cause oil starvation to the
connecting rod journals and crankshaft journals leading to
subsequent engine failure.
Install only new gaskets. Prior to installation, inspect each gasket for brittleness, cracks,
wrinkles, damage, or deformities. Do not use a gasket with obvious defects, even if new;
replace with a new manufacturer-specified gasket. Verify the gasket surfaces are clean
and free of nicks, burrs, oil, and grit.
WARNING
Gaskets and components must be properly positioned with the
hardware torqued and safety wired, as required, during
assembly to prevent oil loss.
CAUTION: Do not install brittle, dirty, cracked, or wrinkled
gaskets. Never reuse a gasket removed during disassembly.
Procedure
1.
Apply a thin coat of TCM Gasket Sealant (TCM part number 642188) to both sides of
the gasket unless otherwise specified.
2.
Install the gasket, following the contour of the mating surface.
3.
Install the assembly and evenly torque the hardware according to instructions in
Appendix B to prevent over-stressing the gasket.
4.
Safety wire the hardware where indicated.
