Valve Spring Compressor - TP687

Valve Spring Compressor - TP687
P/N: TP687
Product Code: TOO170C
Certificate Type: Certificate of Conformity (CoC)
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VALVE SPRING COMPRESSOR – TP687
Specialized aircraft engine maintenance tool designed to compress valve springs on Lycoming horizontally opposed aircraft engines, allowing safe removal and installation of valve keepers (collets) without removing the cylinder head. Used during valve service operations such as valve seal replacement, inspection, and top-end engine maintenance. Typically made from lightweight cast aluminum for direct fit on rocker shaft assemblies, providing controlled mechanical leverage in confined engine bay spaces.
Application: Aircraft piston engine maintenance, valve spring removal/installation, Lycoming engine overhaul and cylinder top-end servicing
Function: Mechanically compresses valve springs to release and reinstall valve keepers, enabling servicing of valve assemblies without cylinder head removal
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