Next, position the valve spring compressor and compress the spring and retainer assembly until the keepers can be removed. A magnet or an awl often simplifies keeper removal, but use care not to ...

Proform's new Pneumatic Valve Spring Compressor can cut cylinder head disassembly time in half. Pulling the tool's trigger supplies up to 350 pounds of force using 125-psi air-compressor pressure ...

01. Using a spring compressor, we removed the old springs, retainer, and locks. A small magnet made grabbing the locks easier.

Airborne Flying Services of Hot Springs, Ark., developed and now offers the Valve Wizard, a set of three valve spring compressor tools for Lycoming O-235, O-290, IO/O-320, IO/O-360, AEIO-360, O ...