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. (It will operate with as little as 100 psi.)
With the valve spring compressed, its keepers and retainer can be easily removed. Depressing the tool’s pressure-release button retracts the piston, setting the spring free.