Mechanical sounds: Listen & Download Mechanical sounds .mp3 Error! Change your browser, please! ⇓ Download Mechanical sounds ⚠ Hydraulic mechanism, off, on ⚠ Drawbridge, lower chains ⚠ Hand winch ⚠ Drawbridge raise chains ⚠ Chain hoist, Chain ⚠ Bicycle hand pump ⚠ Kick the bike speed switch ⚠ Small hydraulic gear ⚠ Foot pump inflating a mattress ⚠ ★★★★★