Mechanical Dock Leveler Ask An Expert Request a Quote Request Service Or give us a call: 1-888-606-9415 Mechanical Dock Levelers are a simple, lower price point alternative to powered dock levelers. Mechanical levelers are a good option when power isn’t available at the loading dock or dock traffic volumes do not warrant the investment in more expensive powered dock levelers. They are operated by releasing tension from a set of springs underneath the dock top plate. Advancements in leveler design have created mechanical levelers that are easier to operate and more reliable than ever. Kelley’s CM series of mechanical dock levelers incorporate a number of unique features that differentiate them from their competitors, providing a longer life than other mechanical dock levelers on the market when properly maintained.