52120 - Main Spring

Extension Spring 25 inches total length 24 inch inside of hook to inside of hook (see diagram) 19-7/8 body length 3-1/4 outside diameter .475 wire diameter 42 coils It is generally recommended that dock leveler main springs are replaced in pairs. Example: if the far-left spring is broken, replace the far-right spring, too. This ensures equalized lifting forces, and reduces premature wear.