D7 Switch Installation with Reciprocating Operating Handle

This 8-minute video shows how to install the Chance D7 airbrake switch with a reciprocating pump-handle, on a pole. It shows how to unpack the switch, install it on a pole, and how to install the lever which operates the switch. See also Chance video “D7 Switch Installation” shows the installation of this switch, with a pipe for operation. (Courtesy Hubbell)