bjornebraten Posted February 16, 2017 Share Posted February 16, 2017 Have a box with a brake pipe from master cylinder connected. Some wires also. Box is mounted under dash. When i touch brake pedal , the knob moves . what is this? See pictures. Quote Link to comment Share on other sites More sharing options...
Administrators Moses Ludel Posted February 18, 2017 Administrators Share Posted February 18, 2017 Thomas, this is a hydraulically actuated trailer brake controller. Today, controllers are electronic, and most new trucks come pre-wired for an electronic controller. When your 1973 I-H 1210 was built, a brake controller was aftermarket installed. This type of hydraulic aftermarket unit was popular. The condition of this controller is likely questionable. It hooks into the braking system at one end of the dual master cylinder. The brake piping looks somewhat crude. This was either dealership or aftermarket owner/shop installed. Moses Quote Link to comment Share on other sites More sharing options...
bjornebraten Posted February 18, 2017 Author Share Posted February 18, 2017 i think i take it away. thanks Moses. Quote Link to comment Share on other sites More sharing options...
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