81-06-17 Rear Parking Brake Cables
TSB to replace the rear parking brake cables on 1980 & '81 F-Series and Broncos.
Also, note that there's a later TSB (98-5A-35) which addresses routing the cables as improper routing can cause them to bind and not release. See that TSB in Steve83's information.
Also, note that there's a later TSB (98-5A-35) which addresses routing the cables as improper routing can cause them to bind and not release. See that TSB in Steve83's information.