"C" Series With Transmission-Mounted Parking Brake

Remove clevis pin from lever assembly. Apply parking brake pedal 18 degrees. Insert a .125" (3 mm) pin into locating hole in pedal assembly. Push pedal downward until pin contacts parking brake bracket outer flange.
Using small length of cable or chain and a turnbuckle, install Spring Scale (J-35999) between lever assembly and vehicle frame. See Fig 1. Tighten turnbuckle until spring scale indicates 50 lbs. (22.7 kg).
Loosen clevis nut (at cable end). Turn clevis until clevis pin slides freely into lever assembly with all slack removed from cable. Install clevis pin and retain with a cotter pin. Tighten clevis nut. Remove spring scale. Remove pin from pedal assembly. Release parking brake. Ensure drum rotates freely.

Fig 1: Installing Spring Scale On Transmission-Mounted Parking Brake Assembly ("C" Series)

Courtesy of GENERAL MOTORS CORP.