Pontiac With H.D. Brakes, Exc. Tempest (1965-68)
These brakes have adjustable anchor pin. Pin is adjusted by turning, as necessary. Brake shoe clearance is measured by inserting feeler gauge between secondary lining and drum (insert through slot in drum). If drum does not have slot, substitute with slotted type. Proper clearance is.010-.020". Recheck clearance after making any large adjustment in star wheel or anchor pin.
NOTE:
When making clearance measurement, ensure primary shoe is against drum.
Torque anchor pin lock nut to 60-90 ft. lbs.