Both the shoes and the cable are adjustable. Here is the shoe adjustment procedure from the service manual.
Adjustment
(1) Remove the adjusting screw cover plate.
(2) Turn the brake shoe adjusting nut, as shown
in Figure 3, to decrease shoe-to-drum clearance until
a slight drag is felt on the drum. Back off the adjusting nut at least one full notch (using spanner
wrench Tool C-3723) or until brake drum is free.
Be sure the two raised shoulders on the adjusting
nut are seated in the grooves on the adjusting sleeve.
(3) Test the parking brake lever for travel. When
properly adjusted, there should not be more than 3*4
inches of parking brake pedal travel. Never substitute a brake shoe adjustment by adjusting the
cable.
(4) Install the adjusting screw cover plate.
On Tuesday, July 6, 2021 at 10:18:43 AM UTC-7 Tim wrote:
Hello Brain Trust
My parking brake in the 300G is barely holding the car...def not on any slope.
Is it adjustable? Easy fix? Diagnosis hints? Thx. Tim