65 Chevy C10 rear drum brake woes. please help.

[Gumby83]

Originally Posted by grubsster

Hole should be one inch lower from the original position... not higher.

This is where i hit the conundrum, do i drill a hole 1 inch lower and ignore the install instructions for the streetbeast hydrobooster or do i go higher to follow the install instructions? the pedal is hard only 3-4 inches into its travel. So its unlike the issues with other fellas boosters that almost go to the floor. Going to try bleeding with this blue screw first and see if a combination of that and the new drums do the trick. That will be tomorrows adventure.

[Agv63]

Bleeding the brakes with engine shut off should still bleed correct at the rear with pushrod in original location. It works like manual brakes, Its when the booster is active when the pedal feel changes, then the location must change. If it bleeds thru but no brakes it could be that someting is limiting slave cyl travel, like those 2 ears on the backing plate to stop piston popping out. It could be those small pushrods that connects piston to shoe is on short side, Piston depth can vary from different suppliers. Orthe original drums is worn to such a point that normal thickness shoes is running out of travel to make contact, coming back to piston hitting those stoppers, to verify a long bolt can be used to make new pins but longer, cut head off ,and a slot cut in , lenght can be choosen where needed and another cut and a rounding be made on other side.

Cheers.
Adriaan.