[KLF]

Does your e-brake work? Do you use it?

Setting the e-brake every time you park is what keeps the rear brakes properly adjusted. What I used to do back in the days when I had prehistoric drum brakes on my truck was get them close, then after getting everything put back together, get it the truck and yank on the e-brake handle about 15-20 times.

Pumping the brakes is usually an indication that there is something out of adjustment, usually the rear shoes.

But, another thing that can happen is if there is excessive runout on a front wheel bearing, this will cause the rotor to "wobble" as the wheel spins, which will open up the caliper. You then have to pump the brakes a couple of times to get them to clamp down. After you drive a few minutes, it opens back up again, so the process repeats.