the brake proportion valve/block? If that’s what it’s called. Does a blurry photo help? is there anyway to clean out or soak these? Any products to recommend or to steer clear of? Thoughts? Feelings? Insults?
Yeah. Let's trade insults. That sounds like fun, on a weekend night. I'm as low as I can get. Therefore, not insultable. What you show there looks like an ordinary junction block used to channel fluid to all wheels. If that's on your Pontiac, it doesen't have a proportioning valve. They only apply to dual brake systems
Pull it, disassemble it to its components. Remove but keep track of any o-rings, and clean the parts using fresh, clean brake fluid, then a final cleaning with brake cleaner. Do the best you can with a piece of crocus cloth on a dowel or other suitable round piece and hand-cut a cross-hatch into the bore, again using clean brake fluid, then brake cleaner. Source and install new o-rings and reassemble using clean brake fluid, then reinstall and bleed.
Yeah, dark, blurry, out of focus photos with absolutely no info on year, make, model, or type of brake system is a GREAT way to get useful info... In any case, that's not a proportioning valve, it's a simple distribution block with no internal parts. Apparently you have an older vehicle with a a single circuit, four wheel drum brake system?
You nailed it! See! You didn’t need all that other useless info! 54 Pontiac. All drum brakes. So... just the usual brake cleaner then? Would soaking it in carb cleaner work or is that over board?
It's just a machined brass block with drilled holes. Clean it any way you want. There's nothing in it to be damaged.
