1999 dodge dakota rear hydro drum brakes
I replaced the brake booster and master cylinder chasing a spongy pedal going to the floor which didn't fix it. Did another diagnostics and found a hydraulic leak from the passenger side rear brake assembly. Mobile mechanic says it is a "seal" and will replace both sides and brake pads for $450. I've never changed drum brakes and a little intimidated tbh. But I feel like I can do this myself and save some $$. So, how do I fix the hydraulic brake fluid leak? Any good advice for first time drum brake changers? thank you.