Saved a 79' 240d from the parts bin
It was due to be parted out by a mercedes mechanic who lives in gaston until he got into it and found a sticker on the valve cover indicating the engine had been rebuilt, then i saw it on craigslist and ended up buying it and the car-load of extra parts it came with in the hopes of daily driving it. Well the parts came with a purpose and she has a laundry list of little things that need done most of them before it can drive it safely and legally and reliably.The foremost being brakes which right now are garbage, the pads were rotted from age and the brake fluid looked like bog water. so I started with bleeding the brakes clean and putting new pads in, which was going well until I got to the front right caliper no matter how long I sat there bleeding it these little bubbles persisted in coming out through the hose. Now I had done the rear wheels first and there was a good amount of air in the lines but it did stop after a time. My dad who was helping me with this procedure suggested that my master cylinder may be damaged and taking on air in some way. That made sense so I looked into replacing/rebuilding it and I noticed none of the brake master cylinders came with a reservoir, which I thought was odd so I went to look for one of those and the cheapest one I found that looked new was $102. This seems absurd for a little plastic tank. So now I'm here saying hello and asking if this part is really that stupid expensive or did I miss something, as well as if there are any common failing points in the brakes that I should be checking while I'm at it (front calipers are ATE if that makes a difference)


