RE: {Chrysler 300} Brake Issue

Zach, the master cylinder pushrod must be adjusted properly so that the piston returns fully in the bore, uncovering the compensation port and allowing the fluid to return. Left covered the brakes stay applied little by little, the drag makes them hot, they expand, and the whole thing gets worse until it stops.

Another thing. masters used with drum brakes have a check valve in the master port to keep the shoes from fully retracting. You cannot use a check valve port on a disk brake as it will keep the brakes energized.

-----Original Message-----
From: "Zach Hietsch" <zhietsch@xxxxxxxxx>
Sent: Thursday, July 30, 2026 7:51pm
To: "Chrysler list server" <chrysler-300-club-international@xxxxxxxxxxxxxxxx>
Subject: {Chrysler 300} Brake Issue

Hello All,

Took my 300B out for the first time to a car show tonight since I got the car driving last year.

On my way home I encountered a brake issue. The pedal got really stiff(like I could only move it 1" without exerting alot of effort) and the car became sluggish under acceleration. When I got it in the garage at home a puff of white smoke came out of the right front and all four wheels were hot to the touch.

I have converted the car to front discs(I didn't throw anything away, relax) and I haven't encountered this issue before. I had a really good pedal on my 15min drive out to the show and then about 10 minutes on my way home.

I have never driven a car without boosted brakes so I am unsure if it's a booster/vacuum issue. Could it be that the push rod for the master isn't adjusted right and its not letting the brakes release fully. When I installed the master it seemed to go all the way back to where it needed to be.

Any insight would be greatly appreciated.

Thanks

Zach Hietsch

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