Hello, I think I need some input or knowledge help with the brake problem on my Imperial.
1973 Imperial, New Raybestos pads and shoes, rebuilt and restored booster, new master cylinder, then back to the original master, new rear wheel cylinders, new flex lines front rear, all new brake hardware in drums, new NOS calipers.
I have had a hard pedal with slow stop since I brought Tux home. I pulled the booster and had it rebuilt, it failed booster test with vacuum and had plenty of old brake fluid crystallized inside. Also had booster replated.
Installed booster but bad winter, held off on road test till April. Once road tested I still had a hard pedal, so I thought it might be a faulty new offshore master cylinder I had installed with booster. replaced with good working Chrysler master from Imperial.
Still hard slow stopping.
Replaced front calipers that I rebuilt earlier with NOS calipers, I was thinking maybe my old calipers were hanging up.
Still hard pedal and slow stop.
I replaced the pads and shoes with new wheel cylinders and all drum hardware.
Same feel, this time I feel the pads grabbing better, car stops straight as it always has, but it is still a hard pedal slow stop. While sitting at a light waiting for change, the pedal almost feels as if its starting to push back.
I took Imperial out for a 40 min drive on two lane, urban main and side streets.
As I was on the return run I could feel pulsing brake grab on side streets. Not enough to stop the car, but enough to create a pulse slowing pulse in the car. This is new, but may be because new pads and shoes grab better the the asbestos.
Could this be the combination/proportioning valve?
Could the metering valve be stuck?
I have not had this problem before, all the cars I have done over the years, I have had symptoms like this but it was booster, seized calipers, etc...
Running out of time for the big Carlisle drive.
Extra input. Brakes get harder after first few stops, hard from start. I have been bleeding brakes with hose into jug of brake fluid with steading push of pedal until no air and pedal hard.
Thinking I might try another master.
Thanks.
1973 Imperial, New Raybestos pads and shoes, rebuilt and restored booster, new master cylinder, then back to the original master, new rear wheel cylinders, new flex lines front rear, all new brake hardware in drums, new NOS calipers.
I have had a hard pedal with slow stop since I brought Tux home. I pulled the booster and had it rebuilt, it failed booster test with vacuum and had plenty of old brake fluid crystallized inside. Also had booster replated.
Installed booster but bad winter, held off on road test till April. Once road tested I still had a hard pedal, so I thought it might be a faulty new offshore master cylinder I had installed with booster. replaced with good working Chrysler master from Imperial.
Still hard slow stopping.
Replaced front calipers that I rebuilt earlier with NOS calipers, I was thinking maybe my old calipers were hanging up.
Still hard pedal and slow stop.
I replaced the pads and shoes with new wheel cylinders and all drum hardware.
Same feel, this time I feel the pads grabbing better, car stops straight as it always has, but it is still a hard pedal slow stop. While sitting at a light waiting for change, the pedal almost feels as if its starting to push back.
I took Imperial out for a 40 min drive on two lane, urban main and side streets.
As I was on the return run I could feel pulsing brake grab on side streets. Not enough to stop the car, but enough to create a pulse slowing pulse in the car. This is new, but may be because new pads and shoes grab better the the asbestos.
Could this be the combination/proportioning valve?
Could the metering valve be stuck?
I have not had this problem before, all the cars I have done over the years, I have had symptoms like this but it was booster, seized calipers, etc...
Running out of time for the big Carlisle drive.
Extra input. Brakes get harder after first few stops, hard from start. I have been bleeding brakes with hose into jug of brake fluid with steading push of pedal until no air and pedal hard.
Thinking I might try another master.
Thanks.
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