Normally they're adjusted so the piston returns to it's full retracted position, with little or no free play. It really isn't too critical. If your brakes don't drag, it's probably just fine.

Back in the 1950 chevy days, it was a critical adjustment as parts varied greatly.

What you're describing could be caused by warped rotors or bad wheel bearings in the front, especially if brake failure follows aggressive steering.

I'm telling ya, you have something seriously wrong with the hardware somewhere.

If the trouble isn't obvious, you might try blocking off the front and rear circuits, one at a time, and seeing if your pedal comes up as it should. .

 

I beat myself up many times for this very problem. Your description of your issue is air in the lines. I'm 99.9% certain of it. I thought my lines were void of air, and I was completely wrong. You don't know it until you use the reservoir system.

I cannot stress enough that I dealt with what you guys are talking about time and time again, until I made up that bleeding reservoir that was mentioned in the other thread about this very issue (one of a thousand threads on this issue)

As soon as I used the reservoir, all of my braking woes were gone. Firm pedal, excellent stopping power..... great working brakes.

Air in the rear lines was the culprit, in both of my CTD dodges and I've finally licked the monster.


T.

 

I've got a 92 W250 with the 12valve and I'm trying to find the complete vaccum routing diagram. Of someone could help me out I'd appreciate it.

 

I do not have a 92 manual, but my 1991 manual does not show the diesel vacuum routing diagram, only the gasser one. The supplemental manual does not have it either.

Does your truck still have the emission label under the hood? It should be on there.

 

It doesn't take 40 yrs of wrenchin to know there is something wrong with your system. Listen to the man's advice.

 

Check the plastic fitting that plugs into the booster that the vacuum hose
connects to. I've seen them crack and hard to see visually.