Brake pedal
Riche
11-20-2006, 07:23 AM
1997 K1500 150000
All right, in order… front brake pads, rear wheel cylinders (leaking), rear shoes, Master cylinder and all new rubber hoses. And 2 pints of brake fluid!!!
The truck stops just fine with about a little more than half of brake pedal travel once you are stopped you can push the pedal to the floor.
The only things I have left to change are the power brake booster, abs or the front calipers. I am hesitating on the calipers b/c I was always under the impression that unless they are leaking or binding up they should be fine. But I am still thinking that they may have a problem b/c before I changed my rubber hoses I clamped them all off. Right at the metal lines and my pedal was rock hard with the truck off and running. Is there something in the abs that compensates for braking? Is this pedal normal? If it was the abs wouldn’t it still have the same problem with the lines clamped off? If I turn off the truck the pedal will not act like this it is solid. I have heard that you can disconnect the abs and if the problem goes away then it is something in the abs. I guess I want to know if that pedal is normal. I had another guy that bought one new and said he brought it back to the dealer b/c the pedal would almost go to the floor before it stopped and they said that was normal… Any input would not hurt me right now.:banghead:
Thanks
All right, in order… front brake pads, rear wheel cylinders (leaking), rear shoes, Master cylinder and all new rubber hoses. And 2 pints of brake fluid!!!
The truck stops just fine with about a little more than half of brake pedal travel once you are stopped you can push the pedal to the floor.
The only things I have left to change are the power brake booster, abs or the front calipers. I am hesitating on the calipers b/c I was always under the impression that unless they are leaking or binding up they should be fine. But I am still thinking that they may have a problem b/c before I changed my rubber hoses I clamped them all off. Right at the metal lines and my pedal was rock hard with the truck off and running. Is there something in the abs that compensates for braking? Is this pedal normal? If it was the abs wouldn’t it still have the same problem with the lines clamped off? If I turn off the truck the pedal will not act like this it is solid. I have heard that you can disconnect the abs and if the problem goes away then it is something in the abs. I guess I want to know if that pedal is normal. I had another guy that bought one new and said he brought it back to the dealer b/c the pedal would almost go to the floor before it stopped and they said that was normal… Any input would not hurt me right now.:banghead:
Thanks
GMMerlin
11-20-2006, 07:50 AM
You may have air in the hydraulic unit of the ABS. Sometimes performing a couple hard stops that activate ABS (gravel parking lots work good) will displace the air.
Does the pedal sink to the floor at a stop or can you push it to the floor, there is a difference.
Without feeling it for myself and measuring the pedal travel, its hard to say if your condition is normal or not.
Does the pedal sink to the floor at a stop or can you push it to the floor, there is a difference.
Without feeling it for myself and measuring the pedal travel, its hard to say if your condition is normal or not.
Riche
11-20-2006, 08:16 AM
"You may have air in the hydraulic unit of the ABS" this is a good point. My rear brake fluid was empty b/c of the leaking wheel cylinder. It is after I come to a stop I can push it to the floor. It doesn't sink. And I don't have to keep pushing it down to stay stopped. The pedal will go to the floor if it is pushed.
GMMerlin
11-20-2006, 09:13 AM
"You may have air in the hydraulic unit of the ABS" this is a good point. My rear brake fluid was empty b/c of the leaking wheel cylinder. It is after I come to a stop I can push it to the floor. It doesn't sink. And I don't have to keep pushing it down to stay stopped. The pedal will go to the floor if it is pushed.
Believe it or not, you can force the pedal to the floor if you keep pushing on it.
I would be more concerned if the pedal sank to the floor with little or no effort.
Believe it or not, you can force the pedal to the floor if you keep pushing on it.
I would be more concerned if the pedal sank to the floor with little or no effort.
Riche
11-20-2006, 10:50 AM
So then I guess my pedal is normal?? I have never driven an abs vehicle. So I could be making a problem were there isn't b/c I have no basis to compare to. Basically if I get out there and come to a hard stop, the abs kicks in and the pedal is not on the floor board then I am probably ok?? If I am not getting the sensation that my master cylinder is going out like a system leak.
Thanks for your advice Merlin I am by no means a mechanic but I am a pretty persistent jack-of-all-trades master-of-none.
Thanks for your advice Merlin I am by no means a mechanic but I am a pretty persistent jack-of-all-trades master-of-none.
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