|10-21-2012 02:40 PM|
Booster was replaced and brakes work as they should.
I didn't know that new booster was already adjusted to spec and adjusted it to the one on the car.
Old one someone tried to "fix" by putting a piece of saran wrap to "seal" it off.
Some redneck ingenuity there...
|10-07-2012 08:44 PM|
|10-07-2012 08:42 PM|
|10-07-2012 08:11 PM|
|10-07-2012 07:28 PM|
He lives on a gravel road. Pushing pedal as hard as I could it didn't lock up brakes.
I pumped up brakes and then started the truck and pedal didn't move at all, which makes me believe booster is bad.
|10-07-2012 07:22 PM|
Is brake pedal effort high? Maybe th booster isnt your problem.
First thing to do is lift the truck, apply the brakes, and make sure both systems are working. If the combination valve is shuttled, one system wont be functioning. If the front system is shut off, you lose 60% of your braking system power.
Inferior brake pads can cause a low friction co efficient, causing a very diminished stopping power, even with ample pedal application pressure and assist from booster.
If you uhook the booster ( be sure to block vacuum hose so motor doesnt stall) and the pedal is much harder to push to obtain the same stopping distance from a set speed then the booster is obviously multiplying the effort applied to the pedal.A booster can hold vacuum and leak when brake is applied resulting in loss of assist, They can also hold vacuum and not apply any multiplication of force.
If you are pretty much applying brakes as hard as you can, and the truck takes forever to stop, it could be the pads are inferior.
If the booster is bad, you should still be able to stand on the brakes and make the wheels to skid. You might try that on a dirt road and have a friend watch to see that all 4 can be locked up.That is a good way to determine that all 4 are working.
|10-07-2012 07:04 PM|
|stea||Ive never seen a rebuild kit. A new booster should be less than $100|
|10-07-2012 11:24 AM|
|10-07-2012 11:17 AM|
|mitmaks||pads were worn evenly. If I pump up brakes with engine off and then turn it on, brake pedal does not go down a bit. I guess it is a bad booster?|
|10-07-2012 10:30 AM|
|10-06-2012 10:10 PM|
|stea||Just because the booster is getting vacuum doesnt mean its good. Start the vehicle and let the vacuum build up then shut it down. Wait for a few minutes and the pull the one way valve from the booster. If good you will hear the pressure release. If not, the diaphram has gone south.|
|10-06-2012 07:57 PM|
Brakes stop very slow
So I went to help guy with his brakes on 80 Jeep truck. The problem is that it takes forever to slow down the truck. All the pads/shoes are good (front pads were replaced), we bled system and pedal is firm. However if you try to stop it just won't stop, takes long time for it to stop.
Is master cylinder bad? I unhooked vacuum line to booster (it has power booster) and it has suction.