rstarch345
NAXJA Forum User
- Location
- Where ever I can wheel
I've got a major brake problem. Here's the story.
The problem involves the metering valve in the proportioning valve.
I put Ford caliper brakes on the 8 1/4 a few years back and had lots of problems.
What happend was, the brakes felt great during the first 5 minutes or so of use. After driving for awhile and using the brakes, the front brakes would build up pressure. The more the brakes were used the tighter they got until they were close to a lock up. (One time the did lock up).
I did all the proportioning valve mods and still, I continually locked up the front brakes. I burned up pads and calipers on a regular basis. I even tried the ZJ proportioning valve and for a while, it seemed to work. In the end, I finally had to install a manual proportioning valve to solve the problem and has been great for a year now.
Recently, I installed a 8 3/4 axle with 11" drum brakes, and I backed the manual proportioning valve down to mininum. Everything worked great but I had a severe right hand pull with normal braking. I checked everything and replaced the front pads, calipers and hoses. The rear brakes were completely new and fully checked out.
Finally I decided to remove the manual proportioning valve and reassembled the OEM metering valve. I pressure bled the system and the breaks felt great.
Now I'm back to the brakes feel great during the first 5 minutes or so of use. After driving for awhile and using the brakes, the front brakes will build up pressure. The more the brakes are used the tighter they get until they are close to a lock up and severely hot.
I've spent countless hours now trying to resolve this issue and I've now got 5 days to solve it since my 2 week vacation is coming up. I really need help.
I'm fairly certain I reassembled the metering valve correctly (referred to GoJeeps site) and I'm willing to replace the entire proportioning valve if necessary. I just want to make sure it's what is needed to do before I incur more expenses.
The problem involves the metering valve in the proportioning valve.
I put Ford caliper brakes on the 8 1/4 a few years back and had lots of problems.
What happend was, the brakes felt great during the first 5 minutes or so of use. After driving for awhile and using the brakes, the front brakes would build up pressure. The more the brakes were used the tighter they got until they were close to a lock up. (One time the did lock up).
I did all the proportioning valve mods and still, I continually locked up the front brakes. I burned up pads and calipers on a regular basis. I even tried the ZJ proportioning valve and for a while, it seemed to work. In the end, I finally had to install a manual proportioning valve to solve the problem and has been great for a year now.
Recently, I installed a 8 3/4 axle with 11" drum brakes, and I backed the manual proportioning valve down to mininum. Everything worked great but I had a severe right hand pull with normal braking. I checked everything and replaced the front pads, calipers and hoses. The rear brakes were completely new and fully checked out.
Finally I decided to remove the manual proportioning valve and reassembled the OEM metering valve. I pressure bled the system and the breaks felt great.
Now I'm back to the brakes feel great during the first 5 minutes or so of use. After driving for awhile and using the brakes, the front brakes will build up pressure. The more the brakes are used the tighter they get until they are close to a lock up and severely hot.
I've spent countless hours now trying to resolve this issue and I've now got 5 days to solve it since my 2 week vacation is coming up. I really need help.
I'm fairly certain I reassembled the metering valve correctly (referred to GoJeeps site) and I'm willing to replace the entire proportioning valve if necessary. I just want to make sure it's what is needed to do before I incur more expenses.