87MJJeep Posted July 29, 2009 Share Posted July 29, 2009 For a few months, when I apply the brakes, something under the truck squeaks. It's clearly related to the brake pedal/linkage. Is there something failing in the linkage, or will grease of some kind take care of it? Is there anything in particular to be on the lookout for when I crawl under there with some grease? Thanks! Link to comment Share on other sites More sharing options...
88mjmanche Posted July 29, 2009 Share Posted July 29, 2009 yea do not get grease on the breaks it will make them so crappy you won't even belive it. mabey try to buy so disk break quite i used it and it worked good READ THE INSTRUCTIONS :yes: Link to comment Share on other sites More sharing options...
Red 1989 MJ Posted July 29, 2009 Share Posted July 29, 2009 You could pass air on the break to blow the dust. :chillin: Link to comment Share on other sites More sharing options...
jbhill Posted July 29, 2009 Share Posted July 29, 2009 either brake booster were the rod goes in is failing, or the bushing on the pedal is worn. Link to comment Share on other sites More sharing options...
87MJJeep Posted July 29, 2009 Author Share Posted July 29, 2009 either brake booster were the rod goes in is failing, or the bushing on the pedal is worn. That's what I was looking for. ;) Is that pedal bushing on the inside or outside of the cab? This noise clearly comes from outside and underneath the truck in the firewall area. Hopefully it's not the booster, but I guess a new one wouldn't be too bad for peace of mind. Link to comment Share on other sites More sharing options...
maddzz1 Posted July 30, 2009 Share Posted July 30, 2009 Mine does this too; but my pedal is also very spungy and goes almost to the floor. The brake light also keeps coming on even tho it is full of fluid. My booster is definately the cause. Good time to upgrade to a double booster Link to comment Share on other sites More sharing options...
87MJJeep Posted July 30, 2009 Author Share Posted July 30, 2009 Mine does this too; but my pedal is also very spungy and goes almost to the floor. The brake light also keeps coming on even tho it is full of fluid. My booster is definately the cause. Good time to upgrade to a double booster Is that a common upgrade? OEM parts? What does it do? Just helps with the pedal effort? Link to comment Share on other sites More sharing options...
88mjmanche Posted July 30, 2009 Share Posted July 30, 2009 i know what is happing cause this happened to me :D :smart: . what that little light is saying is FREAKEN CHECK MY DRUM BREAKS :yes: its either the pads are gone or the wheel cylinder is rusted closed take apart your drums and look that means you should disasemble the whole drum ONE AT A TIME take the little rubber boots off the wheel cylinder and see if the slides are frozen don't LET THEM COME OUT. have fun with all the springs :yes: :cheers: Link to comment Share on other sites More sharing options...
maddzz1 Posted July 30, 2009 Share Posted July 30, 2009 Mine does this too; but my pedal is also very spungy and goes almost to the floor. The brake light also keeps coming on even tho it is full of fluid. My booster is definately the cause. Good time to upgrade to a double booster Is that a common upgrade? OEM parts? What does it do? Just helps with the pedal effort? If you get a booster from a 95-96 XJ it will bolt right in. You just have to grind down the end a little. If you can, get the brake pedal and brakelight switch too. If you keep your brake pedal you just have to do a little modifying to get the brake light switch to work viewtopic.php?t=4968&highlight=prop+valve If you scroll thru this one it shows the 95-96 how to: http://www.madxj.com/MADXJ/technical/te ... pgrade.htm Link to comment Share on other sites More sharing options...
maddzz1 Posted July 30, 2009 Share Posted July 30, 2009 i know what is happing cause this happened to me :D :smart: . what that little light is saying is FREAKEN CHECK MY DRUM BREAKS :yes: its either the pads are gone or the wheel cylinder is rusted closed take apart your drums and look that means you should disasemble the whole drum ONE AT A TIME take the little rubber boots off the wheel cylinder and see if the slides are frozen don't LET THEM COME OUT. have fun with all the springs :yes: :cheers: This is a very good possibility too. My first attempt at drum brakes, should be fun Link to comment Share on other sites More sharing options...
87MJJeep Posted July 30, 2009 Author Share Posted July 30, 2009 Mine does this too; but my pedal is also very spungy and goes almost to the floor. The brake light also keeps coming on even tho it is full of fluid. My booster is definately the cause. Good time to upgrade to a double booster Is that a common upgrade? OEM parts? What does it do? Just helps with the pedal effort? If you get a booster from a 95-96 XJ it will bolt right in. You just have to grind down the end a little. If you can, get the brake pedal and brakelight switch too. If you keep your brake pedal you just have to do a little modifying to get the brake light switch to work viewtopic.php?t=4968&highlight=prop+valve If you scroll thru this one it shows the 95-96 how to: http://www.madxj.com/MADXJ/technical/te ... pgrade.htm Thanks for the explanation and links. I may try that. Link to comment Share on other sites More sharing options...
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