Tj rear brakes weak to none solution
Easy fix,common problem overlooked.One hard hit on the brake pedal sends the slide in the proportion/combination valve to absolute minimum rear brakes for control purposes.Good theory if you have baby tires that can skid and a lite with min traction.Add big tires and lots more braking is required to stop the Jeep,lots more especially the rear starving for brake pressure.Jack up the rear so the wheels are off the ground,start it up put it in gear,chances are there are no brakes back there.Try bleeding,no to minimum fluid.
The proportion valve below the master cylinder is bad enough stock but a little wear on the oring on the slide totally reduces braking in the rear.Pull the small rubber cover off the front of the proportion valve and put a rag under it,a small amount of brake fluid will come out.Take a 13/16 wrench and remove the spring loaded end,remove the spring and with needle nose pliers pull the slide out.Probly see a messed up oring,remove it anyway and put it back in with the spring.It take strong fingers to get it started.Fill the master cylinder with brake fluid,front reservoir feeds back wheels.Best way to bleed is as follows.Losen the bleeder screws first and tighten slightly.Get 2 ft of aquarium plastic tube like used on fish tanks.Get an empty water bottle and drill a hole just big enough for the tube.Put an inch of brake fluid in the bottle and submerge one end of the tube in the fluid,it must remain submerged.Press the other end of the tube on the bleeder valve and open it.This is how to bleed brakes alone.Start at the passenger rear and pump the brake pedal 3/4 way down about 10 times and check the bottle .Fluid should be showing in the tube.Fill the small water bottle 1/2 way and repeat to left rear.If you did work on the front do them next,passenger front first.Keep an eye on the master reservoir do not let it get close to empty.Have 2 small bottles of dot 3 brake fluid available.Now you have equal braking.There is no control issue during heavy braking cause the big tires do not skid out like the tiny ones.Works great as far as I am concerned especially off road.If you want to decrease braking they sell an adjustable valve add on pretty cheap.This is for a non abs system .Pete
Easy fix,common problem overlooked.One hard hit on the brake pedal sends the slide in the proportion/combination valve to absolute minimum rear brakes for control purposes.Good theory if you have baby tires that can skid and a lite with min traction.Add big tires and lots more braking is required to stop the Jeep,lots more especially the rear starving for brake pressure.Jack up the rear so the wheels are off the ground,start it up put it in gear,chances are there are no brakes back there.Try bleeding,no to minimum fluid.
The proportion valve below the master cylinder is bad enough stock but a little wear on the oring on the slide totally reduces braking in the rear.Pull the small rubber cover off the front of the proportion valve and put a rag under it,a small amount of brake fluid will come out.Take a 13/16 wrench and remove the spring loaded end,remove the spring and with needle nose pliers pull the slide out.Probly see a messed up oring,remove it anyway and put it back in with the spring.It take strong fingers to get it started.Fill the master cylinder with brake fluid,front reservoir feeds back wheels.Best way to bleed is as follows.Losen the bleeder screws first and tighten slightly.Get 2 ft of aquarium plastic tube like used on fish tanks.Get an empty water bottle and drill a hole just big enough for the tube.Put an inch of brake fluid in the bottle and submerge one end of the tube in the fluid,it must remain submerged.Press the other end of the tube on the bleeder valve and open it.This is how to bleed brakes alone.Start at the passenger rear and pump the brake pedal 3/4 way down about 10 times and check the bottle .Fluid should be showing in the tube.Fill the small water bottle 1/2 way and repeat to left rear.If you did work on the front do them next,passenger front first.Keep an eye on the master reservoir do not let it get close to empty.Have 2 small bottles of dot 3 brake fluid available.Now you have equal braking.There is no control issue during heavy braking cause the big tires do not skid out like the tiny ones.Works great as far as I am concerned especially off road.If you want to decrease braking they sell an adjustable valve add on pretty cheap.This is for a non abs system .Pete
