Hi, here is the disassembly of the RABS module on my ranger 98 2WD. Is this part is malfunctioning you need to replace in your local parts store for a new one.




There's the same part in others Ford Vehicles. In the same model of Mazda and some old Dodge Trucks but i dont know is they uses the same PSI pressure inside the sistem cause the drum rear brakes can be different.
I'm not a mechanics this is only for the demostration of the part.




The main function for this valve is for Anti-Lock purpuses on the rear wheels for the 2WD, in the 4WD is a different module, without this part or bypass it, the wheels will lock in high speed brake and or when you needed the most in emergency brake.




The RABS also uses a sensor in the rear transmission junction, VSS (Vehicle Speed Sensor). This sensor is always working above 8 km/h. Sensing the teeth spin of the crown transmission rear sistem.







All the parts connects to the module inside cabin behind the Radio stack and to the Fuse junction box and the side fuse box in the left compartiment.





I got a lot of fluid out off the RABS dump valve, the brake recipient went empty and the lights of BRAKE and ABS came out in the dashboard panel,




I have low brake issues and the pedal went all the way to the floor. I research all the post on internet but no one cover all the issue.

Just some random people give little advice or a piece of the whole story.

I purgue the sistem so many times spending hours and 2 galons of brake fluid in 6 month i face this problem.


Finally i solved on my own the problem. But is not all the same with these old ABS part in the Ranger.


First of all - I test the module with the connector pin inside the cabin. DTC codes - C244 connector as is shown in the picture.

01 - Some rangers had the pin connector inside the engine bay, mine got in the cabin, passenger side, behind the side plastic protector.

02 - One side the male cable ORANGE/BLACK - the other female connector is RED


I grounded this connector with the chassis bolt. Next i put the key in On possitions before the Start. I wait to the panel to flash out the code after the check that is on the 35 Fuse.

I got the DTC code number 16, it flashes 16 times the last flash was little longer.


Second, here some of the pictures in the full disassembly of the REAR ABS module.

01 - I disconnect the battery.
02 - I disconnect the connector in the module.
03 - I use 13 MM Wrench for the chasis bolts



4- I disconnect on of the hard hoses. One got stuck in the valve but i solved later with a WD40 and vise.

5- Here is the up white part.



6 - All the parts



7 - Up view



8 - Accumulators - Pistons - disassembly



9 - Rear accumulator - Backview



10 - Front accumulator - Backview



11- I tested the magnetic polarity in the accumulators.



12 - I changed the Oring in the dump piston mine was smash by the pressure. It has to be the same size is you use a larger one the piston get stuck in the cabity.
The function of this piston is to move back and forward controlled by the valve.
In the online forum's some people just block the piston with a stronger string to let the piston unmoved causing probably a bypass movement i guess.
You can take the piston out of the cabity moving on trought the front cabity with a slim knife or stainless steel hard wire pushing it out.



13 - Reassembly all the parts backs in place.







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Before i re-assembly all the parts i clean all one by one, a lot of rust out. I put the metal caps back to. I had to purgue all the parts with brand new fluid DOT 3.
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The last thing i did was to change both of the rear drum brake wheel cylinders, i believe on of them was stuck open because one wheel brakes more than another, I checked the size of the shoes to and the distance between and reajusted.




Now i solved this problem the Ranger brakes again, but takes me a lot of research and work in the field.

Thanks