I've posted in the brake, and the van forum looking for info on the brake lines in my 96 E150. I've lost 3 lines in the past year due to rust. I've looked under the van near the HCU, and all lines come together to form a big rust pile. I'd like to replace them as they were originaly designed, but I'm toying with the idea of bypassing the abs altogether, and putting in a conventional brake system. The abs has been a nuisance since day 1, so the idea of dumping the system is tempting. What I need is a diagram or drawing of the abs system brake lines...from MC to the rear wheel cylinders. I have both the Haynes, and Chilton's, but don't have a good drawing of the brake line routing in either manual. I have so many lines rusted together, I can't tell which is which. Any help, or manual suggestion is appreciated.

I live in Ma., and at present I can get a sticker with the ABS light on.

I thought I'd try this forum because when vans, and pick-ups were in the same forum, I remember being a couple of good wrenches in here. Hope I'm not out of line.

Thanks leo

 

If it is anything like my F250 truck then the route is simple. A pipe runs down the firewall from the master cylinder to the RABS valve on the inside of the frame rail. Another pipe goes from the RABS valve along the frame rail (left side) to the rear brakes.

 

Thanks Lazy K for the info, but this is 4wabs. As best I can tell the two lines from the M.C. run down through a section of frame, and attatches to the front of the HCU. Three lines run out of the HCU. Two to the front, and 1 to the rear. I've come across several drawings that show part of the piping, but nothing very complete. I have a diagram, but too many lines to keep track of. I can figure out the outlet lines, but the two from the master cyl are unclear. They go into a section of frame, and come out with the two front brake lines down below a bit, They all attatch to the HCU under the driver's seat, so it's hard to follow the routing. I'll probably have to guess at where each line hooks up at the HCU. The conventional brake system is looking better all the time. I'm gonna put it back up on stands pretty soon, Think I'll cut one of the lines from the MC, and see if I can separate it from the rest, might luck out and be able to trace it down to the hydraulic control valve.

Thanks again for the response.

 

Hydraulic Control Unit (HCU)

The anti-lock hydraulic control unit (2C215) is located in the front of the engine compartment on the left frame rail. It consists of a valve body assembly, a pump and a motor assembly. During normal braking, fluid from the brake master cylinder (2140) enters the anti-lock hydraulic control unit through two inlet ports located at the top of the anti-lock hydraulic control unit. The fluid then passes through three normally open inlet valves, one to each wheel in the front and one line to the rear wheels. If the anti-lock brake electronic control module senses that a wheel is about to lock, the anti-lock brake electronic control module pulses the appropriate inlet valve which closes that valve. This prevents any more fluid from entering the affected brake. The anti-lock brake electronic control module then looks at that wheel again. If it is still decelerating, the anti-lock brake electronic control module pulses the normally closed outlet valve which decreases the pressure trapped in the line.

The valve body, the pump and the motor are not serviceable separately.

Here are some diagrams for you:

http://i54.photobucket.com/albums/g91/subford/Breaks/19964ABS.gif

http://i54.photobucket.com/albums/g91/subford/Breaks/19964ABS2.gif

http://i54.photobucket.com/albums/g9.../19964ABS3.gif

http://i54.photobucket.com/albums/g9...964ABS3Key.gif

 

Those diagrams would be a lifesaver for me, but the links are broken!

If SubFord happens to see this reply, please drop me an email. Thanks.

 

very unusual for subfords links to not work.

he will no doubt fix them soon.

 

thanks subford, the links are fixed.

 

I hope it helps him.

 

Very nice. Thanks very much.

 

Interesting, I thought that all of our trucks were only rear wheel abs.

 

the f150, f250, f350 only have rabs.

the broncos have 4wabs

the op has a van, which he says has 4wabs.

 

Hi there

New to this forum ! allready seems to be full of experts .......nice



could you or anyone else provide me with diagram for my E-150 braking system RABS ´92 ?

I only have problems with it ! seems like the rear and front lines at mounted wrongly at the master !

near booster is primary and has a kinda onewayvalve on the outlet ! and the line is going to the rearbrakes during the RABS modul ........... this must be wrong ???? as the Haynes tells me that the primary´outlet is for the frontbrakes !

I did change the lines today front and rear ! before is was overbraking at the rear and almost no braking power in front ! now it seems correct for the rear end ! but my front brakes are stuck as the onewayvalve dosnt relise the pressure for the front brakes ...... the valve can only be placed in the primary outles as the secondary outlet is a diff. diameter !

whats wrong in this picture ?????

Thanks in advance for any answers to this riddle ;-)

Sincerly
JCBX

 

Without jacking up the van and searching every wheel, How can I tell if I have 4WABS or RABS? Ford wants $46.00 for a "build-sheet" to let me know. I have 4 lines coming from the abs pump, but I don't know if all four lines are abs controlled.
Thanks, Dennis

 

1996 vans were normally equipped with 4-Wheel Anti-Locks, remainder had plain RABS...........the info being provided above is incorrect/not showing , your component locations are as follows:

Hydraulic Control Unit is located in the front left-hand frame inboard liner just under the driver's seat

Anti-Lock Brake Control Module is located o the fuel filter bracket mounted on the left-hand inboard frame just forward of the fuel tank

Two Front Brake Anti-Lock Sensors are attached to the suspension knuckles

Speed Indicator Rings are pressed onto the backside of the rotors

Rear Axle Speed Sensor is integrated in the rear axle housing

Stoplight switch is attached to the brake pedal

ABS Relay is located in the power distribution box

Pump Motor Relay is located in the power distribution box


("Fix it Right the First Time on Time" --- the quote on the blue covered 1996 Econoline Body, Chassis Ford Service Manual I pulled the data from)



BTW --- Many people "bypass" the ABS ---I strongly recommend NOT doing it...........

 

Your information confirms my layout. Thank you for your patient answer.