Question about 1999 Ford F150 Regular Cab

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I need to know the routing of the brake lines at the EHCU. Specifically which brake line connects to which port on the EHCU. There are 3 brake lines in the truck, 1-front right brake, 2-front left brake, 3 the rear brakes. There are 5 brake line ports on the EHCU, 2 of the ports connect to the master cylinder, and the other 3 ports go to a specific wheels brakes for the antilock to work properly. I only need the 3 brake line ports, which brake connects to which port.

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Posted on Jan 02, 2017

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SOURCE: im looking for a brake line diagram of all the

Disconnect the hydraulic brake lines.

  1. Disconnect the inlet hydraulic brake lines.
  1. Disconnect the outlet hydraulic brake lines.

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Posted on Aug 19, 2010

kapishtech
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SOURCE: im looking for a brake line diagram of all the

Important: Thoroughly wash all contaminants from around the electric hydraulic control unit (EHCU). The area around the EHCU MUST be free from loose dirt to prevent contamination of disassembled ABS components.
Disconnect the three electrical harness connectors from the electronic brake control module (EBCM).
Important: Make sure that brake lines are tagged and kept in order for proper reassembly.
Disconnect the 5 brake lines from the brake pressure modulator valve (BPMV). When looking at the brake pipe port face of the BPMV, the ports are assigned as follows:
Upper Left--Left Front Output.
Upper Middle -- Right Front Output.
Upper Right--Rear Output.
Lower Left--Master Cylinder Secondary/Front Input.
Lower Right--Master Cylinder Primary/Front Input.

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Posted on Aug 23, 2010

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2 Answers

Brake line routing diagragm


If the lines are that bad, there is no simple cure but to replace them!
Check with a dealer (I know, I cringe at this thought,too! LOL) if a kit of preformed lines is available for a reasonable price; otherwise, you or somebody else, will have to remove each line separately to replace it. You would need a bender and the proper flaring tool and wrenches to do the job right... some of the fitting nuts may be unique to those connections so far as size goes. If you have the time and patience and a helper, you can save the labor costs. You will also need to find out the proper way to bleed the whole system once you have finished!

Jul 19, 2014 | 1999 Chevrolet Silverado 1500

1 Answer

I hve a 96 chevy 1500 4wd with brake issues. ABS light is on in the dash. Have replaced both frt calipers, pads, hoses. Replaced rear brakes and drums. Replaced master cylinder. Bled two quarts of...


you may have air trapped in the ABS EHCU. Did you use this procedure?

Bleeding the EHCU

Bleeding the EHCU requires the use of the TECH-1 scanner or its equivalent and the appropriate cartridge. Additionally, 3 tools, J-39177 or equivalent, are required. Bleeding cannot be performed without this equipment.
The EHCU must be bled after replacement or if air is trapped within the unit. It must be bled after bleeding the master cylinder and before bleeding the individual wheel circuits.
The Internal Bleed Valves on either side of the unit must be opened 1 / 4 - 1 / 2 turn before bleeding begins. These valves open internal passages within the unit. Actual bleeding is performed at the two bleeders on the front of the EHCU module. The bleeders must not be opened when the system is not pressurized. The ignition switch must be OFF or false trouble codes may be set.
  1. Open the internal bleed valve 1 / 4 - 1 / 2 turn each.
  2. Install one tool J-39177 on the left bleed stem of the EHCU. Install one tool on the right bleed stem and install the third tool on the combination valve.
  3. Inspect the fluid level in the master cylinder, filling if needed.
  4. Slowly depress the brake pedal and hold it down.
  5. Open the left bleeder on the front of the unit. Allow fluid to flow until no air is seen or until the brake pedal bottoms.
  6. Close the left bleeder, then slowly release the pedal. Wait 15 seconds.
  7. Repeat Steps 4, 5 and 6, including the 15 second wait, until no air is seen in the fluid.
  8. Tighten the left internal bleed valve to 5 ft. lbs. (7 Nm).
  9. Repeat Steps 3-7 at the right bleeder on the front of the unit.
  10. When bleeding of the right port is complete, tighten the right internal bleed valve to 5 ft. lbs. (7 Nm).
  11. Remove the 3 special tools.
  12. Check the master cylinder fluid level, refilling as necessary.
  13. Bleed the individual brake circuits at each wheel.
  14. Switch the ignition ON . Use the hand scanner to perform 3 function tests on the system.
  15. Carefully test drive the vehicle at moderate speeds; check for proper pedal feel and brake operation. If any problem is noted in feel or function, repeat the entire bleeding procedure.

Oct 10, 2010 | Chevrolet 1500 Cars & Trucks

1 Answer

I have an ABS light problem on my GMC mod 1998, when i change the rear diferentiel , is there any link to the front break


what is the nature of your problem light staying on going off coming on? the problem started after the rear end change? The EHCU has 2 lines going into it and 3 out. The 2 "in" are from the combination valve, 1 for rear system and 1 for front system. The 3 "out" are split into 1 for rear brakes and 2 for front brakes. check this out and let me know to further help you

Dec 24, 2009 | 1998 GMC Jimmy

1 Answer

My rear brake return line (I am assuming its a return line it comes out of the top of the splitter block on top of the rear axle) is diconnected on the opposite end and is causing me to have brake...


There is no return line. The line should be filled with fluid that applies the brakes when pressurized. Some systems have a vent hose on the rear axle that is only connected on one end, but the hydraulic line will be solid and unopened. There is a junction on some systems that routes the fluid to the right and left wheels. There are different kinds of brake problems - if you are not familiar with braking systems I recommend you refer it to a professional.

Dec 11, 2009 | Dodge Dakota Cars & Trucks

2 Answers

Do i need to remove fuel tank to replace brake lines on 1997 expedition


I have never heard of a reason to replace brake hard lines. Thier are short flexable ones that can replaced but no reason to unless someone put the wrong fluid in and swelled the rubber parts. In that case you would also need wheel cylinders and a master cylinder

Oct 31, 2009 | 1997 Ford Expedition

1 Answer

Vacuum lines for an 1983 GMC CABALLERO with 229 V6


nice choice of rod, but the v 6, junk , need to run untill 454,350, 396 arrive? cool, ok. only need dist vac to accelerater vac port pass side of carb,manifold vac port to brake boost lose rest.cap off.<check timing> racing trick, vac guage max vac back off 2 lbs of vac perfect timing for race. set wreckers up that way for clean burn and better milage. wreckerlover@yahoo.com or classic roadside services .com e-mail rick v-6 231 229 vega/monza

May 18, 2008 | 1986 GMC Caballero

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