How to Bleed Kelsey Hayes ABS Module?
Bleeding Kelsey Hayes ABS module is a difficult task. But it is easier than you think. I had the same problem. By doing deep research, I was able to find a way to bleed my ABS module successfully.
To bleed the brake system, raise the vehicle and prepare the BPMV assembly by opening the internal bleeder valves and installing tool J 39177 on the HPA valve stems. Bleed each wheel circuit in order, then remove the tools and close the bleeder valves. Perform six 4WAL function tests and bleed all wheel circuits again.
I’m here to show you how I successfully bled a Kelsey Hayes ABS module, and by the end, you’ll know how to bleed both an EBC4 and an EBC310 4WAL ABS module.
How I Bled Kelsey Hayes EBC4 4WAL ABS Module
Once I felt that my brake pedal was spongy, I knew that this was often caused by air in the ABS as I had some knowledge about vehicles. My car has a Kelsey Hayes EBC4 4WAL ABS module. This is how I bled my ABS module based on the details found in the research. I also got help from my brother with this task, as it was difficult to do alone.
Tools Needed:
- A clear hose
- Car jack
- A container
- Dot 3 brake fluid
- Two proportional valve depressors
Step 1: Raise the car
I first raised my car so that I could reach the bleeder valves easily.
Step 2: Prepare the BPMV assembly
After opening two internal bleeder valves ½ turn, I installed the proportioning valve depressor on the two stems of the HPA valves (two tools are needed).
Step 3: Bleed the wheel circuit
On the bleeder valve, I installed a clear hose.
I then submerge the hose’s opposite end into a container that is half-filled with fresh DOT 3 brake fluid.
Then I turned the bleeder valve a half-turn or more.
After that, I gradually depressed the brake pedal all the way. The bleeder valve’s tightness pushed the brake pedal back.
I waited for the master cylinder pistons to return to the home position for fifteen seconds.
Note: Verify the level of the master cylinder fluid. Keep doing this until you’ve bled a pint of fluid. Bleed the fluid until no air is visible in it.
Step 5: Repeat the process for other wheels
I bled the left rear, right front, and left front wheel circuits in that order using the same technique as in step 3.
Step 6: Remove proportioning valve depressors
Then I took the two tools out of the BPMV assembly’s HPA valve stems, and I shut the internal bleeder valves.
Step 7: 4WAL function test
I ran six 4WAL function tests using TECH 1. During the function tests, firmly depress the brake pedal. This will clear the BPMV assembly of air.
Step 8: Bleed all wheels again
I then repeated steps 3 and 4 and bled all wheel circuits once more. Done!
Feel the brake pedal. Repeat steps 3 and 4 if there is sponginess.
Alternate Method for EBC4 4WAL ABS Module
Tools needed:
- A clear hose
- A container
- Dot 3 brake fluid
- Two proportional valve depressors
Step 1: Install pressure bleeding tools
Install pressure-bleeding tools on the reservoir of the master cylinder.
Step 2: Get the BPMV assembly ready
- Half-turn the two internal bleeder valves.
- Attach proportioning valve depressor to each of the two stems of the HPA valves.
- Attach proportioning valve depressor to the combination valve’s metering stem.
Note: This procedure requires three proportioning valve depressors.
Step 3: Bleed the wheel circuit
- Attach a transparent hose to the bleeding valve.
- Place the hose’s opposite end in a container that is half-filled with fresh DOT 3 brake fluid.
- After bleeding a pint of fluid, turn the bleeder valve open by 1/2 to 1 turn. Bleed the fluid until no air is visible in it.
- Lock down the bleeder valve.
Step 4: Repeat the process for other wheels
Following the same procedure as in step 3, bleed other wheel circuits in that order.
Step 5: Remove proportioning valve depressors
Take out the three tools from the combination valve and BPMV assembly. Close the bleeder valves inside.
Step 6: 4WAL function test
Run six 4WAL function tests using TECH 1. During the function tests, firmly depress the brake pedal. This will clear the air for BPMV assembly.
Step 7: Bleed all wheels again
Repeat steps 3 and 4 and bleed all wheel circuits.
Examine the pedal sensitivity. Repeat steps 3 and 4 if there is sponginess.
How to Bleed the EBC310 4WAL ABS Module
This process is mostly the same as the EBC 4 procedure. Here it is.
Tools needed:
- Car jack
- Transparent hose
- Dot 3 brake fluid
Step 1: Raise the Car
To reach the bleeder valves, raise the car.
Step 2: Bleed the wheel circuit
- Attach a transparent hose to the bleeding valve.
- Place the hose’s opposite end in a container that is half-filled with fresh DOT 3 brake fluid.
- Rotate the bleeder valve to a half-turn or more.
- Slightly depress the brake pedal all the way.
- Adjust the bleeder valve’s tension.
- Let go of the brakes.
- Allow the master cylinder pistons to return to the home position for 15 seconds.
- Verify the level of the master cylinder fluid.
- Keep doing this until you’ve bled a pint of fluid. Bleed the fluid until no air is visible in it.
Step 3: For the other wheels, repeat the procedure
Using the same method as in step 2, bleed the left rear, right front, and left front wheel circuits in that order.
Step 6: 4WAL function test
Run four 4WAL function tests using TECH 1. This will clear the BPMV assembly of air.
Step 7: Re-blend each wheel
Using steps 2 and 3, bleed each wheel circuit once more.
Analyze the pedal sensitivity. Steps 2 through 4 should be repeated if there is sponginess.
Alternate Method for EBC310 4WAL ABS Module
Tools needed:
- Pressure bleeding equipment
- Proportional valve depressors
- Transparent hose
- Dot 3 brake fluid
Step 1: Attach pressure bleeding equipment
Attach equipment for pressure bleeding to the master cylinder reservoir.
Step 2: Attach proportional valve depressor
Attach the proportional valve depressor to the BPMV assembly and press the metering stem of the combination valve.
Step 3: Bleed the wheel circuit
- Attach a transparent hose to the bleeding valve.
- Place the hose’s opposite end in a container that is half-filled with fresh DOT 3 brake fluid.
- After bleeding a pint of fluid, turn the bleeder valve open by 1/2 to 1 turn. Bleed the fluid until no air is visible in it.
- Adjust the bleeder valve’s tension.
Step 4: Bleed Other wheels
Following the same steps as in step 3, bleed the other wheel circuits in that order.
Step 5: Remove proportional valve depressors
Take out the proportional valve depressor from the combination valve’s metering stem.
Step 6: 4WAL function test
Run four 4WAL function tests using TECH 1. This will clear the BPMV assembly of air.
Step 7: Bleed wheels again
Using steps 3 and 4, bleed each wheel circuit again.
Check the pedal sensitivity. Steps 2 through 6 must be repeated if there is sponginess.
FREQUENTLY ASKED QUESTIONS(FAQs):
How much does it cost to bleed Kelsey Hayes ABS module?
In general, the cost of bleeding an ABS module can range from $80 to $200 or more, with an average cost of around $100 to $150.
How much does it cost to replace Kelsey Hayes ABS module?
If you are buying a brand-new module, it will likely be more expensive than if you were to purchase a used or refurbished one.
The cost of a Kelsey Hayes ABS module can range from around $200 to $800. Replacement labor is charged at around $120.
What are the components of Kelsey Hayes ABS?
- ABS Modulator
- Wheel speed sensor
- Vehicle speed sensor
- Digital radio adapter controller
- Electric control unit
- Indicator lights
How long do Kelsey Hayes ABS modules last?
ABS module problems are very rare and usually last for the lifetime of the vehicle.
Conclusion
Hope you understood how to bleed different types of Kelsey Hayes ABS modules. Bleeding your ABS module is a crucial step in ensuring the proper operation of your car’s braking system. By making your brakes less effective, air bubbles lodged in your ABS can endanger your safety and the safety of other road users. Even though bleeding your ABS module can be difficult, it is a necessary task that shouldn’t be ignored.
