Ford

Have Ford questions? Ask a mechanic for answers ASAP

Ask an Expert,
Get an Answer ASAP!

This answer was rated:

Brakes on 1992 F350 2 wheel drive (dually) The master cyl is…

Brakes on 1992 F350*****(dually) The...
Brakes on 1992 F350*****(dually) The master cyl is new, the booster is new, the vacuum pump is new. The front calipers, shoes and rotors are new. Rear brakes are fairly new. No leaks. The brakes are still spongy. all that is left is a bleeding issue or the ABS Hydraulic Unit What is the bleeding process for this truck with the ABS Hydraulic Unit?
Show More
Show Less
Ask Your Own Ford Question
Answered in 46 minutes by:
3/20/2018
Eric
Eric, Automotive Repair Shop Manager
Category: Ford
Satisfied Customers: 35,151
Experience: Automotive Repair Shop Manager, Technician
Verified

HI,

Below is the bleed procedure

NOTE: Bleed primary and secondary hydraulic brake systems separately, bleeding longest line first on each system. Do not allow reservoir to run dry during bleeding operation. Never reuse fluid that has been drained from hydraulic system.

1. Loosen master cylinder to hydraulic line nuts and wrap shop cloths around tubing below fitting to absorb escaping brake fluid.

2. Depress brake pedal slowly forcing air trapped in master cylinder out at fitting.

3. Hold pedal down and tighten fittings, then release brake pedal.

NOTE: Releasing brake pedal before fittings are tightened will allow air to enter the master cylinder.

4. Repeat steps 1 through 3 until air ceases to escape at fittings and brake pedal is firm.

5. Bleed brakes as follows:

RR, LR, ABS valve, RF, LF

a. Pump pedal several times, then hold pedal down firmly.

b. With pedal firmly depressed, open bleeder screw on one rear brake until pedal fades, then close bleeder valve.

c. Repeat procedure until a continuous flow of brake fluid is released from bleeder valve.

d. Repeat steps 5a through 5c on other rear brake.

6. Bleed the Rear Antilock Brake System (RABS) valve.

7. Bleed the front brakes using same procedure as for rear brakes.

8. Check brake operation and ensure pedal is firm, road test vehicle.

If for any reason, you can't rate my answer OKAY, GOOD, or EXCELLENT/3 STARS OR HIGHER today. Please reply and let me know why, so I can help more/better. All follow up responses are FREE, after completing the required rating
Please remember to rate service using the separate rating page. Thank you
Please note that if you have a subscription service, you still are required to rate service, however you are not charged again. This is just so that your expert is credited for their time and services. Thank you.

Eric
Eric, Automotive Repair Shop Manager
Category: Ford
Satisfied Customers: 35,151
Experience: Automotive Repair Shop Manager, Technician
Verified
Eric and 87 other Ford Specialists are ready to help you
Ask your own question now
Customer reply replied 4 months ago
Thanks Eric. In your experience, how often have you seen the ABS or RABS valve go bad? The complete brake response pattern is as follows:1) Start truck
2) Push pedal. It will be a bit hard and stop 1/3 of the way down. Push it again and it will be easy, stop about 1/4 of the way down and then slowly sink almost to the floor.
3) On this truck, the ABS and the RABS are the same aren't they? The cyl is bolted to the frame about where the drivers seat is.Thanks
Tom

HI,

I have replaced quite a few of them over the years, so they do fail fairly often after they are 10-15yrs old.

The ABS and RABS are one in and the same on your vehicle.

Just to eliminate a defective caliper or wheel cylinder, and before replacing the RABS unit, I would do a brake hose clamp test. Take brake hose clamps or vise grips and lightly clamp the front and rear brake hoses about 1/2 up the hose.

Now test the pedal with engine on. If still sinking, then with new master cylinder and having bled it correctly, you are looking at a faulty RABS unit.

If pedal is firm, then starting at the rear, remove one clamp at a time and retest pedal each time you remove a clamp. At whichever wheel you remove clamp and pedal sinks, that is your problem area

Ask Your Own Ford Question
Customer reply replied 4 months ago
I spent the day yesterday replacing the clutch slave and getting a good soaking of fluid while on my back. I think the local tire and brake shop can have the pleasure of bleeding this one. Thanks Sir. I rated 5 stars. Let me know if for some reason it doesn't show on your end.

It does show here and thanks

Ask Your Own Ford Question
Customer reply replied 4 months ago
Eric,
I just got the F350 back from a tire and brakes place. They attempted to power bleed the brake system. Still no real braking pressure. At this point the only thing that is not new is that ABS unit. This seems to be the one from autozone. It seems to be a pretty straight forward part to put in. Is the the place you would think the problem is? Thanks, Tom https://www.autozone.com/brakes-and-traction-control/abs-hydraulic-unit?newYmme=true

HI,

Ok, before you replace the abs unit, I want you to check 2 things, just in case

First, check the calipers and tell me if the bleeder screws are at the top or bottom of the caliper

Second, make sure the rear brakes are adjusted properly. The parking brake should only click 3-5 times before it will not set any more. IF little to no resistance when setting the parking brakes, the rears are out of adjustment and the shoe to drum clearance should be adjusted

Ask Your Own Ford Question
Customer reply replied 4 months ago
The two brand new front calipers have the bleeder nipples at the top next to where the line attaches. The emergency brake locks up the rear wheels about 1/3 of the way down.
Customer reply replied 4 months ago
Big O tires used a pressure bleeder on the fluid reservoir. He bled the abs, then the real, then the fronts. We've had a few mechanics attempt to get the brakes solid over a few years but no one has replaced the ABS unit. I understand the early 90's ford trucks were the devil to get the brakes really solid.
Customer reply replied 4 months ago
I didn't get the feeling their mechanic was the strongest wrench in the draw.

Hi,

Ok, all good there. Only thing left is the ABS unit

Ask Your Own Ford Question
Customer reply replied 4 months ago
Pretty simple on your back R&R isn't it? Is there anything thing I should do to the new unit before putting it in as far as fluid?

Hi,

It is a straightforward replacement and no bench bleeding before installing it. install and then bleed system as I previously outlined.

One other possible cause - master cylinder pushrod not adjusted correctly. Give me a moment to post that procedure

Ask Your Own Ford Question
Customer reply replied 4 months ago
Hey Eric. So now that I've gotten the front brakes rebuilt and nice and quiet, I'm hearing some rumble from the rear brakes and when I push on the brakes, I can hear a slight click that is steady with the wheel rotation as it slows down. I'm taking your advice and looking at the condition and adjustment of the rear brakes as an issue affecting the spongy pedal. Question: Is this truck the year and model that requires me to pull the whole axle to replace the drums? I'm thinking that click might be a crack in the drum. If it is that type, can you send me details on how to do that and if it's a job you think I could do?

HI,

Ok, the axles dont come out. Once you remove the wheels, you will see a spacer in front of the drum, slide it off. Then unscrew the lug stud extenders and slide off the drum

The clicking may be from a crack in the drum, cracked shoe, loose spring or hardware. When you reinstall everything, spin the wheels. They should make 1 revolution and then stop. Adjust brakes until it does that.

Ask Your Own Ford Question
Customer reply replied 4 months ago
Ok. Thanks. BTW. The entertainment value of old ford truck DIY videos never ceases to amaze me. Check this at 8:16 and 11:35. Worth it. https://youtu.be/dRhkYQsAKI4

That was good - there are some scary DIY videos out there

Ask Your Own Ford Question
Customer reply replied 4 months ago
34;yup...don't do dat" Thanks for the pics
Was this answer helpful?

How JustAnswer works

step-image
Describe your issueThe assistant will guide you
step-image
Chat 1:1 with a ford mechanicLicensed Experts are available 24/7
step-image
100% satisfaction guaranteeGet all the answers you need
Ask Eric Your Own Question
Eric
Eric
Eric, Automotive Repair Shop Manager
Category: Ford
Satisfied Customers: 35,151
35,151 Satisfied Customers
Experience: Automotive Repair Shop Manager, Technician

Eric is online now

A new question is answered every 9 seconds

How JustAnswer works:

  • Ask an ExpertExperts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional AnswerVia email, text message, or notification as you wait on our site. Ask follow up questions if you need to.
  • 100% Satisfaction GuaranteeRate the answer you receive.

JustAnswer in the News:

Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.

What Customers are Saying:

AlvinC answered a question about my Ford truck that only someone with an in-depth knowledge of his subject would have known what was going on.

Rich DUSA

Because of your expertise, you armed me with enough ammunition to win the battle with the dealer. They are installing a fuel filter and fuel pump at no charge to me.

MollyUSA

I needed help with my car on Saturday morning....got a response in 5 minutes, and it was the perfect solution. Thanks again to your service.

Jason V.Kirkland, WA

I do know, after going though this with JustAnswer, that I can somewhat trust my mechanic but I will always contact you prior to going there.

BRNew Jersey

I would (and have) recommend your site to others I was quite satisfied with the quality of the information received, the professional with whom I interacted, and the quick response time. Thanks, and be sure that I'll be back whenever I need a question answered in a hurry.

Stephanie PElm City, NC

used your service this weekend with "Trecers" help. thank you ,thank you, thank you. replaced an A/C fan motor. Local Auto Zone had part. $15.00 "tracer" fee and $40.00 for parts, I saved several hundreds of dollers at a shop. i will recommend you and use you in the future.

David L.Richmond, TX

9 dollars, 2 hours of my time, and I drove away. Your diagnosis was right on the mark. Thank you so much.

PhilMarysville, CA

< Previous | Next >

Meet the Experts:

Ron

Ron

ASE Certified Technician

25,182 satisfied customers

23 years with Ford specializing in drivability and electrical and AC. Ford certs and ASE Certs

Chris (aka- Moose)

Chris (aka- Moose)

Technician

29,223 satisfied customers

16 years experience

John Mc

John Mc

Ford Technician

5,495 satisfied customers

19 years Ford Lincoln Mercury experience

Chuck

Chuck

ASE Certified Technician

1,685 satisfied customers

33 Years Experience,Ford Senior Master,ASE Master,L1 Advanced Engine Performance

Cam

Cam

Journeyman Automotive Technician

10 satisfied customers

GM Grand Master Technician 2007. 14 years Automotive experience.

Mike V.

Mike V.

Auto Service Technician

1,591 satisfied customers

25 years experience on all makes and models, Licensed NYS Inspector.

Richard

Richard

ASE Certified Technician

1,524 satisfied customers

12 years at a Ford Lincoln/Mercury and Jaguar dealer as a technician and shop foreman.

< Previous | Next >

Related Ford Questions
I've replaced everything within the brake system except for
I've replaced everything within the brake system except for the lines but there is no leaking and I have bleed the brakes and master over and over agen and the brakes work good the tires will lock up … read more
heavy_chevy_396
heavy_chevy_396
Vocational, Technical or Trade Scho
2,518 satisfied customers
2002 f350 sd broke rear wheel rubber brake line. lost all
2002 f350 sd broke rear wheel rubber brake line. lost all brake fluid. replaced all rubber lines, calipars master cyl, brake buster, power steering pump. brakes still spongy and brakes pull some times… read more
Diesel Doc
Diesel Doc
Diesel Technician/Shop Foreman
High School or GED
2,495 satisfied customers
2004 escape , I just bought this daughter it was having a
2004 escape , I just bought this for my daughter it was having a brake problem when we got it. The pedal goes all the way to the floor and will barely stop even at coasting speed. I have gravity bleed… read more
Eric
Eric
Auto Technician
589 satisfied customers
Hear a ssing sound at brake booster vacuum fitting while
Hear a hissing sound at brake booster vacuum fitting while it's plugged in but when it's out and finger over fitting and hose separately there is no leak. Symptom is spongy brake pedal after brake job… read more
Jeremy
Jeremy
Technician
Vocational, Technical or Trade Scho
104 satisfied customers
2007 ford focus abs brakes spongy. Would have a good solid
2007 ford focus abs brakes spongy. Would have a good solid brake pedal for about a month, would get spongy, then back to normal for a few weeks. Changed master cylinder/front calipers/front pads. Ford… read more
APenland
APenland
Ford Senior Master Technician
Associate in Industrial Management
3,186 satisfied customers
f250: am working on a 1977 ford f250 4x4 frankenstein has
am working on a 1977 ford f250 4x4 frankenstein has stock front end 1989 f350 dually rear .I have replaced front calipers (loaded from napa supreme) master cyl. and rear shoes as wheel seal was leakin… read more
Mike V.
Mike V.
Auto Service Technician
Subaru and Nissan factory training.
1,591 satisfied customers
expedition: I have a 97 Ford Expedition and I have just replaced
I have a 97 Ford Expedition and I have just replaced the master cylinder, new rotors, ceramic pads and new calipers. The brake stiffens up when the vehicle is not running but when running after hours … read more
Chris (aka- Moose)
Chris (aka- Moose)
Technician
Vocational, Technical or Trade School
29,223 satisfied customers
1997 Ford f350: 4x4..abs and the Brake light coming..calipers..rebuilt
I have a 1997 Ford f350 4x4 with a 460. My problems started with the ABS and the Brake light coming on in the dash and my brakes got really spongie. I put a new master cylinder, brake booster, caliper… read more
Dieseljunky2
Dieseljunky2
Locomotive Mechanic
Ford Certified Technician
310 satisfied customers
90 f350: brake system: booster,master cyl, calipers..abs..pads..rotors
I am working on a 90 F350 Dually 7.3 diesel RABS non hydro. I have replaced every part on the brake system: booster,master cyl, calipers, wheel cylinders, rubber lines, steel lines, rear abs unit, sho… read more
Eric
Eric
Automotive Repair Shop Manager
N/A
35,151 satisfied customers
1996 F 350: 2 wheel drive crew cab..cruise control..brake pedal..pads
Hello I have a 1996 F 350 Power stroke 7.3 XLT centurionXXXXXcrew cab dually with cruise control. When I got the truck it had a very soft brake pedal that would almost bottom out even after pumping a … read more
John Crouch
John Crouch
lead senior master tech
Vocational, Technical or Trade Scho
1,383 satisfied customers
96 f350. new booster,master cylinder. reblead system.
96 f350. new booster,master cylinder. reblead system. brakes are spongy. when running brakes go to the floor… read more
Anthony
Anthony
Master Automobile Technician
Vocational, Technical or Trade Scho
8,789 satisfied customers
2002 ford escape: wheel drive..v6..l front rotor had rust..abs light
this question is about a 2002 ford escapeXXXXXautomatic with v6 the brakes were going to the floor and fluid was low and there was fluid in the booster.so i replaced the master cylinder. i bench bled … read more
RJ
RJ
Ford Tech
High School or GED
1,573 satisfied customers
94 e-350 van diesel..problem pedal is dropping..master cylinder..pads
94 e-350 van diesel dually - brake problem pedal is dropping while running, changed master cylinder and tested it by blocking it off. replace both front calipers, wheel cylinders , pads and shoes, did… read more
Kyle
Kyle
Technician
High School or GED
190 satisfied customers
94 f350 super duty: cyl..booster/rear shoes/rear cylinders..pads..abs
94 f350 super duty 7.3 brakes started fadding to floor replaced master cyl/ booster/rear shoes/rear cylinders/hardware/front rotors/pads/ calipers hoses/calipers/ if i block front brake line before it… read more
Auto Go
Auto Go
Shop Owner
Associate Degree
590 satisfied customers
2007 ford: changed rear brake calibers..sport trac..soft pedal
i just changed rear brake calibers on my 2007 ford sporttrac and bleed the brakes and i still have a soft pedal which i didnt have before what should i do?… read more
William
William
Store Manager
High School or GED
42 satisfied customers
95 F-250: with no brake pedal..and previous owner..soft/spongy
I have 95 F-250 PSD with no brake pedal and very little brakes. I bought the truck like this and previous owner said pedal had been soft/spongy for the last five years or longer but stopped fine. Here… read more
powerstroker24
powerstroker24
Ford Master Diesel Technician
Vocational, Technical or Trade Scho
218 satisfied customers
94 Ford F250: brake pedal..engine running..3 master cyls, New calipers
94 Ford F250 4x4 7.3 Desiel. Loosing brake pedal only with engine running. new Booster, 3 master cyls, New calipers, New wheel cylinders in the rear. Vacuum pump reading 21 in hg. Vacuum bleed brakes … read more
zzdaryl
zzdaryl
Lead Auto Tech
Some college and advanced training
4 satisfied customers
1992 ford f350: 4x2..calipers, anti-lock valve, and pressure bled
1992 ford f350 srw 4x2. Brake pedal goes to floor. Have replaced m/cyl., wheel cyl., calipers, anti-lock valve, and pressure bled. Still have same problem.… read more
Sparkybuoy
Sparkybuoy
Vocational, Technical or Trade Scho
192 satisfied customers
Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Show MoreShow Less

Ask Your Question

x