Medium and Heavy Trucks

Have truck repair questions? Ask an Expert

Ask an Expert,
Get an Answer ASAP!

Okay I just put new calipers on an brake pads on front of a…

Customer Question
Okay I just put...

Okay I just put new calipers on an brake pads on front of a C70 truck with hydraulic brakes all the way around hydraulic disc and they still are sticking and not releasing

Mechanic's Assistant: How old are the rotors? How many miles are on the car?

I guess they're the original 1990s but they look good there's no lip on them and it's I put all new hydroboost system on it and everything should be good to go to break color or rotors are good they're thick and I just have not figured out why it will not release the pressure stays at the calipers

Mechanic's Assistant: What year is your C70?

1990 C70 diesel

Mechanic's Assistant: Are you fixing your C70 yourself? What have you tried so far?

New hydroboost new pump and new calipers on the front and they brake pads all the everything on the back called specks out babe good everything looks right at a new oil pan oil cooler for the hydroboost

Mechanic's Assistant: Anything else you want the mechanic to know before I connect you?

I was just wondering if maybe it could be the proportioning valve not letting the fluid go back to the master cylinder

Submitted: 11 months ago.Category: Medium and Heavy Trucks
Show More
Show Less
Ask Your Own Medium and Heavy Trucks Question
Answered in 1 minute by:
9/17/2017
Technician: ggrote1,
 replied 11 months ago
ggrote1
Category: Medium and Heavy Trucks
Satisfied Customers: 18,026
Verified

Welcome! My name is ***** ***** I will do my best to assist you with this problem.

Ask Your Own Medium and Heavy Trucks Question
Technician: ggrote1,
 replied 11 months ago

when they stick and do not release if you remove the brake lines off the master cylinder will they unstick ?

Ask Your Own Medium and Heavy Trucks Question
Was this answer helpful?

How JustAnswer works

step-image
Describe your issueThe assistant will guide you
step-image
Chat 1:1 with a technicianLicensed Experts are available 24/7
step-image
100% satisfaction guaranteeGet all the answers you need
Ask Daniel Wilson Your Own Question
Daniel Wilson
Daniel Wilson
Daniel Wilson
Category: Medium and Heavy Trucks
Satisfied Customers: 2,825
2,825 Satisfied Customers
Experience: Owner at DJ Wilson

Daniel Wilson 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:

Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help.

Mary C.Freshfield, Liverpool, UK

This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!!

AlexLos Angeles, CA

Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult.

GPHesperia, CA

I couldn't be more satisfied! This is the site I will always come to when I need a second opinion.

JustinKernersville, NC

Just let me say that this encounter has been entirely professional and most helpful. I liked that I could ask additional questions and get answered in a very short turn around.

EstherWoodstock, NY

Thank you so much for taking your time and knowledge to support my concerns. Not only did you answer my questions, you even took it a step further with replying with more pertinent information I needed to know.

RobinElkton, Maryland

He answered my question promptly and gave me accurate, detailed information. If all of your experts are half as good, you have a great thing going here.

DianeDallas, TX

< Previous | Next >

Meet the Experts:

Daniel Wilson

Daniel Wilson

2,825 satisfied customers

Owner at DJ Wilson

Cat Man

Cat Man

Cat Engine Expert

4,530 satisfied customers

I am ASE Master Truck Certified.

Wayne

Wayne

Journeyman

2,892 satisfied customers

worked on, Gmc, Macks, Freight liner,Mercedes Benz,,Ford, sterling

Jeremy

Jeremy

Certified Truck/Bus Technician

2,243 satisfied customers

ASE Med/HD Truck Technician, NATEF Diesel Engines and Electrical/Electronics Technician, EPA 608/609 HVAC Certified, Steering/Suspension and ABS/Brakes Technician

cumminsdr

cumminsdr

Mechanic

1,351 satisfied customers

All types of Cummins applications

Curtis B.

Curtis B.

Technician

991 satisfied customers

Technician turned service manager on multiple lines of trucks and engines, used in industry.

dieseldan55

dieseldan55

Contractor

74 satisfied customers

Road Service mechanic for Volvo Construction.

< Previous | Next >

Related Medium and Heavy Trucks Questions
What is the pressure on a parking brake of a th636c
what is the pressure on a parking brake of a th636c telehandler … read more
Curtis B.
Curtis B.
Technician
Associate Degree
991 satisfied customers
I have 03 c754b hypac roller and the brakes won't release I
I have 03 c754b hypac roller and the brakes won't release I found 4 wires against the metal plate where it turns fixed the wires and still won't move any ideas … read more
Curtis B.
Curtis B.
Technician
Associate Degree
991 satisfied customers
Brakes not functioning properly. 2005 freightliner M2 Cat
all shoes calipers have been changed....1 calipers pistons most of they way out...the other 3 looked like they havent moved...… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
2,892 satisfied customers
I was given a Deere 5 speed 102 yesterday.It has been
I was given a John Deere 5 speed 102 yesterday.It has been maintained annually by a john deere dealer. When they got it back from them the last time the were charged $1800.00 just for service. They we… read more
Curtis B.
Curtis B.
Technician
Associate Degree
991 satisfied customers
I have a 1999 international 4700 4x2 rollback wrecker. It
I have a 1999 international 4700 4x2 rollback wrecker. It has a service brake lever in the dash that you set after applying the park brake. its the back up system used when loading vehicles. after set… read more
Alex Olsen
Alex Olsen
auto/diesel/industrial
488 satisfied customers
I HAVE AN iVECO 2003 TURBO DAILY TRUCK 40C13 AND THE DASH
hI I HAVE AN iVECO 2003 TURBO DAILY TRUCK 40C13 AND THE DASH PUTS UP A FAULT CODE SOMETIMES OF E1 could you tell me what this is please. Also we recently put new front brake disc pads on and replaced … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
2,825 satisfied customers
Why would the left rear brake stay locked up after applying
why would the left rear brake stay locked up after applying the brakes on a 1999 international 4700 series truck and the only way to release it is by opening the bleeder screw. everything is new,rotor… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
2,892 satisfied customers
1984 Ford 800 cabover. Lucas girling brake system, front
1984 Ford 800 cabover. Lucas girling brake system, front disc brakes wont release. all parts new front and rear including master cylinder.… read more
SuperDave
SuperDave
auto technician
101 college hrs
867 satisfied customers
I have a 1990 F800 that won't start. I want to have it towed
I have a 1990 F800 that won't start. I want to have it towed to shop, but can't release parking brake.… read more
Jeremy
Jeremy
Certified Truck/Bus Technician
Associate Degree
2,243 satisfied customers
2006 ISUZU NPR. RECENT REPLACED FRONT PADS , TURNED ROTORS
2006 ISUZU DIESEL NPR. RECENT REPLACED FRONT PADS , TURNED ROTORS , AND REPLACED THE BRAKE BOOSTER, DUE TO BRAKE BOOSTER WARNING LIGHT ON DASH. TEST DROVE TRUCK AND EVERYTHING SEEMED NORMAL. LESS THAN… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
2,892 satisfied customers
I have a 2004 Freightliner Sporthauler with hydraulic brakes.
I have a 2004 Freightliner Sporthauler with hydraulic brakes. The front brakes over heated and were dragging which caused the oil hub to fall apart. It is now in at an International Dealer, but they a… read more
Travis A. Wells
Travis A. Wells
Truck Mechanic
Associates of Applied Science
4 satisfied customers
Installing new brakes on a 2002 International 4300. We did
Installing new brakes on a 2002 International 4300. We did the back brakes and bleed the the brakes and all went well. We then decided to go ahead and change the front brake pads. We changed the pads … read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
2,892 satisfied customers
We have a 98 Freightliner FL-60 with hyd. brakes--all the braking
We have a 98 Freightliner FL-60 with hyd. brakes--all the braking is happening on the front steer axle -- is there a proportioning valve in the frame or is there other issues Ed… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
2,825 satisfied customers
i have a 91 topkick sigle axle with standard breaks. ive replaced
i have a 91 topkick sigle axle with standard breaks. ive replaced all the calipers and pads. my problem is that the brakes stick sometimes as im driving. they build heat and smoke. the other day i wen… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
2,892 satisfied customers
I have a 2002 GMC c6500 dump truck with 8.1 liter and topkick
I have a 2002 GMC c6500 dump truck with 8.1 liter and topkick automatic. It was originally a moving truck and was converted to a dump truck before I bought it. I had a problem with the reduced engine … read more
tkman55
tkman55
Owner 24 HR Mobile Service TK/Carrier
55 satisfied customers
I am working on 1995 Thor/Eldorado bus. The brakes are air
I am working on 1995 Thor/Eldorado bus. The brakes are air over hydrolic (I guess). I am getting no pedal hardly at all. How do solve this issue?… read more
spankyjr1
spankyjr1
Retired
Vocational, Technical or Trade Scho
19 satisfied customers
Ford l8000: Have a l8000 dump with air over hydraulic brakes
Have a l8000 dump with air over hydraulic brakes . The rear air brakes work good the front stick . It's not calipers or lines hoses . When the stick I can release the pressure at the wheels and master… read more
MohrDiesel
MohrDiesel
Self Employed
CERT III Automotive Mechanical Tech
6 satisfied customers
I have a 2002 International 3400 that has a brake issue. When
I have a 2002 International 3400 that has a brake issue. When the brakes are applied sharply the bus pulls to the right hard for a heartbeat, then straightens up. If the brakes are then quickly reappl… read more
spankyjr1
spankyjr1
Retired
Vocational, Technical or Trade Scho
19 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