Question about 1990 Jeep Wrangler

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Ring valve job brake lines and front ball joiunts coat

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Is there a question there?
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prices about the unknown for no reason

Posted on Jul 11, 2013

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The front drivers side break keeps locking. I have replaced the caliper and now when I pump it no fluid is coming out from the line.


Did air get into the master cylinder? If you can, try bleeding the master cylinder. The fact that you aren't getting any fluid out of the line suggests that the master cylinder isn't pumping fluid.

Master cylinders are (usually) on a split circuit system - that is, the front left brake is on the same line as the rear right. The front right brake is on the same circuit as the rear left.

A point to be aware of is when bleeding brakes/doing brake work and if the master cylinder runs dry, is that a seal inside the master cylinder can fail/twist over and not pressurise that particular line, even though it may pressurise the opposite brake line.

I'm in the UK. I have a 1998 Jeep Grand Cherokee 4 litre, which I am slowly rebuilding. Three weeks ago I fitted new front brake rotors, new front callipers and pads. I've been rebuilding cars for over 40 years now and have done countless brake overhauls.

.. and could I get a hard pedal after the job was completed? I must have bled the brakes three times a day for a week and couldn't get a brake pedal. I phoned a full time mechanic I know - he came and tried to bleed the brakes three times and couldn't get a hard pedal.

That's when you think 'The master cylinder was working before I started the job so it must be still working now'.

I fitted a brand new master cylinder and because some parts for older jeeps are hard to come by in the UK, I fitted a second hand proportioning valve. When I bled the brakes again the pedal became rock solid. Fixed.

You're probably fed up with your braking problem now ... and apparently this 'no fluid/brake pedal' is more common than you may think.

Try bleeding the master cylinder if you can. If you suspect that it isn't fully working - try an overhaul kit which is cheaper than a new master cylinder.

As for changing the proportioning valve .. that's your decision. My brakes now work though the truth is I don't actually know which was at fault as I changed both the master cylinder and proportioning valve at the same time. Maybe both were at fault, for whatever reason. I genuinely don't know.

The positive aspect is that you are doing your own work and know what you're doing. You're saving on labour charges.

Apr 18, 2016 | 1998 Dodge Grand Caravan

1 Answer

Ball joint bolt fell out upper in 2007 GMC Envoy


Upper ball joint? That's not related to the job of replacing a tie rod or tie rod end. It's also not related to the brake job.

It's an '07 and it had a bolt-in ball joint? That's not factory - it's been replaced before.

Aug 07, 2014 | 2007 GMC Envoy

2 Answers

How do you change a brake line and is it easy


Depends on which Brake line. Usually when 1 goes bad the rest are not far behind.

Brake lines are in sections. There are some which are short, rubber coated lines close to the wheels. These must flex for the motion of the wheel.

Other lines are total metal, and are rigidly mounted to mounting blocks where they join the flexible lines. They often go long distances the length of the car frame.

You can buy preformed line sets, the better ones are stainless steel or composite nickel/copper. Some must be built and bent to fit with bending tools and flaring kits for the ends. The tools may be loaned from some Autoparts stores.

The shorter, rubber coated lines are the easiest to replace. You will have to bleed the entire system when any line is replaced. There are tools which can make this a 1 man job.

I tell many of my clients that the first experience with this problem should be as an observer. Unlike a car which fails to start after a new part is attached, a new brake part improperly attached will cause an accident. In the old days, a brake job routinely required rebuilding wheel cylinders or calipers. Now, the same parts are left undisturbed and the pads and shoes are all that is removed. The hydraulic system is kept closed.

You will need special tubing wrenches to open each wheel bleed valve or a 6 point socket to break the bleeder free. But to tighten the fitting, special wrenches work best. Apply NO heat to the bleeder valve as brakefluid is highly combustible.

All 4 wheels must be bled when 1 line is removed. Regardless of which wheel position was removed, start with the longest brakeline and bleed it first. Then the next longest and so on. Make sure to check brake fluid levels constantly in the Master cylinder.

I hope my solution is helpful.

Sep 11, 2012 | 1993 Ford Crown Victoria

2 Answers

How to change cv joints


I would replace the complete axle assembly,
it would be cheaper and come with a warranty.

Instructions
  1. Remove the CV Joint
    • Remove the boot straps from the CV joint using a standard screwdriver or a pair of diagonal cutting pliers.
    • Slide the boot back over the interconnecting shaft.
    • Get Chevrolet Info at InsideLine Free News, Videos, Photos & More!
      Detach the stop ring at the base of the CV joint assembly using a pair of snap ring pliers.

    • Pull the CV joint assembly from the interconnecting shaft to force the snap ring at the top of the shaft through the CV joint assembly.
    • Tilt the inner cage (the cage holding the balls in place inside the housing) in different angles to remove the six balls. Use your thumb or a hammer and a wooden dowel, if necessary.
    • Tilt the inner cage enough to remove it from its housing.
    • Rotate the race inside the cage--the part that holds the balls against the inner cage--and remove the race from the cage.
      Replace the CV Joint
      • Apply a thick coat of grease to the new CV joint race using special high temperature/high pressure grease (see Tips below).
      • Install the race inside the new cage. Then install the cage/race assembly inside the CV joint housing.
      • Tilt the cage at different angles and fit the new balls in place.
      • Slide a new CV joint rubber boot over the interconnecting shaft.
      • Install a new snap and stop ring on the interconnecting shaft.
      • Push the interconnecting shaft through the CV joint assembly to force the snap ring through the assembly.
      • Apply a thick coat of CV joint grease to all moving parts of the assembly.
      • Apply a coat of CV joint grease to the inside of the rubber boot. Then slide the boot over the CV joint assembly.
      • Install the boot straps at each end of the boot, and tighten the straps using a clamp tool or screwdriver, depending on the type of clamp.


Mar 22, 2012 | 1997 Chevrolet Cavalier

2 Answers

Replaced brake pads on 2001 Ford Escape and never opened the brake line, pushed the calipers back in and put on new pads after doing so the brakes are spongy. Bled the lines had a little air but the brakes...


you need a new master cyclinder..you needed to open the brake line before you forced the caliper back in ,,,otherwise you force the fliud the wrong way though the master cylinder and ruin the internals

Jan 05, 2011 | 2001 Ford Escape

1 Answer

I am having a problem bleading my 2000 grand pris brakes. check all the brake line no leaks but when i bleed the brabe pedal coes to the floor. i have also bleeb frunt to rear and rear to frunt.


This is a two person job. You have one push the brake pedal to the floor and hold it there. Then the other opens the bleed valve until brake fluid comes out. Close the bleed valve and have the other person release the brake pedal. Repeat. Continue doing this on each brake bleed valve until there is no more air coming out of the lines at each bleed valve just a solid stream of fluid. Fill master reservoir back up with brake fluid as needed through the process. You bleed from farthest to closest meaning from rear to front.

Aug 04, 2010 | 2000 GMC Sierra

1 Answer

How do you adjust the rear brakes on a 2003 kia spectra? It feels like you have to push the break pedals down to the floor in order for the car to stop. They seem to need tightening, but there doesn't seem...


The rear brakes on the Spectra will always engage less than the front brakes. If you have to push hard on the brake pedal then you probably have air in the brake lines from the last brake pad replacement. The brakes need to be bled with this method: Use 1/8 inch 2 foot long hose from parts store and attach from bleeder valve ball on the brake caliper to a bottle partially filled with brake fluid. End of hose should be submerged in bottle. With second person holding brake pedal to floor, slowly turn bleeder valve counter clockwise (loosen tiny bit) with wrench and watch for dirty brake fluid to create bubbles in the bottle. When bubbles start, quickly tighten bleeder valve back to tight. Second person lifts foot while valve is tight and then pushes pedal to floor again and THEN you again open bleeder valve slowly turning counter clockwise and watch for bubbles. Repeat until no more bubbles can be created in the bottle where the hose is submerged. Move to next caliper and repeat. For a firm brake pedal you will need to repeat this on all four calipers. My 2003 Kia's rear brake pads "fell apart" and never wore out in 190000 miles because they do not get used. The braking power is primarily in the front disk brakes on this model. Removing and replacing the rear drum brake linings did not even require me to bleed the brake lines. They weren't that tight before or after the replacement procedure.

Jul 24, 2010 | 2003 Kia Spectra

1 Answer

How do I change the rotors and brakes on my 1999 hyundai tiburon?


Steps to replace front brake rotors and pads:

Safley jack up vehicle.
support vehicle on safety stands
remove front wheels
Remove 2 bolts holding the caliper to the caliper support.
remove caliper
remove old brake pads
remove 2 bolts holding caliper support to the spindle
remove rotor, might need a good whack with a hammer to loosen rust bond, also might have a locking ring on one lug stud
sand any and all rust from wheel hub
apply a liberal coating of antisiezing compound.
replace rotor and one lug nut to hold rotor steady
replace caliper support
replace new brake pads making sure squeel sensors are on inside upper corner, also make sure to apply caliper grease to caliper slides and pad sliding surfaces push caliper piston back.
replace caliper
replace wheels and torque to specs
lower vehicle
pump pedal
road test listening for any noises.

PS. these are generic instructions that are very basic, performing a brake job is a very precise and careful job. remember this syetem is responcible for stoping your vehicle at 65mph. this is not a job to attemp if you do not have a good grasp of mechanical applications. One mistake could cause you your life or injurt to your persons or someone else. if you are not comfortable undertaking this task please consult a professional.

please feel free to ask any additional questions you might have.

Aug 28, 2009 | Hyundai Motor 1999 Tiburon

2 Answers

2002 Suburban needs tune up....


Inspect Brakes and Traction Control Evaporative Emissions System (E) Inspect all the fuel and vapor lines and the hoses for proper hook-up, routing and condition. Ensure that the purge valve works properly, if equipped. Replace the components as needed. Exhaust Gas Recirculation (E) Fluid - Differential Inspect front/rear axle fluid level and add fluid as needed. Check constant velocity joints and axle seals for leaking. Lubricate Steering and Suspension Lubricate the front suspension, ball joints, steering linkage, transmission shift linkage, transfer case shift linkage, parking brake cable guides, and brake front axle. Ball joints should not be lubricated unless their temperature is -12 degrees C (10 degrees F) or higher or they could be damaged. Replace Air Filter Element (E) Engine Oil (E) Change engine oil and filter as indicated by the GM Oil Life System (or every 12 months, whatever occurs first). Reset the indicator. Never drive the vehicle more than 16 000 km (10,000 miles) without and oil and filter change. The system will not detect dust in the oil. If the vehicle is driven in a dusty area, be sure to change the oil every 5 000 km (3,000 miles) or sooner. Fuel Filter (E) Oil Filter, Engine Rotate Tires

Nov 04, 2008 | 2002 Chevrolet Suburban

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