Question about 1994 Toyota Pickup

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Master cyl. i have already replaced this master cylinder twice. we've checked all lines for leaks and for creases. can you tell me exactly what this master cyl. should do? its suppose to pump the same amount of fluid out from both the front and rear lines correct?

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Did You bleed your brakes after changeing the master cylinder. yes it does but most of your stoping power is up might have to bleed it. start from the furthers away from the master cylinder. which would be your backleft then your right,then your front rightand left front. you have pump it ten times then hold it in until someone opens and closes the bleeder might have to this twice to each one...if that dont work check your vacuum hose coming from the master to your intake...

Posted on Jan 25, 2009


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2003 RSX Manual: Slave cylander has been replaced twice. Still leaking fluid until transmission freezes. Mechanic can't find source of leak. Any ideas?

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good luck.

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Air in the brake line - we bleed the brakes and get the air out, but it comes back. The master cylinder has been replaced two times. where is the air coming from?

Check brake caliper piston seal or wheel cylinder, leaking bleeder screw, ABS unit, brake line fittings, those are just a few points at which air could be entering the hydraulic system.

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I have a 93 accord and when i go to stop the brake gose to the floor,just put new pad on didnt fix help

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Apr 29, 2009 | 1986 Ford F 250

1 Answer

1994 GMC Sonoma - brakes went out - we have replaced the pads, lines and they are still not engaging to stop the vehicle - could this be the calipers or the master cylinder?

Did the peddel go to the floor when the breaks went out before you replaced pads and lines? If it did than its the master cyl. If you replace the master cyl. yourself just remember you have to bench bleed it before you install it. The new master cyl. will come with instructions on how to do that. The calipers will not do what you discribed unless they have a major leak. Also after you install the new master cyl. chanses are all the breaks will have to be blead, starting with right rear, left rear, right front, left front. In that order.

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1 Answer

How dificult is it to replace a wheel cylinder in a 2000 Jeep.

On a scale of 1-10, its about a 3. It's a bolt out, bolt in item. Remove the brake linings, detach the brake line, using a flair nut wrench to avoid damage. (if frozen, remove line completely & replace. line can be cut above nut and 6pt socket can be used to remove it.). Unbolt cylinder and push it through the backing plate. Reverse process to install. When finished, re-fill master cyl and open bleeder screw on new cyl. push brake pedal down gently with your hand (do not use your foot or push can damage the master cyl) and keep it down while someone closes the bleeder. Open the r/r bleeder and do same thing. till no air comes out. repeat again at l/r.Close it up, re-fill master and your'e finished. (note: if master was dry before you began repair, re-fill and begin bleeding process at master before bleeding either rear cyl.While bleeding, closely monitor master level so you do not run dry)
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1 Answer

Losing brake fluid & have no brakes unless I pump them

quick tests to do to see if your master cyl is nackerd.

pull the valve on the brake buster out ( the 1 with rubber hose attached, and be gentle so as not to brake it)
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you can also undo the master cyl from the booster and gently slide it forward and see if there is any fluid behind it and on the back off it if there is fluid you will need a new master cyl

good luck these checks are very easy and you should be ok to perform them

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