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2000 Kia Sportage 4X4, DRZ 400 dual sport, Ram 3500
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14 Posts
Discussion Starter #1
Break fluid is leaking between the master brake cylinder and the vacuum boost tank. I'm guessing fluid is getting past seals in the master cylinder and coming out the back end. Will fluid get into the booster section and ruin something in there? Is it best to buy new master cylinder or get a rebuild kit, and how hard to get it apart to replace seals etc. Any precautions before taking it apart, I've never done it before? Thanks for your help, Bill:rolleyes:
 

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Caribou, Otter, Buffalo
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2,694 Posts
It is most often cheaper to purchase a rebuild than to attempt the job yourself... replace ASAP, these(brakes) are essential to safe driving conditions... Philip
 

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'02 Sportage 2 door.
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339 Posts
I bought a brand new master cylinder from NAPA July last year for right around $100.

Note there is a special tool required to set the piston depth of the master cylinder.
 

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2000 Kia Sportage 4X4, DRZ 400 dual sport, Ram 3500
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14 Posts
Discussion Starter #4 (Edited)
Thank you both for your information, I didn't know about the special tool I'll find one of those too maybe O'Reilly has a loaner. Does it come with the new cylinder as a kit or will I have to get it seperate? While looking for a replacement cylinder more questions. How to determine if the brake system is ABS or not? Looks like different master cylinder for each type. OK, pictures show ABS has shaft in it and non ABS does not.
 

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'02 Sportage 2 door.
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339 Posts
None of the parts stores have the tool. They just give you a deer in the headlights look if you ask them for it. I even tried a KIA dealership and they were no use.

The tool shows up on Ebay from time to time. That's where I ended up finding mine. I think Snap-On has it but they want around $150 if I remeber correct.
 

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2000 Kia Sportage 4X4, DRZ 400 dual sport, Ram 3500
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14 Posts
Discussion Starter #6
None of the parts stores have the tool. They just give you a deer in the headlights look if you ask them for it. I even tried a KIA dealership and they were no use.

The tool shows up on Ebay from time to time. That's where I ended up finding mine. I think Snap-On has it but they want around $150 if I remeber correct.
OUCH! Maybe I can find a mechanic friend with one. That's expensive for a hopefully only 1 time use. (I'll probably see deer in headlight experience too!)
Thanks, Bill
 

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2000 Kia Sportage 4X4, DRZ 400 dual sport, Ram 3500
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14 Posts
Discussion Starter #7 (Edited)
I bought a new master cylinder from local parts store $93. They did not know about a special tool. The installation instruction didn't suggest one so I took a chance and installed according to instructions, it had tubing and connections to fill cylinder with fluid (and get the air out) before bolting it onto the booster and connecting brake lines. After installation completed tested brake many times before driving in traffic all works great and peddle feels good and solid. My brakes are not ABS the cylinder would be different for ABS brakes.
Thanks for your help job done.
 
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