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Old 03-10-2007, 04:23 PM   #1 (permalink)
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Date registered: Apr 2005
Vehicle: 03 SLK 230
Location: Las Vegas
Posts: 57
Brake Fluid Flush

I did my brake flush this weekend and here's how I did it. Thanks to everyone's post. I would have never been able to do it without the help from this site. I bought a brake bleeder from Autozone for $29 that was designed to be attached to the bleeder but decided not to use it (I would have attached the pics but I can only attach 10 files at a time). I just had the wife pump the brakes for me instead. I got the brake fluid from my dealer (Pic 1) for $19 (.75 liter and we used it all).
Step 1: I used a turkey baster to remove old brake fluid from master cylinder (Pic 2).
Step 2: Remove cap and filter from master cylinder (Pic 3).
Step 3: Remove old fluid (Pic 4). Fill to the max with new fluid.
Step 4: Jack up the car and remove tire. I started from the farthest to the closest tire from the master cylinder.
Step 5: Locate the bleeder and remove rubber cap (Pic 5 and 6 - rear, Pic 8 and 9 - front).
Step 6: With an adjustable wrench, loosen the bleeder until brake fluid starts to leak ( a couple of turns).
Step 7: Pump the brake pedal and collect old fluid (Pic 7 - rear, Pic 10 - front). Repeat until new fluid comes out. I couldn't tell with mine so we just pumped the brakes 10-20 times for the rear brakes (less for the front) just to be sure. Make sure to check the master cylinder often to make sure you have enough fluid (we checked and filled up every 10 pumps).
Step 8: With an adjustable wrench, tighten the bleeder and wipe any brake fluid excess.
Step 9: Cover the bleeder with the rubber cap.
Step 10: Put the tire back on.
Attached Images
File Type: jpg 1.JPG (206.0 KB, 92 views)
File Type: jpg 2.JPG (186.3 KB, 94 views)
File Type: jpg 3.JPG (145.3 KB, 94 views)
File Type: jpg 4.JPG (143.0 KB, 94 views)
File Type: jpg 5.JPG (185.7 KB, 90 views)
File Type: jpg 6.JPG (143.3 KB, 90 views)
File Type: jpg 7.JPG (105.7 KB, 88 views)
File Type: jpg 8.jpg (213.3 KB, 90 views)
File Type: jpg 9.JPG (186.3 KB, 89 views)
File Type: jpg 10.JPG (160.8 KB, 88 views)
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Old 03-10-2007, 05:23 PM   #2 (permalink)
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Nicely done man. Good write-up too. Have you noticed any change in brake performance as a result? I plan to do mine this Spring. I bought a power bleeder to do it.
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Old 03-10-2007, 08:22 PM   #3 (permalink)
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Brake Fluid Flush

I didn't feel any difference but that's a good thing 'cause I was afraid I'd screw it up. I went for a drive around the block, tried to do slow breaking a few times then I slammed it hard once just to make sure I still have the power if and when I need it. Here's the pics of the bleeder I got from Autozone which I'll probably return. I also started to follow a DIY pressure bleeder that was posted here but that's when I saw the Autozone item. The parts for the DIY was easy enough to find at Ace Hardware, Home Depot and Autozone. Good luck with yours.
Attached Images
File Type: jpg temp1.JPG (243.4 KB, 86 views)
File Type: jpg temp2.JPG (276.4 KB, 85 views)
File Type: jpg temp3.JPG (307.5 KB, 85 views)
File Type: jpg temp4.JPG (166.5 KB, 84 views)
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Old 03-10-2007, 09:55 PM   #4 (permalink)
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Well done.
A couple of points.
Use a proper 6 or 12point spanner for the bleeder as they sieze up and may round off with an adj spanner.
If there is black crud in the bottom of master cyl try to get it out before bleeding as it can get washed down to the Caliper seals.

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Added to Tech sticky above
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Old 03-11-2007, 06:50 AM   #5 (permalink)
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This is the one I got (Power Bleeder Pro):
Products Bleeders

Can't wait to try it out this Spring. I'm going to swap the brake lines for braided stainless steel at the same time.
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Old 03-11-2007, 09:03 AM   #6 (permalink)
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And remember to pump the brakes befor you drive it.

One of our fitters years ago backed off the ramp into the workshop wall, didnt pump the brakes first
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Old 03-11-2007, 09:41 AM   #7 (permalink)
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SP67

Thanks for the pics, but I'm not too sure about something here. Did you mean to say 'repeat steps 4 - 10 for the other 3 wheels'?

Otherwise there's quite a lot of old fluid still in the system.
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Old 03-11-2007, 08:44 PM   #8 (permalink)
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Brake Fluid Flush

Keyhole,

Sorry, you're right. Repeat steps 4-6 for each tire. If you only bleed one line, the other three lines will still have the old fluid even though your master cylinder is full of new fluid. Good catch.
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Old 03-13-2007, 12:34 PM   #9 (permalink)
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another intresting product to help bleed brakes Speed Bleeder Bleeding Brakes Bleeding Motorcycle Brakes Automotive Bleeder Screw Brake Bleeder
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Old 03-14-2007, 01:42 PM   #10 (permalink)
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Quote:
Originally Posted by Kirill
Have you used these? They sound like a pretty elegant solution to bleeding the brakes.
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