Last weekend, I decided to do brake fluid exchange on my 5.0 Cummins. I believe this process is the same for the gasser as well as any other cars/trucks.
I used Lucas Synthetic DOT 3 to do the flush. I also bought the handpump transfer pump to make it easier. Sorry, I did not take any pictures at all.
Autozone Transfer Pump
1. Use the transfer pump to pump as much brake fluid out of the reservoir as you can
2. Till you can't pump out any more fluid, top off the reservoir with new DOT 3 brake fluid
3. Crack open the bleed valve (I started with left-front, right-front, right-rear, left-rear), hook 1/4" tube to the bleed valve on one end and the other end of the tube into a water bottle or some container and start to press-release brake pedal. I bought Kitchen Soap Dispenser w/ check valve to prevent any air coming back to the brake line via bleed valve
4. As you press-release, old fluid start to come out in dark clear yellow.
5. Also keep an eye on the fluid level in the reservoir because you don't want to empty it and air starts to get in the line. When the level goes a bit below the Min line, top it back off
6. Till you see clear fluid starts to come out to the tubing line, stop pumping and close the bleed valve. Move on to the next one, start from #3 - #6 till you are all done.
7. Once all 4 had bled out with new and clear DOT 3 brake fluid, fill the brake reservoir upto Max and you are done. Properly dispose the old brake fluid.
Note: don't get the brake fluid spilled onto the paint as it will eat off the paint. Buy a bottle of Gunk degreaser to get ready as some of the brake fluid will leak out of the 1/4" tube from the bleed valve to the brake caliper and wheel, spray the degreaser and shoot water to thinner the fluid, eventually it will wash the brake fluid off the wheel.
I used Lucas Synthetic DOT 3 to do the flush. I also bought the handpump transfer pump to make it easier. Sorry, I did not take any pictures at all.
Autozone Transfer Pump
1. Use the transfer pump to pump as much brake fluid out of the reservoir as you can
2. Till you can't pump out any more fluid, top off the reservoir with new DOT 3 brake fluid
3. Crack open the bleed valve (I started with left-front, right-front, right-rear, left-rear), hook 1/4" tube to the bleed valve on one end and the other end of the tube into a water bottle or some container and start to press-release brake pedal. I bought Kitchen Soap Dispenser w/ check valve to prevent any air coming back to the brake line via bleed valve
4. As you press-release, old fluid start to come out in dark clear yellow.
5. Also keep an eye on the fluid level in the reservoir because you don't want to empty it and air starts to get in the line. When the level goes a bit below the Min line, top it back off
6. Till you see clear fluid starts to come out to the tubing line, stop pumping and close the bleed valve. Move on to the next one, start from #3 - #6 till you are all done.
7. Once all 4 had bled out with new and clear DOT 3 brake fluid, fill the brake reservoir upto Max and you are done. Properly dispose the old brake fluid.
Note: don't get the brake fluid spilled onto the paint as it will eat off the paint. Buy a bottle of Gunk degreaser to get ready as some of the brake fluid will leak out of the 1/4" tube from the bleed valve to the brake caliper and wheel, spray the degreaser and shoot water to thinner the fluid, eventually it will wash the brake fluid off the wheel.
