Motive Brake Bleeding

Fabbed up a brake rez pressure cap out of a rubber plumbing cap I had laying around. Also had a v-ball/ b-ball little pump that accepts needles/various inserts. Tried a needle which works to pressurize by piercing through the top as my first proto-type. Switched over to what I think is going to be more substantial (see pictures). Total cost $4 for the needles/barbs and $2 for rubber cap.

Tested the fit and it holds pressure with a few pumps on the brake rez, but didn’t over do it. Put some Fuze on it for extra measure after the pressure test. I like its modular size. Easy to work it.

What is the next step to golden delicious clean DOT3 fluids running through my lines?

Will this thing work? If it does I suppose a bicycle pump would work, as well.

 

Cool. I like the bicycle pump idea. It isn't going to take a lot of pressure. Using an air hose to a compressor is begging for a clusterfdfk. Only thing missing is some kind of pressure gauge or indicator.

Pump it up until you feel slight resistance then go open a bleeder (RR will work). Open the bleeder slow, with the wrench still in place until you see what to expect. Objective is to get a slow, controlled flow down a clear polyvinyl tube into your catch vessel.

One disadvantage is only having the small MC reservoir as compression volume. Using the Motive bottle gives more compression volume (and a pressure gauge). Expect your pressure to go away quickly. Fluid forced out at the bleeder will be a fraction of the MC volume before it stops flowing. May take a few trips to the MC to get a wheel bled. Keep a sharp eye on the MC level.

 

Like JohnL says, you'll be limited by the small volume of pressurized air the bicycle pump creates. You can buy a lawn sprayer from home depot that will work better. Then you may want to invest in a psi gauge since your cap has the worm clamp, you could over-pressure the reservoir and split the plastic seam or blow out the plastic to metal seals/o-rings. Using the Toyota cap alone it acted as the fail-safe. I know my Motive unit took about 25 pumps to build to 8psi.

I considered making my own, but once done I think I was only saving about $20 so I just ordered the motive unit.

 

I have the same setup and attempted to flush the whole system with DOT4 last year and darn near no fluid comes out when I crack a bleeder, no matter how long I let it sit. What am I doing wrong?

 

PHM would be proud.

 

Needs more Bosch 5.1

 

Sorry can't help you out yet since I have the items sitting in my garage for the longest time. I told myself that I'll bleed the brakes this year. Hopefully I stop procrastinating and actually do it. I'll let you know how it goes for me.

Maybe try this video. See if you're doing the same thing as this dude.
https://youtu.be/xAK_nuBkxz0

 

Great thread. Thanks for reviving. Will need this info soon.

 

Just bleed my brakes today. Not sure if I got all of the old fluid out since it was super hard to tell from the color and I did not see any air bubbles come out. I used a turkey baster to squeeze out the old fluid in the reservoir and then bled about 16 ounces from all 4 brakes. Most of the 16 ounces are the rear brakes. Once I pressurized the reservoir, the brake fluid started to bleed out when I loosened the bleeder valve on the brake calipers. I would go back to the reservoir to check brake fluid level and top it off whenever I changed to do the next caliper. The youtube video I linked above helped me. I didn't remove the wheels like the video, I was able to get to all 4 wheels by crawling under the car. The front wheels were a little tight but doable.

 

I may try it again with removing as much old fluid as I can first, then adding fresh. I plan to fill the power bleeder with fluid so I don’t have to worry about running it dry. I also have the same catch bottle

 

Don't forget to bleed the rear porportion valve.

 

Mine is a 2nd gen…we don’t have those far as I know

 

Bumping this old post. Luis, which Motive model is this? Why is the OP having to make a special adapter. It looks like you have one that works for our trucks.

 

I had the European kit which was $50 but like many things has gone up a bit in price thanks to 2020. I uses it on the GTI and it worked well on that with the threaded adapter.

The adapter for the truck was this part https://www.motiveproducts.com/prod...ic-adapters-adapters-classic-marine-universal
I can't say it's fun to use, its hard to get it on there correctly but once you get it the bleeder works. On the inside of this adapter is kind of a conical gasket that has to be centered perfectly on the reservoir or else when you start pumping it will slip and spray.