DIY power bleeder

[Ray S]

I used a professional $300 power bleeder once and then just had to make my own. Small HD garden sprayer and a few odd parts. I was worried that the pump seal might not like DOT3 but it turned out to not be the case.
The RV has 7 brake bleed ports and it is a LOT easier than the old pump and fill and better than a vacuum type.
I just buy a fresh quart of Prestone 3 and pump it all through whenever needed.
This is for the old Dodge single system - very important to maintain.

 

[Silver]

So... you prime the hose then hook it up?

 

[Ray S]

So... you prime the hose then hook it up?

yes, not critical since it just dumps into the reservoir, same as the Branick I used

Branick G300 Pressure Brake Bleeder

Diaphragm-type bleeder keeps fluid & air separated 4-gallon reservoir large capacity for less frequent fills includes most common adapters 29G & 45G9.

www.mile-x.com

I just saw this one for cheap

VEVOR 2L Brake Fluid Pressure Bleeder, Brake Fluid Replacement Tool Set, Corrosion-resistant Brake Oil Replacement Kit with Pressure Gauge and Relief Valve | VEVOR US

Discover VEVOR 2L Brake Fluid Pressure Bleeder, Brake Fluid Replacement Tool Set, Corrosion-resistant Brake Oil Replacement Kit with Pressure Gauge and Relief Valve, Easy Fluid Dispensation and Wide Application at lowest price, 2days delivery, 30days returns.

www.vevor.com

but you still need the proper thing to fit over the cap if it doesn't fit yours

 

[Brons2]

I used a professional $300 power bleeder once and then just had to make my own. Small HD garden sprayer and a few odd parts. I was worried that the pump seal might not like DOT3 but it turned out to not be the case.
The RV has 7 brake bleed ports and it is a LOT easier than the old pump and fill and better than a vacuum type.
I just buy a fresh quart of Prestone 3 and pump it all through whenever needed.
This is for the old Dodge single system - very important to maintain.

View attachment 123908

Is that your RV in the profile pic?

 

[twouvakind]

yes, not critical since it just dumps into the reservoir, same as the Branick I used

Branick G300 Pressure Brake Bleeder

Diaphragm-type bleeder keeps fluid & air separated 4-gallon reservoir large capacity for less frequent fills includes most common adapters 29G & 45G9.

www.mile-x.com

I just saw this one for cheap

VEVOR 2L Brake Fluid Pressure Bleeder, Brake Fluid Replacement Tool Set, Corrosion-resistant Brake Oil Replacement Kit with Pressure Gauge and Relief Valve | VEVOR US

Discover VEVOR 2L Brake Fluid Pressure Bleeder, Brake Fluid Replacement Tool Set, Corrosion-resistant Brake Oil Replacement Kit with Pressure Gauge and Relief Valve, Easy Fluid Dispensation and Wide Application at lowest price, 2days delivery, 30days returns.

www.vevor.com

but you still need the proper thing to fit over the cap if it doesn't fit yours

Whatever you do, avoid Vevor. The 1.5l fluid extractor I bought from them ended up in the trash.

 

[Ray S]

Is that your RV in the profile pic?

yes, and sig

 

[Ray S]

Whatever you do, avoid Vevor. The 1.5l fluid extractor I bought from them ended up in the trash.

good to know! I took a chance with the $12 HD pump sprayer

Chapin 2 l Multi-Purpose Handheld Sprayer 10031 - The Home Depot

Tackling overgrown weeds in your flowerbeds or adding pesticides to your evergreens. Our 10031, 2 l, multi-purpose sprayer helps you keep your tasks in check. Homeowners and professionals can keep it for outdoor and indoor use and it's a great tool for general cleaning.

www.homedepot.com

 

[Schurkey]

"Garden-sprayer" brake bleeders do not separate the hygroscopic brake fluid from the humidity in the air used to pressurize them. The fluid is partially-contaminated from the time it's pumped-into the brake reservoir.

GM service manuals specifically warn against this type of brake pressure-bleeder.

A "real" brake pressure bleeder--like that Branick (and others)--uses a rubber diaphragm to separate the fluid from the pressurizing air.

 

[Marcozi]

"Garden-sprayer" brake bleeders do not separate the hygroscopic brake fluid from the humidity in the air used to pressurize them. The fluid is partially-contaminated from the time it's pumped-into the brake reservoir.

GM service manuals specifically warn against this type of brake pressure-bleeder.

A "real" brake pressure bleeder--like that Branick (and others)--uses a rubber diaphragm to separate the fluid from the pressurizing air.

Good points.

 

[Ray S]

"Garden-sprayer" brake bleeders do not separate the hygroscopic brake fluid from the humidity in the air used to pressurize them. The fluid is partially-contaminated from the time it's pumped-into the brake reservoir.

Very true.
I had pumped the whole quart(s) through within minutes of opening and filling though, and it's very dry here.
Always ill advised to use an old half-used bottle, or leave a bottle or the cap open for long. I used to use welding gas to floor containers but the tank is out of hydro.