brake bleeding - anyone use a vacuum pump ?

[frugalangler]

..... one adapter that fits many but not all master cylinders......

and that is part of my problem, surge masters are buried inside the sliding coupler, and they don't have a typical threaded cap, so there's not a clean method of attaching one. The typical surge cylinder cap is a rubber plug that press fits into the hole atop the reservoir.

 

[George2615]

and that is part of my problem, surge masters are buried inside the sliding coupler, and they don't have a typical threaded cap, so there's not a clean method of attaching one. The typical surge cylinder cap is a rubber plug that press fits into the hole atop the reservoir.

For your trailer bleeding I think you'll need to stay with a suction bleeder. My trailers are all electric so my queries pertain to automotive. I like the one Mace posted. There are a few different types like that available for under $25.

 

[TractorGuy]

It won't gravity bleed?

 

[jaxs]

It won't gravity bleed?

I've heard of gravity bleed but never seen it done,can you post instructions for single and dual master cylinders?

 

[Kernopelli]

My son's Silverado can be a bugger to bleed. I have had pretty good results and longevity out of Harbor Freight's hand vacuum bleeder Brake Bleeder and Vacuum Pump Kit

 

[truckdiagnostics]

You want to pressure bleed with about 10 psi going into the master cylinder. this method keeps the master full, allows for flush of the brake system and bleeds abs module. Only way to go when doing complete brake line replacement.
Home of Motive Products
the above is what i use, pain to clean only use it when replace brake or major components.
Eastwood 3 Piece Brake Bleeding Wrench Set
use the above bleeder wrench set. keeps you from making a mess. says you can use for one man bleeding but not sold.

 

[MinnesotaEric]

I'm considering setting up a vacuum pump for bleeding brakes in a one-man scenario. I've got a 1-way hydraulic valve designed to go between a bleeder valve and a collection bottle, with the bottle suctioned by a small refrigeration style vacuum pump to pull brake fluid through the system from the master cylinder.

This would make it a whole lot easier to bleed surge trailer brakes, something I'm asked to help with a lot w/ my boating friends.

The biggest issue I can foresee if sucking the master dry accidentally, but looking for experiential recommendations from someone that's been there.

Been using vaccuum pumps to bleed brakes since 1988.

 

[pmsmechanic]

I built my own pressure bleeder out of a recycled propane torch tank. A piece of pipe to fill it with and then use a pipe plug to close it off. Drill a hole for a rubber tire valve and then I brazed in a piece of pipe that goes to the bottom of the bottle. A needle valve got threaded to that with a hose fitting on the other side of the valve. I use a piece of hose held onto the brake bleed screw on the slave cylinder and I can run fresh brake fluid right up to the master cylinder. I use a turkey baster to remove the excess brake fluid from the master cylinder.

I'm careful how much air pressure I put in as I have no idea when this could explode. It lets me bleed brakes by myself if I need too.

A 20 lb bottle of the same build as above is used to fill rear differentials on 3 tons and tandem trucks with 80w-90 oil. It sure beats pumping the oil. This version has a safety valve as the neighbours also use it to fill pivot gear boxes with gear oil

 

[randyswanner]

mighty bac hand pump is plenty and can be purchased for about 30$ . one side of the bottle has a dip tube, put enough fluid to cover the dip tube and that eliminates the need for a check valve( did tube has to be on the side coming from the wheel, with vacuum pulled from top of bottle) there are even cheaper generic pumps I like the mighty vac . l let one get ruined by leaving in laying out in the Texas sun and.heat distorted the housing. take care of it and it will easily pay for itself

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[randyswanner]

the mighty vac will easily pull 30 lbs vac if you had trouble pulling enough vacuum you probably got a leak in your hosing somewhere