Vacuum pump for brakes?

[Blue85]

But if you get a good pump or two from the booster, then the engine made enough vacuum at some point.

I once vacuumed my A/C system down with a pump made from an old dehumidifier. A compressor like that can pull a lot of vacuum. Wouldn't it be cool to do a modified York setup to give both vacuum and compressed air? It requires some extra valves and relays, but could work.

 

[6.2Blazer]

Weird, I though the M1008's ran off a vacuum booster and a pump.

Every one I have ever seen had hydroboost (p/s pump provided the power assist). Heck, not even sure M1008's normally had the vacuum pump since they didn't have any accessories, that I know of, that needed it.

 

[Blue85]

You need it for the heater controls. Maybe the pump is a simpler solution than a different kind of system?

 

[sweetk30]

helping a friend pin point no prakes today on his new to him van we found a bad vac pump.

got me thinking of you. stop it not that way

its a 98 ford e-350 van with 7.3 p/s motor.

its got a serp belt drivin vac pump for the vac brake system. it bolts on the outside of the motor and real easy to get to.

might be a idea for ya to fab a bracket to run it on yours

fyi new reman pump we priced was around 120 bucks.

 

[sweetk30]

got thenew vac pump in the van for him today.

at idel in park it pulls a solid 25" vac no problems. and the mounting is flat for the 3 tabs and also real easy to make a plate for if you wanted to mount on a diffrent motor .

and in this aplication its got a smoth pully to run on the back side of a serp belt. but the shaft size looks about the same as a std p/s pully thats pressed on.

also just takes a 3/8 hose from the line out of the pump to a manifold and from there it gets dist out to booster and other needs.

so in short if you wanted a easy vac pump and not electric i would look in to this setp.

napa brand reman pump # NVP 641024

napa site listed delphi new unit # DEM NLVP4342

few pics

 

[CherryK5]

Pretty sweet, only problem is im trying to avoid losing brakes when the motor dies. otherwise i would be all over that, 25" is wayyy more than enough

 

[Fordum]

I just had a thought. I have to be kind to it, its in a strange place.......

But, from what I remember of this thread, we had pretty much decided that what you have should work, you just need a vacuum switch to turn it on and off.
And those are not cheap.

But, if you are reasonably handy, then you should be able to make one fairly easily.

Cars are chock full of vacuum actuators. They move plenum doors, open valves, in some cases lock doors.
All you need is the actuator of your choice, a switch of some kind and a spring.

I would go with one of the smallest surface area actuators you can find, so the spring does not have to be too big.
Mount the switch so that when the vacuum pulls in the actuator, it opens the switch.
Then, mount a spring with a tension adjustment so that it works against the vacuum.
Hook it into the system, turn the pump on, and after it has maxed out, adjust the spring until it just turns off.

Some actuators have springs on them to reverse them when the vacuum goes away, just add to the tension.

 

[CherryK5]

Haha. What was the strange place thing? I didn't get it.

And I priced it out and decided to put the money onto my 5.3/4l80e project.
I'll just deal with it for the time being. I have a jamar hand brake going to the rear brakes right now and that seems to work nicely.

 

[Fordum]

The thought was in my head, which is about as strange a place as they come. Plus it had to be lonely, didn't have much company.........

As for your being handy, I just assumed you were.
I know I am.
I live by the motto "If the women don't find you handsome, they should at least find you handy...."