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Messages - oljeeptek

2
Suspension/Steering / Brake Pump runs all the time
Sorry, I've been swamped here.
It looks like you made the correct initial diagnosis with the switch.

Let us know how it works out. Teves is a very simple system actually, but the parts are $$$ and it's tough to work without the guage and a valve actuator. (It was also used by GM for it's Hydroboost system and I've been thinking of adapting one to my 69 Bronco but that's a whole 'nother can o worms.) Good luck anyways!

Hypostang that is a good link with a lot of great info.
3
Suspension/Steering / Brake Pump runs all the time
Now I'm hogging the thread, sorry!

Someone elsewhere suggested that a completely ruptured bladder in an acspoogeulator might allow it to fill with air causing a pump run-on. I have never seen this happen in the field myself, but theoretically it would make sense. You could invert it and fill it with brake fluid prior to reinstalling to check for this. l would probably take a half pint of fluid in this case. I assume your replacement was used?

By the way, what was your original symptom that caused you to replace the pressure switch?
4
Suspension/Steering / Brake Pump runs all the time
Ebay currently has a Breakout box listed at about $30 including shipping. Might be what you need! Search "Teves J-38716". Are we allowed to post an actual link on here?
5
Suspension/Steering / Brake Pump runs all the time
One more side note; make sure you don't use DOT 5 brake fluid. It's silicone based and it actually is compressible and will give you all kinds of fits with mushy pedal, pressures etc.
6
Suspension/Steering / Brake Pump runs all the time
Fluid flow from the pump will normally be low volume, it doesn't gush out, but it can develop very high press when pumping against resistance. It stores this energy in the acspoogeulator.

If you have clean, clear fluid coming out of the acspoogeulator hole, you're really at the point that a pressure gauge needs to be screwed into the acspoogeulator hole, or the pump output, to check pump output pressure.

The issues here are that the thread size and pressure dictate a specific gauge.  You need one capable of measuring 2000 psi. You might be able to rent one from a local parts house, like O'Reilly or Autozone etc. Ideally also you need to "purge" or cycle the solenoid assembly while the pump runs to clear it, but try bleeding it and if there is brakes enough to drive it safely, do some hard brake stops in the dirt. I believe some aftermarket scanners can perform this function too so check with your tool rental shop to see if they have something that can help you with this. (I fortunately had the luxury of the factory tools so I'm not able to direct you which scanners to look for but I would try to get hands on OTC, MPSI, or Snap-on if you can.)

You are either now still fighting the solenoids or the pump went Kaput.

FYI, when an acspoogeulator goes bad, it causes the pump to shut off within a couple seconds with no assist reserve. Normally the pump should run 30 second to a minute after pumping the pedal 4 or 5  times.

Loaded87IROC- your description sounds like your volume output is a little lower than I'd expect.

 I forgot to look for my TEVES info last night. I'll try to look tonight.
7
Suspension/Steering / Brake Pump runs all the time
Exactly. Pump the pedal until it is hard as can be- no assist left at all. Do this with the key off (completely out of the ignition cylinder if you want).

Remove the acspoogeulator.

Then turn the key on and let it flush fluid out of the Acspoogeulator hole. This should only take a few seconds, maybe up to 30 I suppose.

Turn the key off and reinstall the acspoogeulator.

Turn the key on and finish bleeding as suggested above if necessary.
8
Suspension/Steering / Brake Pump runs all the time
I think in this case we are looking at an air lock in the pump, like it's lost it's prime, if you will. It will be a lot easier on both your leg, and the pump to burp it at the acspoogeulator passage as it is before the rest of the system. The fluid volume should be about the same as you see at the bleeders.

What you don't want to do is to have to push all that air through the whole system if you don't have to. Once the acspoogeulator passage is bled out then continue with bleeding as hypostang above suggests (FYI, that's a great way to bleed the rear brakes circuit in general- great link!). It should go quickly then.

If nothing comes out of the acspoogeulator passage, then there is an inlet blockage to the pump or it's likely toast.
9
Suspension/Steering / Brake Pump runs all the time
Forgive me, but I am not sure what the "NATO writeup" refers to.

You can use a scan tool to cycle the pump and valves, but most people don't have access to that easily. You can also run it through some ABS cycled hard stops if the abs light is not on and you have enough brakes to force a lockup situation on soft ground like dirt etc. Alternatively, you could try the hillbilly method- pumping down the pedal (assist pressure) with the key off to dump any acspoogeulator pressure, remove the acspoogeulator and turn the key on for a very short time to let it pump fresh fluid out of the fluid passage to the acspoogeulator. The pump can put out an extremely high pressure, but it's not a huge volume so it shouldn't make too big of a big mess; just don't stand over it. Put the acspoogeulator back on and see if the pump builds pressure. You can rinse off brake fluid with plain water when you're done. You might get it burped out enough to get the pump off until you can drive it and do some ABS stops.

Short of cycling the controllers with the scanner I don't know an easy way to bleed it. I think I still have a TEVES brake system guide in my old dealer tech info stash from my Oldsmobile days. I'll see if I can find it in case I'm missing anything.
10
Suspension/Steering / Brake Pump runs all the time
If the pump won't shut off, you have either air trapped in the system, a control valve stuck open (sometimes you can see the fluid circulating around the master reservoir), or a fried pump. They don't like to run dry. Did the fluid look metallic at all?
11
Suspension/Steering / Calling all Teves brake system experts!
Hi all.

The acspoogeulator is just a small fluid tank with an air (nitrogen actually) bladder inside to give the system some reserve pressure. When it goes bad you get a very quick cycle pump, and no assist after 1 pedal stroke. You lose capacity since you can't compress a liquid, thus the compressible bladder. The acspoogeulator doesn't do anything else and has no moving or mystical parts in it. (Works just like the water tank on a well system in a house.)

It does hold up to 2000psi when loaded, so just make sure to pump down any pedal assist and leave the key off when removing it and you'll be fine. The factory always said 50 pedal strokes, but experience showed that you just want a rock hard pedal.
12
Electrical Tech / Fuel pump circuit
Hi all,

Don't forget that the oik press switch can also keep the pump running while there is oil press. (Or a sticking switch).