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Author Topic: Vaccum pump  (Read 4217 times)

August 20, 2009, 10:45:00 pm

4wheeler

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Vaccum pump
« on: August 20, 2009, 10:45:00 pm »

How much vaccum should the pump on a 1.9TD make?
Mine doesn`t produce much.  not even enough for the brake booster which is the only thing it runs now..

Any ideas?
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Reply #1August 20, 2009, 11:12:41 pm

Vincent Waldon

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Re: Vaccum pump
« Reply #1 on: August 20, 2009, 11:12:41 pm »
Round about 20" of water... same as a gasser manifold makes, so that they can use the same brake booster and cruise control activators.  ;)
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Vince

Edmonton, Alberta, Canada
2001 silver TDI Jetta Malone Stage 1.5 , 2001 blue TDI Jetta SBIII 216s Malone Stage 3, 1970 Bay Window bus

Gone but not forgotten: 1969/1971 Beetles, 1969/1974 Westies, 1979 Rabbit, 1986 TD Jetta, 1992 gas Jetta, 1994 TD Jetta
Reply #2August 21, 2009, 02:21:30 am

fatmobile

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Re: Vaccum pump
« Reply #2 on: August 21, 2009, 02:21:30 am »
20" hg,.. ish
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Reply #3August 21, 2009, 03:40:05 pm

4wheeler

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Re: Vaccum pump
« Reply #3 on: August 21, 2009, 03:40:05 pm »
Well thats settles it,  My pump is pooched.
IS there any way these pumps can be rebuilt?  and how?
How much is a new one and the best place to get one?
Is there any tricks to it when changing it out?
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Reply #4August 21, 2009, 04:01:18 pm

Rabbit on Roids

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Re: Vaccum pump
« Reply #4 on: August 21, 2009, 04:01:18 pm »
i think you might be able to get new vanes for them. but those are the only moving pieces in there.
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Reply #5August 21, 2009, 04:49:59 pm

4wheeler

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Re: Vaccum pump
« Reply #5 on: August 21, 2009, 04:49:59 pm »
Ummmm.... I have no idea. Never had the motor apart.
Is there a how to anyone can hook me up with on the site?

I`ll have to tear it apart and check it out.
My oil pressure is there 15psi ish on idle.
Up to 40psi or so on acceleration.

So possible gumming up on the vaccum pump or ports that allow oil through.
Maybe bad oil pump?  Are these motors  known for pooched oil pumps?





Quote from: libbybapa on August 21, 2009, 04:21:42 pm
How's your oil pressure?  Is the little seal fitted to the inside of the vac pump gear to seal around the oil pump shaft?  Is the oil pump bushing installed correctly?  They depend on a constant supply of oil up through the center shaft of the pump.  Without it, they don't make vacuum very well at all. 
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Reply #6August 22, 2009, 01:30:09 pm

Rabbit on Roids

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Re: Vaccum pump
« Reply #6 on: August 22, 2009, 01:30:09 pm »
oil pumps 99% of the time never go bad on these.
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Reply #7August 22, 2009, 03:53:18 pm

4wheeler

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Re: Vaccum pump
« Reply #7 on: August 22, 2009, 03:53:18 pm »
So where is the pressure control valve? Can I cclean that out while I'm cleaning the pump?
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Reply #8August 23, 2009, 12:39:54 am

Rabbit TD

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Re: Vaccum pump
« Reply #8 on: August 23, 2009, 12:39:54 am »
Quote from: 4wheeler on August 22, 2009, 03:53:18 pm
So where is the pressure control valve? Can I cclean that out while I'm cleaning the pump?
I think he means the pressure control valve that's in the oil pump, not the vacum pump.  It doesn't have one.
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Reply #9August 23, 2009, 10:35:03 am

4wheeler

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Re: Vaccum pump
« Reply #9 on: August 23, 2009, 10:35:03 am »
I took it all apart, seals are good. Veins move freely however the veins are pitted pretty badly on the edges there it seals to teh case.
Where is the best place to get ahold of the 3 veins new?

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Reply #10August 23, 2009, 11:29:33 am

Rabbit on Roids

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Re: Vaccum pump
« Reply #10 on: August 23, 2009, 11:29:33 am »
there should be 4 vaines in there.
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