Re: Anybody have a vacuum pump?

It's kind of a chicken/egg thing.  The oil pump pushes oil from the shaft
bushing up the hole in the oil pump shaft, up through the shaft of the vac
pump where it spews it out into the rotary vac pump.  If there is an oiling
issue, the oil pump shaft bushing is over worn or the seal in the bottom of
the vac pump is shot, the oil will not pump up into the vac pump properly
and could cause the pump to seize.  Of course, once the pump seizes, the
oil pump will no longer turn, but lack of oil would be the obvious cause of
vac pump seizing.


On Fri, Nov 21, 2014 at 2:00 PM, Trav . <[email protected]> wrote:

>  My oil pressure dropped because the vac pump was locked solid causing
> the intermediate shaft to slip on the timing belt and not turn the oil pump
> to create the oil pressure. I changed the belt shortly after as well.
>  Travis
> ------------------------------
> Date: Fri, 21 Nov 2014 13:30:58 -0700
> Subject: Re: [Vwdiesel] Anybody have a vacuum pump?
> From: [email protected]
> To: [email protected]
> CC: [email protected]; [email protected]
>
>
> The vac pump and oil pump slot/tab IS centered.  The oiling hole that
> supplies the oil to the vac pump is usually drilled off center in the oil
> pump shaft and might make the tab appear offset, but the tab is centered
> and will work perfectly fine either way it is inserted.
>
> Are you sure the oiling system is working correctly?  Was the seal in the
> bottom of the vac pump gear bad?  Oil pump bushing in the block?
>
> On Fri, Nov 21, 2014 at 1:10 PM, Trav . <[email protected]> wrote:
>
> I have a couple spares actually if you need one of that style. I had one
> lock up on me after about 30 miles and looked like that then. I only
> noticed from the oil pressure droping to zero. I still had the old pump in
> the back so I swapped back over untill I got another pump in there-still
> running fine since.
> Travis
>
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