Serpentine pas pump, won't bleed/no pressure?

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ihatesissycars
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Post by ihatesissycars » Mon May 28, 2007 6:42 pm

What other union?

If you mean the one form the bottle then no, it'd just pour out. The pipes are definately on the correct way.


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Post by ihatesissycars » Mon May 28, 2007 8:33 pm

Heres where the bottle is.

Image

Image

Pointing directly down onto the pump.

Here's the pump.

Image

The top union is the inlet, this is now pointing the other way on the one on the car, this is the one fed by the bottle.

The bottom union is the outlet.

Heres the inards of the old pump, after looking at this i started thinking. The slits in the round part that rotates with the pulley house little pieces of steel which just sit in the slits in the round part. They can go in and out of their slots as they please as they litterally just sit in there, notice how they're all recessed? Could they, when combined with oil be suck inwards meaning they can't come out to move fluid and then generate pressure in the eliptical (is that the correct word?) housing they're in? If so do i just need to give it a rev?

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Post by ihatesissycars » Mon May 28, 2007 9:25 pm

Does anyone have any piccies of the pump fitted to a rangie?
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Post by JSF55 » Mon May 28, 2007 9:27 pm

Thats wot i know as a sliding vane pump, as log as they are all free to move and theres no excessive scoring on the vanes and body it should work fine !
So thats where it went !

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Post by JSF55 » Mon May 28, 2007 9:31 pm

Here's the pump.

Image

The top union is the inlet, this is now pointing the other way on the one on the car, this is the one fed by the bottle.

The bottom union is the outlet.

are u sure the pump doesn't have to be mounted a specific way to allow it too self purge ??
So thats where it went !

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Post by ihatesissycars » Mon May 28, 2007 9:31 pm

They are free to move just very slickly and slowly due to the oil which if it were holding them inwards via suction then i guess they couldn't fly out to do their job. Theory at least.

I've just been looking at something i've been sent and it shows the pump in a different orientation, as if it were rotated clocwise 180 degrees.
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Post by ihatesissycars » Mon May 28, 2007 10:11 pm

False alarm, it is mounted correctly, i didn't think it could be mounted anyother way than what it is but it was worth checking, you can just about make it out in this puic but its mounted the same way as mine.

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Post by JSF55 » Mon May 28, 2007 10:25 pm

So with that sorted, wot oil are u running in it?
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Post by ihatesissycars » Tue May 29, 2007 6:52 am

Dexron 3.
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Post by JSF55 » Tue May 29, 2007 8:24 am

That should be fine ..... have a read here somei nteresting stuff .... bleeding the system, http://www.pirate4x4.com/tech/billavist ... ndex3.html
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Post by ihatesissycars » Tue May 29, 2007 10:04 am

Good site that cheers!

It got me thinking about this astra pump again, i'm going to give that a go i think. Its the same fittings in regards to pipework that i already have and its simple enough to rig up some wiring to see if it works.

Watch this space!
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Post by ihatesissycars » Tue May 29, 2007 4:56 pm

Thats after one last attempt with the serp pump. One of the guys here has said there's a few vauxhall pumps that will only bleed up and build pressure if they're first run completely dry and with some decent revs to fling the vanes out inside the pump so i've completely dried out my old pump and the vanes now move very freely under their own weight so if this doesn't work nothing will!
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Post by ihatesissycars » Wed May 30, 2007 6:53 pm

Hmmm, well, i fitted the cleaned out pump with mixed results. At standstill and idle no difference but when pootling around it was much much lighter, wether that was because i was simply moving or i was getting assistance from the pump i don't know, my gut says pump.

Now, I can either jack this in or go for the elctric pump. I have managed to find an idler to go in place of the pump so that i don't have to faff around with belts and knurling the water pump pulley. It simply bolts onto the pump housing and has a shaft and bearing in it with pulley mount to which you bolt the pulley onto. It looks no different once fitted than if you had the pump still there, its from a tvr.

I have some of the electric pump specific fluid know at work as "green s**t" and the pipe unions are the same.

Shall i go for it or pursue the serp pump?
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Post by ihatesissycars » Fri Jun 01, 2007 1:07 pm

Electric power steering pumps RUUUUUUUUUUULE!!!!!!!!!!!!!!!!!

4 wires, two hoses and one bracket later and its done! Works a treat too!
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Post by katanaman » Fri Jun 01, 2007 2:01 pm

Nice one Gav glad you got there in the end.

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