fuel pump pre-load diaphram.

cncwhiz · Posted: Tue Oct 16, 2007 2:44 pm Post subject: fuel pump pre-load diaphram.

I read about doing this on a later model fuel pump "40hp". Does this need to be done for the 36hp fuel pump? If so does anyone know how much the 36hp pump need to be pre-loaded?

TIA

tasb · Posted: Tue Oct 16, 2007 8:53 pm Post subject:

Please do a search you WILL find your answer. This topic has been covered many times.

djkeev · Posted: Wed Oct 17, 2007 4:22 am Post subject: pump

Here i a helpful link

http://www.thesamba.com/vw/forum/viewtopic.php?t=107797&highlight=preload

FYI check the pump plunger rod for proper length also.

You might consider purchasing the proper bentley manual for your car, it would really help a lot instead of flying blind and maybe making some serious mistakes when you work on the car.

Dave

cncwhiz · Posted: Wed Oct 17, 2007 12:28 pm Post subject:

That is the setup I was looking at. This will work fine for my other fuel pumps, but what about 36hp's? Does anybody have a picture of the real tool? It the 14mm pin is sqiare or round on the end, this can change the pre-set distance?

EverettB · Posted: Wed Oct 17, 2007 11:02 pm Post subject:

Most of them can be seen at
http://www.thesamba.com/vw/archives/info/tools4.php
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cncwhiz · Posted: Thu Oct 18, 2007 8:07 am Post subject:

Thanks Everett. The Gage for the 36hp looks to be longer than the verticle pumps? Is there a gage length for the 36hp? It looks to be longer than 14mm?

EverettB · Posted: Thu Oct 18, 2007 9:21 am Post subject:

My 36hp gauge is 35mm.
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cncwhiz · Posted: Mon Nov 26, 2007 10:06 am Post subject:

I am making a gaging fixture for setting the diaphram. I have modeled the later model "upright" setup. I want to build the prload setup for the 36hp on the same fixture plate. This setup seems like it would be better if I put it on a 90 degree plate. This will allow the pump to stand up and not lay down? I also notice that in the pics of the rebuild I may need to use longer studs to be able to move the housing around to assemble the diaphram?


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