Alpha 1 trim pump. Prestolite HVLP

[todster]

I have the prestolite high volume low pressure pump. It has the manual release valve on the bottom and 2 lines.
1) What is the real part number for this and what part number for the cap and brushes?
2) If I buy an oildyne unit, will it plug and play or will it need to be adapted?
3) Different topic but have an old #1 drive for a spare. The prop nut threads are course not fine. It has a roughly 1/4" spacer built into the shaft. Using the original bushing does not work with newer props. I bought the spacer and washer per the manual and it is still to long. The 1/4 inch spacer looks like it is part of the shaft. Is it or do I need a different adapter?

Thanks
Todd

 

[Bondo]

Re: Alpha 1 trim pump. Prestolite HVLP

I have the prestolite high volume low pressure pump. It has the manual release valve on the bottom and 2 lines.
1) What is the real part number for this and what part number for the cap and brushes?
2) If I buy an oildyne unit, will it plug and play or will it need to be adapted?
3) Different topic but have an old #1 drive for a spare. The prop nut threads are course not fine. It has a roughly 1/4" spacer built into the shaft. Using the original bushing does not work with newer props. I bought the spacer and washer per the manual and it is still to long. The 1/4 inch spacer looks like it is part of the shaft. Is it or do I need a different adapter?

Thanks
Todd

Ayuh,... Yer trim pump is off an ole Outboard Merc....

'n yer old MC-1, is a Real Olddie,... that flange comes off to reveal a stepped propshaft, rather than tappered...
it has little to no value, as parts, 'n prop thrust hubs are pretty much Non-existent...

 

[todster]

Re: Alpha 1 trim pump. Prestolite HVLP

Ayuh,... Yer trim pump is off an ole Outboard Merc....

'n yer old MC-1, is a Real Olddie,... that flange comes off to reveal a stepped propshaft, rather than tappered...
it has little to no value, as parts, 'n prop thrust hubs are pretty much Non-existent...

I modified the spacer to fit the new prop on. The gear box and lower unit worked great. The lowers have different splines into the upper so I have to change the outdrive between the 2. I have the longer shaft on the #1 for now while I go through the alpka and reseal it. I converted the transom to the newer alpha 1 hookup with a 140. The 140 is out right now and the old 120 is in it. The 140 sounded like a bottom knock developed and wanted to check it out. (Sofar I see nothing wrong and the babbit looks like new.) The original transom used the older high pressure low volume pump. The alpha 1 had the same looking type pump with the exception of the reverse valve. I need new brushes for it but not sure in the endcaps are the same.
If I buy something like this http://www.ebay.com/itm/Mercruiser-..._Accessories_Gear&hash=item35bcce4d3e&vxp=mtr
will it direct fit or need to be adapted?

 

[Don S]

Re: Alpha 1 trim pump. Prestolite HVLP

Mercruiser did use that pump and it is covered in the service manual. Manual release valve and all. Look at section 5C of manual #6.

You can get a new motor and pump housing from Arco.http://www.arcomarine.com/

 

[todster]

Re: Alpha 1 trim pump. Prestolite HVLP

Thanks Don. I have the manual and have already looked at that. It does not have the part numbers. Any part # that I find crosses to the old style prestolite or the new oildyne. All I need is the cap. Does anyone know if the caps are the same?