Here's a Flathead water pump. Let's rebuild it. Sunday tech quickie
 

The old flathead water pumps are easy to rebuild. I needed one for the 59 flatty / 32 Sedan project and rebuilt this one. Kits are available, so watch along and see how it goes.

https://youtu.be/EAuDkYOLBA0

Re: Here's a Flathead water pump. Let's rebuild it. Sunday tech quickie
 

Mart: where’s the best place to get the rebuild kits?, I’m sure there are a lot of non-USA kits available.

Re: Here's a Flathead water pump. Let's rebuild it. Sunday tech quickie
 

Hi Vette. The kit I used came from Macs. I'm sure all the usual vendors sell the same kit. I'm not sure if there are any non USA vendors. I might be a bit stumped if I want another one.

Edit: the kits are available in the UK but are the macs kits and they are approximately 2 and a half times the price!

Re: Here's a Flathead water pump. Let's rebuild it. Sunday tech quickie
 

Re: Here's a Flathead water pump. Let's rebuild it. Sunday tech quickie
 

No lube on the shaft. Should I? It did scrape some metal off on it's way through. I don't have any 8BA pumps. I think they are the more modern style with a ballbearing shaft assembly, like the truck pump. Hence more difficult.

Mart.

Re: Here's a Flathead water pump. Let's rebuild it. Sunday tech quickie
 

Thanks!

I think I'm going to rebuilt the pair I have to keep as spares.

Re: Here's a Flathead water pump. Let's rebuild it. Sunday tech quickie
 

Go for it HD. Just make sure they are the right type. I am told the 8BA are the more complicated type. Make sure the surface the seal rides on is in good condition.

Re: Here's a Flathead water pump. Let's rebuild it. Sunday tech quickie
 

Thanks Mart, I enjoyed the video, a nice short one for Sunday afternoon viewing.

Re: Here's a Flathead water pump. Let's rebuild it. Sunday tech quickie
 

Mart, very interesting video of the water pump. The pumps I needed on the 52 Merc are a little different. I think they have a narrow cast pulley and pretty sure I"d break them if I tried any kind of disassembly. I got new pumps (or rebuilt) from Napa.

Re: Here's a Flathead water pump. Let's rebuild it. Sunday tech quickie
 

Thank you Mart. Most excellent! I have a milk crate full of those early pumps and I have seen exploded diagrams of what's inside, but they still intimidated me so I always bought new ones. The woodie has Drake's ball bearing type. Not only does your video give me the confidence to try this, but now I'm gonna build a press. Way too much hammering on a punch in this neck of the woods for the last 40+ years! Thanks again.

Re: Here's a Flathead water pump. Let's rebuild it. Sunday tech quickie
 

Great video, thanks for sharing.

Re: Here's a Flathead water pump. Let's rebuild it. Sunday tech quickie
 

Thanks for sharing

Re: Here's a Flathead water pump. Let's rebuild it. Sunday tech quickie
 

I am going to suggest Fred ( Barnfind08 ) at Southside Obsolete. He is sure to have some good USA kits

Re: Here's a Flathead water pump. Let's rebuild it. Sunday tech quickie
 

Found this article with photos on how to rebuild the 8BA style pump.
http://oneilengineering.mysite.com/photo.html

Re: Here's a Flathead water pump. Let's rebuild it. Sunday tech quickie
 

Thanks Mart Good Job! Dave