water pump on a end 510

[one horse logging]

is there anywhere i can get a water pump for a end 510 or does anyone know where i can get mine rebuilt

[mowerman]

That’s an easy fix Shops everywhere google search good luck

[Vladislav]

You need to remove (by a puller) a belt pulley from one side of the shaft and than the pumping wheel from the other. After that the rebuild is a carbon seal and two bearings. 

[Joey Mack]

Vlad,?  If I may?  is the carbon seal that you describe, a ''Mechanical seal'' as I may know it to be?  I have 2 Mack water pumps to re-build, and am curious about what you say.  You are extremely smart and I respect what you post..  

[yarnall]

I have used Arthur Gould. I’d recommend rebuilding.  I tried to paste the site but was unsuccessful.  Anything you’d buy might need rebuilt anyway.  

 

[Vladislav]

On 11/3/2024 at 8:54 PM, Joey Mack said:

Vlad,?  If I may?  is the carbon seal that you describe, a ''Mechanical seal'' as I may know it to be?  I have 2 Mack water pumps to re-build, and am curious about what you say.  You are extremely smart and I respect what you post..  

You overestimating me Jojo.

I've rebuilt a pump of my ED Lanova engine which I belive is very similar to that END-510 pump. It had a carbon ring combo'ed with rubber bushing and brass support ring. The parts were given to me new by a friend. But looked like some very usual repair kit of the past. The carbon ring works against a lapped spot on the pump housing. Actually a circle over the shaft hole in the housing. Cast iron was hardly pitted in the area so I ground and than lapped it. Cleaned bearings in solvent, put new grease, put new seal in place, assembled everything and spilled a half of glass of antifreeze in. Found it leaking so had to remove the pump wheel (sorry can't remember the correct term for the 2nd day). Found out I put the seal slightly wront. Fixed, reassembled, test filled with anifreeze agan - fine!

All that was nearly 8 years ago (and the engine is still not in the truck!). But just the other day I finished restoration of a pump for my R-model (E6-350). It has a unified seal you remove from the housing and put back a new one (both avalible OEM and PAI). In my case it turned out I purchased original Renault part (it came from Europe). Of interesting points I noted 1st that unified seal has also conteined carbon (or ceramic-?) ring in it which just works against a certain internal part not the pump housing. Something like a Stemco hub seal. And the 2nd the overall design of that newer pump (E6 and E7 too) is very close to what Mack used in 40's and 50's. Even the gasket is the same. And as it looked to me you could cut the central hole in the old housing so it would be possible to fit that modern seal in it. Sure with a lathe. I just didn't have need already otherwise that might be a way to go.