Pump seal

[TD-5]

There was a thread on this not long ago: Some interesting reading:
http://powerstrokearmy.com/forums/showthread.php?t=45198&highlight=hpfp+seal+leak

 

[Wemoy1]

got my new pump and the snap ring fits in the front but not sure if it will solve the problem.

 

[Stroked777]

got my new pump and the snap ring fits in the front but not sure if it will solve the problem.

Did you take the snap ring off your old pump and put in on the new one?

 

[webb06]

By looking at a pump I've got that we ordered and never got used like 5 months ago it looks as though the snap ring won't even be in contact with the seal

 

[Wemoy1]

no not out of my old pump it didnt have the snap ring in it either. it doesnt touch the seal. I looked at a pump from work on a truck that I am putting a long block in and the snap ring doesnt touch the seal it seems either.

 

[91turbogsx]

Now the pumps that are leaking, does it seem like the seal is walking out?

 

[BBottoms]

If the snap ring doesn't contact the seal on the original pumps maybe its there more to prevent a catostrophic failure (ie fill the crankcase with diesel quickly). If the seal backs out or gets pushed out by too much fuel pressure and stops at the snap ring it's more likely to be a trickle of diesel instead of a gusher into the engine.