Impeller direction

So, after far too long I am changing out my impeller on the old 84.
Now I have seen many people say it is easy to reverse the impeller, so be careful to watch which way it comes out.

Well, this is my question- Is the housing the part that is easy to mix up or is it the actual rubber impeller? I pulled the old one out, not really knowing it would be such a tight fit, and in the meantime I don't know which way the new on is supposed to go:(

Which way should the impeller bend and all that jazz pics help a lot.

so they go against the rotation??

saffer wrote: so they go against the rotation??

In Tims picture, the impeller would rotate clockwise. The blades of the impeller trail the rotation of the shaft.

It's always confusing to me how many people get in trouble replacing an impellar. The only way you can get in trouble is if you remove the hoses from the pump while replacing the impellar. I have changed impellars in many direct drive inboards and have NEVER had to remove the hoses to do it. Just unbolt the housing from the brackets, remove the bolts so you can split the housing open, R/R the impellar and bolt it all back in. No chance of putting in in backwards.

I don´t know why but in the sherwood rwp for some reason you need to remove the pump to work it out so thats when you get confused..I think removing it makes it easir to work on them..And when I do it I disconnect the hose at the pump entrance and outlet...and mark the position..

Sherwood RWP Ski Nautique w/351. It all depends on the ROTATION of your engine. Remember....the 1:1 engines are a reverse rotation engine!

PCM Tranny 1.23:1 Tranny- Drain Screw points IN! (Points towards the crank on the motor)




Borg Warner 1:1 Tranny-   Drain Screw Points OUT! (you can see it if installed correctly)

Tim

For sherwood pump shown on Gt40 in a previous post...Cam screw in towards mtr for LH/ std Rotation...Cam Screw out towards starboard side of boat for RH/ Rev Rotation. Hose bibs up and down

82 Nautique 1 wrote: Mounting direction 351 PCM Ford

Dennis,
Careful here - don't want to mislead people with LH standard rotation engines. You have pictured the position for a RR engine. No name (seperator) has the proper advice.

Seperator wrote: For sherwood pump shown on Gt40 in a previous post...Cam screw in towards mtr for LH/ std Rotation...Cam Screw out towards starboard side of boat for RH/ Rev Rotation.

I found this information on the Sherwood website.

Which is the Inlet Port and which is the Outlet Port?
One frequently asked question is which port is the inlet and which is the outlet. Most Sherwood rubber impeller pumps are bidirectional, so the rotation of the engine and the orientation of the pump mount will determine which port is which.

In general there is a cam screw between the ports. That screw holds the cam in place; the function of the cam is to squeeze the impeller as it rotates over it. As the impeller moves away from the cam, the impeller blades open up and water is ingested in the pump (pump INLET). As the impeller approaches the cam and becomes compressed, the water is forced out of the pump (pump OUTLET).

Below is link to Sherwood site... Very helpfull - covers many styles of pumps

http://www.sherwoodpumps.com/en-us/Products/Pumps/Technical+Tips/FAQ1/FAQ1.htm

There's a lot of people that wished they'd found CCfan earlier!!! 4 hours and $100 bucks...consider yourself lucky!!!

I am not asking about direction as much as the impeller itself. I went to replace mine just because it had been a while, The old one I took out was much more durable than the new one I purchased to put back in. The pic on this post by Tim has the one I want, I just don't know where to get it. I would put my old one back in in a minute if I could find it. The new one only lasted a year or so. Any ideas?

What boat ? What engine? It makes a difference ........

just go and get a genuine Sherwood impeller 9959k if I remember right.

You guys aren't really talking about which way the blades go are you? I think my head would explode.
Just pay attention as to which side of the pump the cam screw is on before you take it off.

I'm looking for an impeller that does not need replaced every year. I had one that was made of a different material and I saw it in this thread and wondered if anyone knew where I could find it.