Hey fellas,

I'm in the middle of a cam install (XE 233/239) and converting to a CSI electric waterpump. I have the WP front cover off, now, according to Ken's instructions (http://ken.lowrance.com/Projects/CSI...mp/Default.htm) I need to hammer out the shaft from the front to the rear with a punch, but I'd hammer on this b*tch for hours and it wouldn't budge I also tried heating the shaft with a propane torch, but I don't like the idea of too much heat around the aluminum WP housing.

Please tell me how you've got yours gutted, I need to put this thing back and hear my 233/239 roar through open JetHots

 

Take it to a machine shop and have them press it out.

 

Heating it up will only make it worse. Your expanding the steel part of the bearing race, and the aluminum will dissipate the heat MUCH faster and not expand as much. If anything, getting the center section COLDER would help do the trick. I would just spray it down with some penetrating oil like PB Blaster and let it sit for a bit.

I put mine between the jaws of my vice, with the jaws left apart enough to let the bearing race pass through. Then find a socket that will fit just inside the hole without hitting the aluminum of the pump, and whack the thing out from the front to the back (inside to outside). I used the BFH, so it didn't take much of a swing

Be sure to put some gasket maker around the freeze plug when you pound it back in the housing to make sure you don't get a leak. All in all, not a big deal. Biggest PITA part of the install is having to make the four "locating" cuts in the pump housing. I marked the spots with a sharpie and used an 80 grit cartrige roll to rough it and a 120 grit to finish it out. Seemed to be about the correct radius with a 3/4" roll.

Good luck man. It's worth it..

Dave C.

 

It took us about 10 minutes to hammer one out. We used a 3 or 5 lbs hammer. If you damage it, you should be able to find a bad pump for $30 bucks or so. I've got 3 or 4 sitting in my garage.

 

I just did this again on my buddies Z. Mine was easy. His took about 2500 pounds of pressure using my press at work. I thought the WP was going to break before that dam shaft came out. Some are just plain hard to get out. Use a press if you can..

 

Thank you guys!
I have soaked it it liquid wrench, but no luck. I guess I'll have to find a press.
Can I push it out from the back to the front, too?

 

Get a bigger hammer. No, only works one way

 

Ok, might try the mighty BFH...But I'm a bit afraid that the WP housing could break..

 

Make sure you have a backup plan, and that there's a water pump IN STOCK locally before you get started.

 

Today, I gave up with the hammering and took the WP to a buddy who had a press and pressed out the shaft/bearing, it took about 20 seconds

Once again, Thanks for your help guys!

 

See? Told ya.. They can be a pain and just need a little more incentive...

 

I had a extra pump laying around for just in case. I know I wacked (hehehe) on mine pretty darn hard before it came loose. Glad everything is working out for you.