Water pump removal problem

tj0007 · #1 (**permalink**) 10-28-09, 07:14 PM

While trying to remove and replace the water pump on my Deville the removal tool seems to have stripped all the tangs that are holding the original pump in place, and the tool wont grip onto pump at all now. The pump is still in there extremely tight. Does anybody know how I can get around this and still remove the pump? The car is a 1995 Deville Concours northstar 4.6 .

tj0007 · #2 (**permalink**) 10-28-09, 07:54 PM

Pump still wont budge with the tool on a breaker bar. HELP!!!!

**Ranger** · #3 (**permalink**) 10-28-09, 08:18 PM

A few short bursts from an impact will usually break it loose if you can still grip it.

ewill3rd · #4 (**permalink**) 10-28-09, 10:35 PM

Be sure you are turning it the proper way, it releases in a "left hand thread" fashion.

If the pump is torn up you are in for a fight. Like ranger said, if you can get an impact on it and keep pressure in and zap it, be sure to set the impact to TIGHTEN.
If it is a cheap socket, that might be most of your problem. The good ones have nice teeth on them that really bite into the edges of the pump.

submariner409 · #5 (**permalink**) 10-29-09, 09:12 AM

As ewill3rd posted, you remove the pump capsule by turning it clockwise (to the right) and install it by turning it counterclockwise (to the left). The required torque is 74 ft/lb. and you need a helper to hold the socket in engagement with the capsule tangs. It takes about 1/4 turn to unlock and lock. Remember the exact orientation of the tangs.

tj0007 · #6 (**permalink**) 10-29-09, 12:36 PM

Thanks so for for the advice. I have been trying to turn it clockwise the whole time. I got my best 1/2 in impact gun on it today and it is able to grip onto it, but cant budge it. Im thinking of spraying some PB blaster on it may help break it loose?? I need this car back together and running by tonite.

tj0007 · #7 (**permalink**) 10-29-09, 02:25 PM

Finally got the pump out. Cleaned the inside of housing and where the Oring sits, but the Oring dealership gave me seems to be too big and wont stay in. Any suggestions?

submariner409 · #8 (**permalink**) 10-29-09, 02:46 PM

Hmmmmmmmm.......Either a trip back to the dealer or to the nearest NAPA parts store. Maybe, just maybe, a hydraulic hose/parts/commercial repair shop.

**Ranger** · #9 (**permalink**) 10-29-09, 04:44 PM

Can you actually see that it is too big or compare it to the original or are you assuming that because it keeps falling out? If the latter, but a little grease on it to hold it in place.

tj0007 · #10 (**permalink**) 10-29-09, 08:38 PM

I went to the local Napa store to check what they had. Parts guy opened a water pump kit for my car to compare the 2 Orings. Dealership Oring was noticably bigger. I bought Napa's Oring for 3$ and headed home. It fit great so I used that one. I got everything bolted back together and full of coolant mix, started it, checked for leaks, and went on about 20 mile drive. Got home and nothing is leaking. Topped the coolant off. I will recheck for leaks after driving it tomorrow. Thanks to everyone who helped me out here