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Discussion Starter · #1 ·
I'm getting ready to tackle a water pump replacement..I ordered the gear tool but i'm a little confused on what to order when it comes to the pump? Since the holding tool bolts to the gear, should I get the AC Delco OE 251-751?? It has the gear on it..or should I get the AC Delco pump without the gear which is a lot cheaper?? Would appricate it greately if someone could tell me what to order and part number if it's available..Thanks
 

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I can tell you, that gear CANNOT move even a hair! If it does, you will get an awful noise and will have to reset the timing chain adjuster. Do not under any circumstances (if your doing your waterpump) move or remove that gear!!!!
 

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Discussion Starter · #3 ·
Changing Water pumo

Thanks Ghost for the info, but after reading all the many posts, I definitely understand"that part"lol..Also,I have a friend that does a little mechanic work on the side that's going to help me. So are you saying I don't need to get the whole Delco pump with the gear..$150 or just get the same pump by Delco without the gear for around $60,plus $20 for the two gaskets??? The only reason i'm asking this kind of stupid question is because I've read where some have bought the whole pump with gear attached??? Thanks
 

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good luck with the home repair and keep us posted. my wp may need the work soon and I was shocked at the price of the special tool....about 250 on the site I found. cheaper anywhere else? (a LOt cheaper)
 

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tanUveddymudds!
 

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Discussion Starter · #10 ·
Changinh water pump

The tool on ebay around $30...the pump without gear Delco..around $60 on ebay..Also I saved that German video on changing it to my favorites!! When I decide to change it, i'll let ya'll know how it came out..thanks for the info!!
 

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It may have "fixed itself". Have you been really hard on it? Gotten the motor really hot? Sometimes the fluid needs to get heated up and the "gum" disolves and the seals on the WP seal back up because their is no more gum. Or at least that's what an engineer said about our WPs....
 

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It's not loaded in a specific rotational direction, I don't believe. The tool holds the chain so it doesn't move toward the right and lose tension and let tensioner overtighten. BTDT. It shouldn't rotate at all with the tool, but I can see it possibly moving a tiny bit if it doesn't get snugged up really tight. I did our WP several years ago at 65K miles (we're now at 145K) The tool at that time was $200 so I built my own. It mostly worked! Got the new pump on but had the whine. Took the front cover off and reset the timing chain and tensioner. The big delay was waiting about a week to get the torque to yield bolts from GM. Really, no commonly used 2.4 Ecotec crank pulley or camshaft bolts in Dallas? WTH? Had fun doing it and it worked like a champ when done. I swear the engine sounded "tighter" and ran better after! :yesnod: Almost 80K miles later and no issues. Doh, jinx. :brentil:
 

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I don't know what your mechanics charge but my mechanic replaced my water pump on my 2.4 for just under 300 dollars not quite a year ago. Considering the price of this 200 dollar tool and the fact that it's a 3+ hour job it may be worth it to just have a mechanic with the tool and experience do it. Just a thought.
 

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I think I'm going to buy the tool and a pump and put it on the shelf. since I have 2 Sol's with under 50k, I just might need it.
 
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