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Hemi24 02-23-2012 10:04 PM

Water Pump
 
Recently my '05 5.7L WK has been going through coolant like crazy. I haven't noticed anything leaking onto the ground after it's been parked. The water pump has been squealing when I start the engine. Has anybody ever replaced their water pump? If so, how difficult is it? Any advice/tips would be a huge help. Thanks!

Chaoul1 02-23-2012 10:47 PM

Re: Water Pump
 
It takes about 2 hours if you have the right tools. I did mine about a year and a half ago. I do have some squeeking when I start the Jeep. I think it's the serpentine belt, but I half to double check in the morning.

When changing your waterpump you will need a new waterpump gasket, T-Stat, and Coolant.

Madanio24 02-23-2012 11:43 PM

Re: Water Pump
 
Quote:

Originally Posted by Hemi24 (Post 580242)
Recently my '05 5.7L WK has been going through coolant like crazy. I haven't noticed anything leaking onto the ground after it's been parked. The water pump has been squealing when I start the engine. Has anybody ever replaced their water pump? If so, how difficult is it? Any advice/tips would be a huge help. Thanks!

On my 3.7 it was squealing And making a gone bearing sound. I figured out it was bad by taking off the serpentine belt and I was able to move the water pump pulley back and forth. Supposed to only turn.

Bleeding Blue 02-24-2012 03:53 PM

Re: Water Pump
 
Here is a really good how to video for the 3.7, Im sure the HEMI is significantly different, but it may give you a good place to start


Hemi24 03-01-2012 08:37 PM

Re: Water Pump
 
I just received my Jet 180 thermostat and serpentine belt. I was able to get a brand new water pump for only $75. Gonna try the install with my brother this weekend!

jeepgcoman 03-02-2012 06:58 PM

Re: Water Pump
 
When you do the change, note the refill procedure I used on mine in Post No. 14 on this thread: http://www.jeepgarage.org/showthread...393#post585393 It'll make your life a lot easier. I use a 50-50 mix of HOAT type antifreeze and distilled water. I always premix mine in a gallon jug. That way you can use what's left to top off as I indicated. If you're just changing the water pump it shouldn't take a gallon. When I changed the cam on mine it only took about a gallon and a half. Like Chaoul1 said, you'll need the HOAT (don't use anything else) antifreeze, distilled water, the pump comes with a new o-ring and a new thermostat or a Felpro 35840 housing gasket. This is the only one I've been able to get to work without leaking. If you can't get that gasket (it's thicker than most) get a new thermostat from the dealer. Theirs is the only one that comes with the stock o-ring. The o-ring is the sticking point. You can't (at least I've never found it) buy the o-ring separately and if you buy just the thermostat from anywhere but the dealer, it doesn't come with the o-ring. Go figure. Good luck and let us know how it goes.

remmy 03-26-2012 11:40 PM

Re: Water Pump
 
I had exact symptoms. First, it wasnt my water pump, it was the Power Steering. Second, my radiator cap took a crap. Replacing it fixed my coolant leak.

Madanio24 04-02-2012 03:29 PM

Re: Water Pump
 
the only hard part was bleeding all the air out of the cooling system, using the allen key valve on the top near the water pump hose. i did a complete flush.

DAVY27 06-17-2014 09:12 PM

Re: Water Pump
 
^ how do you know when to tighten that allen key valve back?

Frango100 06-17-2014 09:41 PM

Re: Water Pump
 
Quote:

Originally Posted by DAVY27 (Post 1039306)
^ how do you know when to tighten that allen key valve back?

Normally the cooling system bleed plug (the allen key plug)should be put back in place as soon as the coolant starts flowing out of the hole when filling the fluid through the radiator fill opening. After installing the plug, continue filling the radiator until it almost overflows and then install the radiator cap. When running the engine, trapped air will be moved by the coolant and go to the highest point in the system, which is the radiator fill neck. During the cool down cycle, coolant from the expansion reservoir will be sucked back into the radiator. During next heat up cycle the air, which is still in the radiator neck, will be pushed towards the expansion reservoir by the expanding coolant. It can take a few heat/cool cycles to get all the air out.

DAVY27 06-17-2014 10:22 PM

Re: Water Pump
 
^good stuff! I know what i'll be doing the next few days!

Madanio24 06-18-2014 08:11 AM

Re: Water Pump
 
When only coolant comes out with no bubbles, but i do it in stages. Ill let the engine run open the valve let all the air out then clsose it. Wait a few minutes open it again let the air out and close it. Repeat over and over haha


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