DIY 2nd Gen Water pump replacement

I just received the

$116 AISIN WPT802 AISIN WPT-802 New Engine Water Pump with Gaskets - Compatible with Select Toyota 4Runner, FJ Cruiser, Tacoma, Tundra

AISIN WPT802 water pump from RockAuto. A few questions
1. There is a obvious etch/cut on the part, seems to remove some serial no. Is this normal?
2. Plenty of machining marks on the bottom mating surface, some deeper marks around bolt holes can be felt by running finger over them. Would these marks affect sealing capability?
3. There is absolutely nothing warp the pump inside the AISIN box, not even a plastic bag. As you can see from the picture, those bolts not only made a big hole in the box during shipping, they also punched through the shipping box. Is this typical AISIN packaging? Does this look like a new part to you or someone's returned part?

Thanks,
Kevin

 

That ground out spot on the casing is probably where they poured in the liquid metal into the mold. It's just ground down a little rough. The mating surface is ok that's why they give you a gasket or a liquid gasket to seal the mating surfaces. As far as a tear in the box, I assume it was packed inside another box. With such a sharp edge along with the 4 bolts sticking out. I can see why their be some kind of rip/tear in the box from shipment. Does the box have grease marks or looks like it's been open several times? If not I wouldn't worry about it. If you're really that concern, I'm sure Toyota OEM pump would be a little prettier and come in a nicer packaged box. At a much higher price! Don't worry about it'll be ok.

 

My '07 2.7L 4x4 Tacoma's water pump just failed at ~95k miles. This is a great reference! I'll post a reply once I have completed this job.

 

My '08 4.0L TRD is at 115k miles, coolant still looks and smells great and no noise from the pump. I'm starting to wonder if I should take this project on as a preventative measure or just see how far I can take this pump. Any opinions out there?

 

I'm seeing how far I can take the water pump. My 06 (I'm original owner) currently has 215K miles on the original pump. Coolant has been changed every 100K miles with genuine Toyota Super Long Life fluid.

 

So I started today and have removed everything to get down to the water pump. The biggest difficulty that I have had so far is removing the four nuts that secures the cooling fan to the water pump pulley. Mine were practically welded on but with some time and effort they relented. Ill post pictures after I finish the swap.

 

Take many pics, I'm interested! Good luck.

 

I forgot to post the results of the swap. After two day of work (this was one of my first major replacements), I swapped out a water pump, thermostat, radiator hoses, and flushed/replaced coolant. That was a lot of work! Here are some pictures and descriptions of the process:

http://imgur.com/a/S2MJO

 

Is this a second gen 4 banger? It's certainly not a 1gr fe. Don't recognize the motor.

 

Yes this is a 2nd gen 4 banger!

 

I must be one of the lucky ones also. My 2005 Tacoma currently at 145k miles and still with the original water pump and coolant. I'm gonna keep going until the pump starts weeping coolant or makes noises. Hope I can get to 200k miles

 

Best of luck. Hopefully my pictures will help!

 

174,000 and counting. New fluid but same water pump.

 

174K? Cool, I'm considering changing the fluid when I get to 175-180k miles. It still looks pink and smells normal

@john81892 ,Thanks

 

didnt you have to tension the serpentine belt to its proper specs when you put it back? how did you measure that it was the correct tension?

 

Well I think it sets the tension on it's own. There is a tensioner pulley that does the work...use a socket to turn and release tension then belt can be removed. You will need a screwdriver to hold the pulley un-tensioned. After routing your belt back around take the screwdriver out and you're good to go.
Unless, I did it completely wrong.

 

I 2nd that it's got a spring loaded automatic tension pulley and no adjustments needed.

 

Ahhhh...the words I was looking for.

 

What is correct Torque for the water pump bolt's ?

 

Hi guys, I'm changing my water pump today. I have 176,000 and it started
making noises, hope it doesn't take all day