24V Waterpump DIY

[MattMK4VR6]

Thanks for the write-up, you saved me some serious coin. I have almost zero experience working on cars but I was able to pull this one off and change my belt at the same time (granted it took me a little longer than the time listed ).

[Ld7w_VR]

I bought a Hepu BDF waterpump with metal impeller. Model# P525 "Comparable to: 022.121.011" However, I had a failure after 5000 miles with this model and the warranty unit sent to replace the old one was cast too big, forcing me to grind the three pointed edges so the pulley could turn without binding. Meyle now makes one so I suggest going with them.

I replaced my water pump about 5k miles ago because it was leaking a bit. I went with a GEBA waterpump with metal impeller. Now I also installed my Gruven Parts waterpump pulley at the same time. Like you said I had to file/grind down the three pointed edges so that the pulley did not rub.

[jefswat]

Reinstall the 2 16mm pendulum mount bolts, using the jack to help you align the
holes (raise and lower the jack, and shove the engine with your hands, it is only mounted to the body in one flexible place as of now) Both pendulum mount bolts need to be torqued to 50 Nm (37 ft-lb). These are stretch bolts and VW says they need to be replaced every time they are removed, but I don't.

17. Reinstall the 16mm bolts to the passenger side body mount. They need to be torqued to 40Nm (30 ft-lb) plus 90 degrees (or 1/4 of a turn). These are stretch bolts and VW says they need to be replaced every time they are removed, but I don't. Just make sure you tighten a little extra.

This is a bad idea. The bolts them selves are tightened near failure to begin with. You don't want to add more load to them than recommended. You're playing with fire. Most bolts aren't even tightened to the point where they permanently stretch, so if you over tighten them its not a big deal.

[CAH8]

How often is it suggested to have your water pump replaced. Or do you just have it done when it starts to go bad?

[Holmes741]

Do it before it breaks. I never go more than 100k because if the impeller breaks, there are plastic bits in your system. Not sure what is recommended.

[CAH8]

Can you see the water and tell if its leaking or going bad without having to take anything apart or off? I ask because I am looking at buying a 2004 Gli vr6 with 74,xxx

[Holmes741]

If it's bad, the car will be overheating. That car has very low miles for an '04, you can always have a mechanic look over it for you if you have doubts.

[02JttaGLI]

bentley manual says to lower the engine to access the pump instead...just sayin'

[limastock]

Might be doing this if replacing the tstat doesnt cut it.

Good write up.

[24vGTiVR6]

bentley manual says to lower the engine to access the pump instead...just sayin'

yeah.... when I replaced mine I just unbolted the dog bone + engine mount, lowered the motor a tad via a 2 x 4 + jack under the oil pan, removed the belt and took the whole pulley out. Then, I used a bench vise to remove the old pump and install the new Meyle pump I bought.

much easier.

[35i 2000]

incredible write up!

[35i 2000]

Can you see the water and tell if its leaking or going bad without having to take anything apart or off? I ask because I am looking at buying a 2004 Gli vr6 with 74,xxx

any more thoughts on this? being able to evaluate the condition based on coolant clarity/colour

[Skeil]

Im going to attempt this pretty soon, because my water pump is leaking pretty badly. Already ordered the new water pump.

Question: how "easy" does the water pump come out? Am I going to have to pry it out with elbow grease, or should it pull out fairly easy?

@24vGTiVR6, how did you use a bench vise to get it out?

[jaso028]

^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

it will come out easily... even the pulley will come off easily.. you might have to tap it a little to get it to come off the 1st time, but it does all come off easily..

I found it easy to lower the motor down and remove the lower 2 bolts and then raise it up as much as you can to access the upper bolt on the water pump itself..
all in all the 2nd time around I did my water pump in like 45 mins.. My 1st pump failed within like 3 months .. 1st time probably took me about an hour..

I am kind of curios as to what he is using a bench vice for now @ this point..... lol

[24vGTiVR6]

I used the vice to hold the pump / pulley to get them separated, after the whole thing was removed from the car. If you have the 3 bolt pulley holder tool its a non issue, just loosen while holding the tool in place. I didn't have that at the time, so I took the whole thing out and used a vice to swap the pumps.

And my water pump (with the pulley) just slid right out, no effort at all really.

[Skeil]

Oh great! Thanks guys, because if it required any extra force, I was going to just take it to a shop.

[gti_sean]

this was a great write up, i did mine a week ago.

ive noticed the past few days my temp guage sits at 210 while driving, instead of 190 where it has always been before, is that because of the metal impellar or did i mess something up?

[Yak Meat]

need this!