WHY won't my water pump pulley cooperate?

[1Gina2G]

Okay so I've taken off my water pump pulleys twice now, I don't understand the deal. I've used these same pulleys, which are in good conditon, including the crank pulley. Altnerator pulley is also in good shape, and inline with the crank pulley.

the smaller water pump pulley also lines up with the powersterring, being dished in towards the engine. The bigger outer pulley was also dished in towards the engine but the pulley appeared to be wobbling. Flipped it, to dish outwards, and now the alternator belt will not stay in the pulleys in line, even though the pulleys are not oily.

Looking at the timing from above, it looks like the outer pulley is just a tad more outwards than the alternator/crank, so the belt attempts to move towards the engine side, riding on the edge of the water pulley...

I've compared online even, to be sure I have the correct pulleys, and they look the same, and have worked before.... is it possibly because these pulleys are 7 bolt? on a 6 bolt water pump?

 

[DSM1G90]

Block doesn't have anything to do with the pump.

Do this trick with one of the bolts: put one bolt through the outside pulley. Tape it down to that pulley (this bolt will be your dowel pin). Put on the inner pulley on the pump and align the bolt holes and make sure the pulley is snug down to the back flange on the pump. Now, you can align up the front pulley with the back pulley and hand start the bolt. Now, hand start all of the other three bolts and tighten them down in gradual steps and across from one another.

If you're tightening down one bolt all the way, you're tweaking the pulleys against the back flange - why it's not laying flat and wobbling on you.

-Good luck .. DSM
.

 

[1Gina2G]

well, I've never had trouble getting them on / off after removing the motor mount, but I keep getting mixed right ups.

so its supposed to go on as such right? smaller pulley dished inwards to the engine, bigger one dished outwards?

can someone please clarify? ^ thats how i have it bolted on but the belt wants to come off.

 

[bcjjones]

Yea I believe that is correct. If I remember the inside is in and the outside is out, from what I recall you can clearly tell if its wrong.

Also, I always found it easiest to put the power steering belt on the back pulley and put a small amount of tension on the ps pump to hold the back pulley in place while putting on the second pulley

 

[rts91tsi]

This isn't the greatest quality picture, but it should answer your question.

 

[luv2rallye]

Water pump pulley on backwards: http://www.dsmtuners.com/forums/new...n-out-water-pump-pulley-go.html#post151166499

 

[hypergenesis]

Take off the belt and install the pulley then install the belt and use the arm for the alternator to adjust the belt to the correct tightness.

 

[1Gina2G]

I've seen the backwards pic post before, doesn't clear show or mention which way the bigger pulley is on in that pic.

It seems the bigger pulley, on its flat side, has an impression for the smaller pulley, so thats why mines dished outwards...

so I guess it HAS to be, that they're both dished inwards then? doesnt make since, in the very post that was cited for the 'official backwards pic' the guy above mentions how it's THE FLATSIDE goes outwards??

 

[Tyeler18]

They are both set with the dished end into the motor. The flat side of the alternator pulley should be on the outside, as the dished side is towards the engine.

 

[1Gina2G]

They are both set with the dished end into the motor. The flat side of the alternator pulley should be on the outside, as the dished side is towards the engine.

I really hope this is the fix for me, but is there any other reason why the pulleys would wobble once I flip my outer one to match this^^ ?

 

[Tyeler18]

The bearing in the waterpump could be going out.