1.6 NA crank pulley wobble

[93Ford]

So i got about an 1/8in of wobble on the crank v belt pulley of my 1985 jetta with the 1.6 na diesel. It looks like the v belt pulley is seperate from the harmonic balancer. If it is what is the part number for that pulley it really should be replaced. Should i use new bolts blue or red loctite whats the torque spec.

[fatmobile]

That should come off with 4 bolts.
 Allen head bolts,.. probably retorques to 15ftlbs like most of the 8m1.25 bolts.
I don't think the pully is separate from the harmonic balancer.

 But first, remove the belt and grab that pully.
 See if it's the whole crank sprocket that is moving.

 The keyway on that year is weak/tiny.
 It has been known to let go of the crank.
See if that center crank bolt is still tight.

[93Ford]

When i went to check it i couldnt budge the pulley there is no play at all i was actually lifting the whole engine instead which showed me i need some engine mounts. From what i can tell it just looks like that pulley is bent. I guess ill find out more when i take it off.

[93Ford]

I found what i believe to be the correct pulley brand new the part number is 068-105-255D but as you can see the last letter is D instead of H. It says it goes to an Audi 4000 1.6 diesel from 82-85 it looks just like the original pulley but im not 100% its the correct one.

[fatmobile]

I'm not sure on that either.
 Because they put the alternator on the backside of the engine on the audi 4000.

I heard there is a place that refurbishes them but 
I don't have a link for you.

 Glad to hear your keyway isn't letting loose.
 You might still want to check if the crank bolt is loose.

[93Ford]

I went to try and remove the pulley and checked the crank bolt and it was tight. The pulley bolts might cause me some trouble. I used a 6in wrench and i wasnt able to crack them loose then i tried a small electric impact and it didnt do anything. Im going to use my big electric impact and hope they dont break or strip.

[93Ford]

Ok, so i managed to get the pulley off and there is no harmonic balancer. The pulley just bolts to the timing belt gear. The pulley is definetly bent so ill try to straighten it but more than likley ill need a new one. Does anybody know a part number. Should i use some loctite on the bolts. Can i replace the hex cap screws with just a socket head bolt with a washer.

[93Ford]

will a pulley from a gas engine of that year work i cant seem to find any pulleys anywhere. I did find some new ones straight from vw but there 100$ which seems crazy for what it is

[fatmobile]

Oh it's one of those.
'85 should have some rubber on it.
 
 I can't remember if one from a gasser will work or not.
Just have to hold it up next to one and see.
 
What's the part number on it, I'll check my pully bucket.
I don't think you can fit a regular socket on it, it might sit to close to the sides.

[93Ford]

I dont know the part number its rusted away. I did manage to straighten it back out, its not perfect but way better then it was Yea, theres no rubber its just a plain steel pulley that bolts straight to the timing gear. Looks like i might just get some new oem pulley bolts they shouldnt be to expensive.

[fatmobile]

 Yeah, you shouldn't need to be a machinist to straighten it out, ha.

 And if you have a local fastenal you can bring the old bolt in and I bet they can match it.

 Even a local hardware store might have a 8m1.25 allen head assortment.

[93Ford]

I live in the middle of nowhere so i had to just order the bolts. I got oem vw ones 8 of them just in case.

[33B]

Bolts on these engines can bend over time or loosen. (if loose it would make a scraping sound) Depending if you have a power steering pump or not, you have 2 or 3 pulleys.(if you have power steering pump it is separate from the dual pulley and has a nipple that needs to be located) Either way unscrew them and buy new bolts and add some thread locker. None of the belts need to be loosened (water pump, alternator, power steering). Power steering belt can be problematic to put on, so I would suggest using a screwdriver and your hand to put it on back on the power steering pump. Just be sure not to over tighten them because the crankshaft pulley is soft, and also make sure not to use too long of a bolt so it doesnt damage the crankshaft seal.
And also help yourself and use a mirror since the pulley lines up only one way with the holes.

[93Ford]

I have manual steering. It seems the first belt is a crank pulley, water pump, and ac compressor. The other belt is an ac compressor, Alternator, and tensioner pulley. All the other pulleys are fine they run dead straight. If overtightening the belt can bend the crank pulley then that's probably what happened. The outer shell wasn't bent it was the whole outer part that was bent/no longer even with the mounting surface

[fatmobile]

More likely a rock came up and hit it.
 It sits pretty low and there is no protection.