1979 c10 inline 6 w/power steering belt falling off

[Lowhoe775]

Have a problem with my v belts falling off. The water pump pulley is not lining up with crank . Water pump pulley is in about 1/2" difference than crank pulley. Replaced belts two times and they get put on tight. I think it can be the water pump pulley is going bad and for some reason is being pushed towards the engine more. Please help thank you

[Lowhoe775]

[zieg85]

Check to see that your crank harmonic balancer isn't loose

[Lowhoe775]

Check to see that your crank harmonic balancer isn't loose

I tried tugging back and forth on it and it's not moving will try and see if the bolt is tight today. Thank you

[zieg85]

Lay underneath the front and see if the balancer is walking off the crankshaft.  I think the I-6 are a press fit and I've had them come loose

[Lowhoe775]

Took off the crank pulley and found that it was bad. Rubber showing in pic. Anyone having this problem you need to replace the crank pulley

[Lowhoe775]

[1979ChevyMorgan]

When you put those back on or want to tighten them make sure you use an installer, good chance youll strip the crank threads if you use the balancer bolt.