bowen
Senior Member
Back in 2011 I had the alternator rebuilt and they told me the fan bolt was loose so they tightened it.
They said the loose fan caused the alternator to overheat and fail.
Now, fast forward about 125 hours running time later.
Last week I heard a new intermittent chinky chinky noise when it was running.
It was most noticeable as I shut it off and the engine was spinning down.
What I found was that the fan on the alternator was loose again.
It would just free wheel from my finger with the engine stopped.
I unbolted the alternator and was able to tighten this end/pulley nut, 15/16" I think, so the fan is now tight.
So the question is.
Why is this working loose? Is it common? Does it need some lock-tite on it?
And is that all that holds the fan? Do I need to take it apart to replace a keyway or some part missing?
After that 1st repair I did replace the tensioner, belt and hydraulic coupling.
My new tensioner is always shaking somewhat and I wonder if this is normal.
It's always quiet but that tensioner spring really gets a workout.
They said the loose fan caused the alternator to overheat and fail.
Now, fast forward about 125 hours running time later.
Last week I heard a new intermittent chinky chinky noise when it was running.
It was most noticeable as I shut it off and the engine was spinning down.
What I found was that the fan on the alternator was loose again.
It would just free wheel from my finger with the engine stopped.
I unbolted the alternator and was able to tighten this end/pulley nut, 15/16" I think, so the fan is now tight.
So the question is.
Why is this working loose? Is it common? Does it need some lock-tite on it?
And is that all that holds the fan? Do I need to take it apart to replace a keyway or some part missing?
After that 1st repair I did replace the tensioner, belt and hydraulic coupling.
My new tensioner is always shaking somewhat and I wonder if this is normal.
It's always quiet but that tensioner spring really gets a workout.