JD 750c lgp belt squealing again

[Dan Pflip]

2004 JD 750c keeps squealing the belt, what happens is if I get any dust in the engine area warm or cold or after a few hours of running the belt starts squealing. I believe it is squealing on the fan because I can hear the fan blowing slower based on rpm speed and how loud it should be. I have replaced belt, tensioner, bearings in the fan assembly and new a/c front. I have also tried belt dressing, deodorant and a couple other suggestions nothing helps. Has anyone ever had an issue like this and it was something odd? Is it possible the fan pulley could be wore? How many lbs of pressure is the tensioner suppose to apply? Any ideas help. Thanks in advance

 

[LN Pipeline]

Do you have a small oil or coolant leak dripping on the belt? Maybe the front main seal or water pump?

 

[Dan Pflip]

No I looked all around it totally dry. I also can’t find any resistance on anything that needs to spin everything seems free warm and cold. Thanks

 

[DB2]

I would suggest the fan pulley could be worn. Can you post a picture?

 

[Dan Pflip]

Yes I can may be a couple weeks before I get to it. I’ve never had a pulley go bad so I don’t know if that ever is the problem

 

[southernman13]

Have u touched any of the pulleys when it starts squealing? Could have a bad bearing. It’ll be hot fosho. Turn engine off first lol

 

[Tinkerer]

OEM John Deere belt or an aftermarket brand ?

 

[Dan Pflip]

I only used John Deere parts not an aftermarket part guy spend the money right away instead of spending twice as much a month later

 

[Dan Pflip]

Have u touched any of the pulleys when it starts squealing? Could have a bad bearing. It’ll be hot fosho. Turn engine off first lol

No bearings seem to be abnormally hot

 

[muzy]

Could your rad be a bit plugged?
Nice to start with basics, could be a symptom and not a cause.
Muzy