1993 580SK fan belt replacement

[James S Coad]

Please advise me on the most effective way to replace this belt .
The old belt finally gave out, gone.
Am I correct that I can still start and raise the boom, that the hydraulic pump is turned by the spline in the engine and then place locking arm in place, then proceed with counter weight and pump

 

[92U 3406]

If the water pump is belt driven I would not run it for more than a minute or 2 at a time without letting it cool off for a while.

 

[Tinkerer]

Welcome to HEF, James !
Yes you can.
First be sure to remove the old belt to prevent damage to the radiator.

 

[James S Coad]

Thankyou.

Welcome to HEF, James !
Yes you can.
First be sure to remove the old belt to prevent damage to the radiator.

Any additional information you might have would be greatly welcomed.
Happy Holidays

 

[Tinkerer]

I have the service manual if you need it.
Send me a private message with your email address in it and I will send you a link to my Google Drive.

 

[mitch504]

It's a real pain however you do it, but I don't pull the chinweight. I just reach down and take the 4 bolts out, then pry the adapter forward 3/16" and slip the new belt through.

 

[James S Coad]

It's a real pain however you do it, but I don't pull the chinweight. I just reach down and take the 4 bolts out, then pry the adapter forward 3/16" and slip the new belt through.

Hello.
Thankyou. I'm not sure what you mean by "adapter". Is that the pump itself
? Any further information would be great. I'm really hoping to do it this way but saw another post that said you could bend the pulley and I wouldn't want to do that
Thanks again

 

[Tinkerer]

#14 is 1/2 of the pump coupler that you need to separate.
There is no need to pry on the crankshaft pulley.
Parts book link for you -->https://www.mycnhistore.com/us/en/c...56875BD6/ECD06496-EFBE-E111-9FCE-005056875BD6

 

[Delmer]

#16 is one of four bolts that come out, then slide 14 back on the shaft to get enough room to slip the new belt through. Take a look at the splines on the pump shaft, work some moly grease into the threads while you have it loose, if it's rusty or dirty, clean it first. Check the crankshaft pulley for wobble with the engine running, check all the other pulleys for bearings feeling gritty, alignment, nicks or bends in the vees. Especially the fan. Check the front engine bolts for tightness and any movement of the mounts for engine or pump. Worn paint, or rust seeping are the biggest signs if they're not obviously loose.

 

[mitch504]

The adapter is a 4-bolt flange that bolts to the center of the pulley that the splined shaft on the pump slides into. You won't bend the pulley if you push forward on the handle of your pry bar so that the pressure is in the center of the crank, rather than pulling back which would put it on the periphery. The pulley on that machine is much more robust that the V-pulley on older ones.

Weird: I posted this 2 hrs ago, it didn't post, but showed up dim in the bottom window when I opened the thread back up.

 

[Tinkerer]

Weird: I posted this 2 hrs ago, it didn't post, but showed up dim in the bottom window when I opened the thread back up.

I have had that happen also quite often.
I'm probably wrong (again) but I think if I exited the webpage before the post was completely loaded and that is what happened.
At times, I still have problems with HEF pages and postings taking forever to load.
It isn't my browser or internet service, because I can go to a different website when HEF is stalled out and new pages load instantly.

 

[joe--h]

If it's a V belt, you can use a link belt and skip all the misery. https://www.harborfreight.com/vibration-free-link-belt-43771.html?_br_psugg_q=link+belt Amazon has them too.

I've had one on mine for years, no problems.

Joe H

 

[Tinkerer]

If it's a V belt, you can use a link belt and skip all the misery. https://www.harborfreight.com/vibration-free-link-belt-43771.html?_br_psugg_q=link+belt Amazon has them too. I've had one on mine for years, no problems.
Joe H

It is a serpentine.

 

[James S Coad]

Hello, do you think I could make it work on a vGroove 1" x 5' fan belt ?
It surely would help.
I was thinking about purchasing 2 -
1/2" x 5', running them side by side.
Did your application have a tensioner?
If so did you utilize it or skip it ?

Kindly James

 

[joe--h]

If you're asking me I'd guess no. And no tensioner on mine.

Joe H

 

[Tinkerer]

Sorry, but no it is not possible.
The tensioner cannot and should not be eliminated.
Be sure to check the tensioner pulley for a loose or failing bearing.
It is quite common for them to wear out.

 

[James S Coad]

You know what, I've never heard of these adjustable v-belts until now.
I'm going to order one from Amazon, install it inside out, with or without the tensioner and see if it works.
Worst case scenario, it doesn't work
Best case scenario, while golly gee, it WORKS

 

[HarleyHappy]

How’s it going to work on the outside with the tensioner?
Good luck, sincerely.

 

[Delmer]

Bad idea, put the OEM belt on, or a Gates etc. And you won't have to do it again for another twenty years, this is not something to see if it gets by for three months then blows your engine because it fails. Those segmented belts run fine as V belts, but they hate rubbing and that's what you'd be doing running on a multi v. You'd be just as well splicing leather and hoping that works.

 

[Tinkerer]

You can ignore the advice of experience and do the most asinine thing I ever read on HEF.
Please post back and let us know how many tubes in the radiator were damaged when those upside down v belts get tossed off the pulleys.