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post #1 of 27 Old 09-28-2019, 03:16 PM Thread Starter
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Fan pulley wont adjust down

I tried to put my fan& shroud on today but the fan pulley needs to go downward in order to get the belt on, only prob is Im 99% sure it wont go down any further.
I removed top pulley and loosened up the big 1 1/2 nit on back @ fan blades and tapped it w/a dead-blow hammer but it didnt move any.
I didnt loosen the thin nut just behind the top pulley because I was afraid it would all fall apart and getting the new bearings and fan on is one thing I messed with for an entire week and had to take it to a shop to get it done and I dont want to cause that cluster again unless I have to but I can pretty much see there isnt any room for it all to drop-down any.
I enclosed a few pics and also of the belt I got to make sure its the right size it calls for and maybe someone real familiar with it can look at this and see if they can tell by eye if it looks bottomed-out or not.
And is getting a bigger/longer belt unheard of? Or is there something wrong somewhere that must be taken care of.
Thanks in advance
Gerrard...
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post #2 of 27 Old 09-28-2019, 06:38 PM
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Re: Fan pulley wont adjust down

Gerrard,

That fan hub is all the way down in its slot. Sometimes you have to tip the air shroud and fan assembly back to install a new belt, and the belt will be tight for a little while, but most stretch out after a little use.

Roger,

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post #3 of 27 Old 09-28-2019, 06:43 PM
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Re: Fan pulley wont adjust down

Or maybe get a 1/2"~1" longer belt and see if that works better... I've found on a lot of older equipment that published numbers don't always yield perfect results.

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post #4 of 27 Old 09-28-2019, 11:59 PM Thread Starter
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Re: Fan pulley wont adjust down

Quote:
Originally Posted by beaner2u View Post
Gerrard,

That fan hub is all the way down in its slot. Sometimes you have to tip the air shroud and fan assembly back to install a new belt, and the belt will be tight for a little while, but most stretch out after a little use.

Roger,
Man My net is back on finally, anthow I couldnt imagine how I could do that Roger I mean its like 2" high at least.
And if I bent the shroud outward I couldnt run it because nothing else would be attached to it you know? A longer belt seems like the only answer at this point if there isnt a " man I feel stupid (again) why didnt I see that" moment.
I was hoping it was something right in front of me I was missing kinda thing but guess not.
Thanks for the reply.
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post #5 of 27 Old 09-29-2019, 12:08 AM Thread Starter
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Re: Fan pulley wont adjust down

Quote:
Originally Posted by Kubota Ronin View Post
Or maybe get a 1/2"~1" longer belt and see if that works better... I've found on a lot of older equipment that published numbers don't always yield perfect results.
I guess that is the only answer at this point.
And I know what you mean about published numbers/instructions, sometimes I wonder why they bother.
Another prolly 8 or 10 bucks wasted on a belt.
I got it at TSC at least a tr. ago so takin it back for a exchange is out of the question.
Thats the problem with buying parts for about anything to be used sometime in the future, some of them aint right and its been to long to exchange them.
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post #6 of 27 Old 09-29-2019, 01:25 AM
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Re: Fan pulley wont adjust down

If it looks like it's still new, and I see you still have the box... drag it in and ask. Worst that happens is they say 'no'.

I work on a lot of different machines and so end up with the odd belt now and again, either wrong or didn't need or... you know how it goes. I hang 'em up and wait, sooner or later most of 'em find a home.

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post #7 of 27 Old 09-29-2019, 01:40 AM Thread Starter
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Re: Fan pulley wont adjust down

Quote:
Originally Posted by Kubota Ronin View Post
If it looks like it's still new, and I see you still have the box... drag it in and ask. Worst that happens is they say 'no'.

I work on a lot of different machines and so end up with the odd belt now and again, either wrong or didn't need or... you know how it goes. I hang 'em up and wait, sooner or later most of 'em find a home.
Yea I do have the box so it couldnt hurt to try. I guess I'll try to get a piece of string to get some kind of measurement as to what size I really need.

What do you think about the Kevlar infused belts like the box says it allegedly, are they OK or should I just get a Gates auto belt or something?

Man I cant even see the screen, Ive nodded-off and typed about 1,000 "T's" and everything else and had to back-space lol!
I'll have to check back in the morning....and find the cigarette I was smoking a cpl minutes ago lol
Later and thanks for the help
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post #8 of 27 Old 09-29-2019, 02:47 AM
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Re: Fan pulley wont adjust down

I've never bothered with kevlar for regular belts... never saw the need I guess, especially for stuff I use around the property. Going to sea or something... maybe...

Later... don't burn yourself down...

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post #9 of 27 Old 09-29-2019, 11:24 AM
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Re: Fan pulley wont adjust down

Gerrard,
Do not get rid of the belt yet; instead look at the belt itself for markings to verify that the size is 31” (it should be marked physically on the belt). I am sure that more than once some kids or staff at the store have put back belts in the wrong packaging - ˝” X 31” is indeed the correct size for you machine. I tried the kelvar belts earlier after reading a recommendation here on mytractorforum but did not find them to be very good. In fact, I think I saw a relatively short life as compared to the ‘regular’ belts – I know others like them but my experience was not as positive.

I just replaced the fan belt on one of my machines a few weeks back and had to do a little ‘coercing’ to help get the belt over the pulley. The tab on the fan bearing lock washer should be on top… as yours is. Loosen the fan bearing assembly enough so that it will side it the slot without too much force. I installed mine over the lower fan drive pulley and then held the belt to the upper fan pulley and rotated the lower fan pulley by hand in order to get it over the ridge on the upper fan pulley. Do make sure that the fan housing is properly secured first (and remove the spark plug as you do not need extra resistance here!).

Finally, be patient and do not force anything. Report back with your success!!!

Daryl G

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post #10 of 27 Old 09-29-2019, 12:33 PM Thread Starter
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Re: Fan pulley wont adjust down

Hey Fireant, good to hear from ya.
As you can see ( and I had to check, good idea) it is a 1/2 x 31" and I was hoping it was wrong because it would have been a quick fix.
Anyhow I'll go ahead and mess with it to try to get it on but its pretty far off the mark. I'll take a cpl pics of it to show everyone just how " off " it really is and maybe someone can see something I dont.
Take care. Oh and BTW, nothing has happened from that one thing.....strange.
And my plug and wire are hanging there but not installed so to speak
Hold Fast.
P.S. Im very much into all things Navy and high seas but wasnt in like you was but if you are into that stuff you gotta see my fave movie " Master and Commander..the far side of the world".
They speak in old time early 1800's ship-talk and terms. And its a true story to.
Thats where I got the "Hold Fast" from lol!
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post #11 of 27 Old 09-29-2019, 01:31 PM Thread Starter
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Re: Fan pulley wont adjust down

OK I put everything back together as in small pulley or 'top ' and put the shroud on good and snug and for some reason it looks better than yesterday and I could do as Beaner said to slightly pull down on shroud and prolly get it to go on or take a tool and pry belt on top pulley but Im concerned about it all being to tight and wearing out the new bearings that was a nightmare to get on.
And also, yesterday the jam or cap nut that is on the outside of top pulley was all the way to the end of its threads of fan shaft pointing toward operator and I also had a fan blade actually hitting my cylinder to. The one blade was out of pitch w/the others so I bent it slightly in tune w/others but since putting it back together there is threads left where nut is and blades are not as close to cyl as they was so I guess I somehow adjusted the blades back toward the shroud and they are turning safe and not hitting anything today. Aint much room back there tween jug & shroud is there?
Anyhow I dont like that belt at all, Im certain the kevlar belts have their place but I want one more plyable and maybe a bit thinner.
Gotta change that so Im gonna stop here till I get a diff belt tomorrow.
Thanks all and Im still open for any and all suggestions and advice I can get on this one here.

And that ine contraption is what I use on that big nut on fan bracket, 1 1/2 socket lol
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post #12 of 27 Old 09-29-2019, 02:32 PM
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Re: Fan pulley wont adjust down

From those pix, it looks to me like you have the right size belt.

It's a lot easier to get it on if you loosen the two 1/2" nuts at the bottom of the shroud. That lets you tip the whole shroud back, reducing the span between the pulleys.

I would do that, tighten the shroud back up, then slide the fan assembly back up to tension the belt. If you don't have the special wrench for adjusting those big flat nuts, you can figure out how high the fan wants to go, mark it, then loosen the shroud again. That lets you get a crescent wrench or something onto the fan side to tighten the fan assembly into place. You'll still be able to get the belt over the pulleys and tighten the shroud back up.

If you do have the wrench, of course you don't need to do any of that horsing around, you can just tighten up the nut from the pulley side.

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post #13 of 27 Old 09-29-2019, 03:05 PM Thread Starter
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Re: Fan pulley wont adjust down

[QUOTE=jrd;12351267]From those pix, it looks to me like you have the right size belt.

It's a lot easier to get it on if you loosen the two 1/2" nuts at the bottom of the shroud. That lets you tip the whole shroud back, reducing the span between the pulleys.

Yea its a 1/2 x 31" belt but the two shroud nuts that hold the shroud on are a full 3/4" but the top pulley nut is 1/2" but on fan side its like a 7/16" I think but the small pulley on shroud is as far down as it can go in bearing slot where it all goes thru the shroud so aint no givin there I dont think.
At this point after I messed around with it a bit today I think about the main prob is that stupid Kevlar belt, its like a piece of metal or something.
What Im thinking now is I can prolly manage to get that belt on but it will be so tight if it doesnt stretch an inch at least pretty fast its gonna either mess up bearings or possibly even the fan/pulley shaft it all runs on.
OR...just get a new diff belt tomorrow when I go to work maybe 1" longer and hopefully not cause anything to mess itself up.
I walk on pins and needles with this thing anymore and I would much rather buy a belt or two than mess up fan bearings or shaft and have to tear that thing apart again and fix something. Im having a heck of a time putting it back together mainly because I cant find anything like small nuts and bolt s and such that I took off of it.
I mean its my fault for letting it go for so long I guess but I worked on it wen I could but small things sitting around for a cpl yrs can really seem to walk away or walk awhile and stop somewhere else lol !
I looked for 2 days to find those 2 bolts for the exhaust manifold. Friggin crazy.
Thanks jrd

(30 mins later) Man I was just thinking with the fan assy being all the way down on the shroud as it can go I will never be able to loosen-up any belt I get on this thing.
Thats a dilema for sure, so since I can never adjust to loosen I must get a slightly longer belt Im thinking.

Last edited by Gerrard; 09-29-2019 at 03:49 PM.
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post #14 of 27 Old 09-29-2019, 06:28 PM
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Re: Fan pulley wont adjust down

Quote:
Originally Posted by Gerrard View Post
I must get a slightly longer belt Im thinking.
Trust me. Try loosening the shroud so you can tip it back first. You'll be amazed how much easier it is to get the belt in the grooves like that.

I got some kevlar belts cheap once, they're on some of my machines. They are a little stiffer than the old styles one, but in my experience they work in just fine.

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post #15 of 27 Old 09-29-2019, 10:53 PM Thread Starter
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Re: Fan pulley wont adjust down

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Originally Posted by jrd View Post
Trust me. Try loosening the shroud so you can tip it back first. You'll be amazed how much easier it is to get the belt in the grooves like that.

I got some kevlar belts cheap once, they're on some of my machines. They are a little stiffer than the old styles one, but in my experience they work in just fine.
I'll give it a try but will it be real or possibly to tight ? I guess it just matters if it stretches or not after a few excerscises when its running.

Does the Kevlar belts stretch much at all? Hope they do a little.
Thanks jrd
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