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callwill

Belt help

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callwill
A 4L28 is way too loose, I cant get a 4L27 on the pulleys. The 4L comes right out to the pulley's edge, but doesn't seem to fit the inside correctly. I tried a 3L27 & it is almost the correct length & gets nearly tight enough when the PTO is engaged, but sets deep into both pulleys. Is there something in between these sizes that i should look for or do i need to upsize the pulley on the BGBox so a 4L28 will work?

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HubbardRA
Try using a larger idler on the PTO engagement. I did this on one of my tractors so that I could buy off-the-shelf belts for the mower, instead of ordering the special Simplicity belts. It has worked for me. Getting the correct Simplicity belt is always the best way to go.

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callwill
It is a 3112V but it looks like someone either put a different PTO on it or there may be incorrect size pulleys on the BGB or PTO (thay are the same size) I don't know for sure. It doesn't look like there is room for a larger Idler pulley, current one comes very close to PT0 pulley, but maybe...

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gregc
quote:
Originally posted by UCD
The 3100/B-100 series and 3200/B-200 series used different size PTO belts 3100/B-100 series #164146 = 34.1" type HA belt. 3200/B-200 series #157230 = 22.0" type 3/8
Maynard, you picked up the number for the hydraulic lift belt for the 3200/B-200 series tractors. The PTO belt is #157683 = 29.16" A belt.

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callwill
i streched the 4l27 on the pulleys and it drives the mower nicely, but it runs w/o engaging the PTO. I do expect it will stretch a little & we will see, but in the mean time can anyone tell me what diameter pulleys should be on the BGB & PTO for this tractor?

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callwill
4L27 is doing the job, has streched into the job though it still could stand to be a bit looser...I am sure the pulleys that are on the BGB & PTO are smaller than 5 inch...they are measured full outside diameter aren't they? And renegade...what size is your idler pulley on the 3112v PTO? Update: i measued my pulleys, both are 4 inch Diam(full outside D). The idler is @3.25 D. I'm sre that is my problem. I need the 5 inch pulleys...anyone? Does the vario BGB have a different size shaft for the pulleys than most?

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callwill
thanks Al. I figured that from my earliest analysis of the fit problems i was having, but i did need to get the lawn mowed so i went ahead & used the 4L 27 that was too tight & it will work a while longer. I am looking for something close to the correct size pulleys that will allow me to use a 4L belt as i have a good source of std belts close & the neares simp guy is a 40+ mile RT(as opposed to 5). Maybe 5inch pulleys for a 4L will be able to use a 4L 30 or 29, or narrower pulleys for a 3L 29 or 30.

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UCD
The correct Simplicity belt should last you a very long time. I have seen these with the original belt still being used 35 years later. Also it will be easier & cheaper than finding and buying the correct size aftermarket pulleys and belts.

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