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goatfarmer

Electric Clutch quandry

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goatfarmer

The tractor in question is a Broadmoor 12.5, about 1994 vintage. When I acquired the tractor, the 12.5 Vanguard had a rod through the block. So I installed a 14HP Vanguard. Runs great, no problems there.

But since installing this larger engine, the tractor goes through PTO clutches. I got about 5 years out of the original one. Every replacement has lasted maybe a year, some less. They seem to short out, and burn up, and lock up. The one on there now was installed last year in August. Wife was cutting grass last week, and the clutch locked up again.

At about $150.00 a piece, this is getting expensive, and annoying. Any thoughts?

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goatfarmer

clutch.JPG

This is the one I just pulled out. It was installed 5/13, so a little over a year ago. The bearing went this time. The one before, the windings burnt, and melted. There are 2 wires going to it, not sure if one is a ground.

clutch.JPG.cae9585ab84952f742eb272462982e98.JPG

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BLT

Ken I am assuming that this is your mower : http://bsintek.basco.com/BriggsDocumentDisplay/ifDzFO9buHZsF8Dxb6lEP5NRQpe.pdf and in it is a clutch adjustment . Have you done that?

Also you have a hex washer as shown in parts book? http://bsintek.basco.com/BriggsDocumentDisplay/heCBEN8apO2rE5Cwa5kbp796Dq.pdf ?

If it is a Warner here some service info. http://www.altraliterature.com/pdfs/819-0458_P-1097-6.pdf

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Chris727

I believe an old Simplicity dealer had told me that even when the bearings look fried its not that the bearing was the cause of the clutch failure, but rather the clutch failure caused the bearing to fail. The short causes the grease to burn up and the bearing to fail.

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goatfarmer

Yep, that's my tractor. Hex washer is in place. I tried the adjustment per this site.

http://www.altraliterature.com/pdfs/819-0458_P-1097-6.pdf

It makes sense that a short would "fry" the grease from the bearing. It seems it would ground through the engine, plus parts of it ride against the frame. Maybe a separate ground wire is in order.

We're talking to XTREME mower clutches as we speak.

https://xclutches.com/en/aboutus

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goatfarmer

Just got off the phone with an engineer from Xtreme. Very enlightening!

First, he said to make sure voltage is between 13.2, and 14V. No more than 14. Checked at the plug for the clutch.

Grounding, as mentioned here, was discussed.

Proper torque is important, I was just running the bolt tight.

Seems I have a few things to check.

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